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  • Graphical Error During Installation of Ubuntu 13.10 32bit

    - by user172353
    In trying to install the latest version of Ubuntu, I made a bootable USB and proceeded to give it a shot. As it loaded, the upper half of the screen displayed staticy, multi-colored horizontal lines, but continued to boot into the installer. The installer appeared to be functional using the keyboard, but I was unable to proceed as the graphical display was a mismatched mosaic of the proper screen with no visible cursor. I'll try to edit in a photo later. Attempting the exact same USB on a different device (an old Asus Eee 1005HA) gave no such error and installed without a hitch.

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  • Restore Your PC from Windows Home Server

    - by Mysticgeek
    If your computer crashes or you get a virus infection that makes it unrecoverable, doing a clean install can be a hassle, let alone getting your data back. If you’re backing up your computers to Windows Home Server, you can completely restore them to the last successful backup. Note: For this process to work you need to verify the PC you want to restore is connected to your network via Ethernet. If you have it connected wirelessly it won’t work. Restore a PC from Windows Home Server On the computer you want to restore, pop in the Windows Home Server Home Computer Restore disc and boot from it. If you don’t have one already made, you can easily make one following these instructions. We have also included the link to the restore disc below. Boot from the CD then select if your machine has 512MB or RAM or more. The disc will initialize… Then choose your language and keyboard settings. Hopefully if everything goes correctly, your network card will be detected and you can continue. However, if it doesn’t like in our example, click on the Show Details button. In the Detect Hardware screen click on the Install Drivers button. Now you will need to have a USB flash drive with the correct drivers on it. It has to be a flash drive or a floppy (if you happen to still have one of those) because you can’t take out the Restore CD. If you want to make sure you have the correct drivers on the USB flash drive, open the Windows Home Server Console on another computer on your network. In the Computers and Backup section right-click on the computer you want to restore and select View Backups. Select the backup you want to restore from and click the Open button in the Restore or view Files section. Now drag the entire contents of the folder named Windows Home Server Drivers for Restore to the USB flash drive. Back to the machine you’re trying to restore, insert the USB flash drive with the correct drivers and click the Scan button. Wait a few moments while the drivers are found then click Ok then Continue.   The Restore Computer Wizard starts up… Enter in your home server password and click Next. Select the computer you want to restore. If it isn’t selected by default you can pull it up from the dropdown list under Another Computer. Make certain you’re selecting the correct machine. Now select the backup you want to restore. In this example we only have one but chances are you’ll have several. If you have several backups to choose from, you might want to check out the details for them. Now you can select the disk from backup and and restore it to the destination volume. You might need to initialize a disk, change a drive letter, or other disk management tasks, if so, then click on Run Disk Manger. For example we want to change the destination drive letter to (C:).   After you’ve made all the changes to the destination disk you can continue with the restore process. If everything looks correct, confirm the restore configuration. If you need to make any changes at this point, you can still go back and make them. Now Windows Home Server will restore your drive. The amount of time it takes will vary depend on the amount of data you have to restore, network connection speed, and hardware. You are notified when the restore successfully completes. Click Finish and the PC will reboot and be restored and should be working correctly. All the updates, programs, and files will be back that were saved to the last successful backup. Anything you might have installed after that backup will be gone. If you have your computers set to backup every night, then hopefully it won’t be a big issue.   Conclusion Backing up the computers on your network to Windows Home Server is a valuable tool in your backup strategy. Sometimes you may only need to restore a couple files and we’ve covered how to restore them from backups on WHS and that works really well. If the unthinkable happens and you need to restore the entire computer, WHS makes that easy too.  Download Windows Home Server Home Computer Restore CD Similar Articles Productive Geek Tips Restore Files from Backups on Windows Home ServerCreate A Windows Home Server Home Computer Restore DiscGMedia Blog: Setting Up a Windows Home ServerShare Ubuntu Home Directories using SambaInstalling Windows Home Server TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Make your Joomla & Drupal Sites Mobile with OSMOBI Integrate Twitter and Delicious and Make Life Easier Design Your Web Pages Using the Golden Ratio Worldwide Growth of the Internet How to Find Your Mac Address Use My TextTools to Edit and Organize Text

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  • An increase to 3 Gig of RAM slows down Ubuntu 10.04 LTS

    - by williepabon
    I have Ubuntu 10.04 running from an external hard drive (installed on an enclosure) connected via USB port. Like a month or so ago, I increased RAM on my pc from 2 Gigs to 3 Gigs. This resulted on extremely long boot times and slow application loads. While I was understanding the nature of my problem, I posted various threads on this forum ( Questions # 188417, 188801), where I was advised to gather speed tests, and other info on my machine. I was also suggested that I might have problems with the RAM installed. Initially, I did not consider that possibility because: 1) I did a memory test with a diagnostic program from DELL (My pc is from Dell) 2) My pc works fine with Windows XP (the default OS), no problems with memory 3) My pc works fine when booting with Ubuntu 10.10 memory stick, no speed problems 4) My pc works fine when booting with Ubuntu 11.10 memory stick, no speed problems Anyway, I performed the memory tests suggested. But before doing it, and to check out any possibility of hardware issues on the hard drive, I did the following: (1) purchased a new hard drive enclosure and moved my hard drive to it, (2) purchased a new USB cable and used it to connect my hard drive/enclosure setup to a different USB port on my pc. Then, I performed speed tests with 1 Gig, 2 Gigs and 3 Gigs of RAM with my Ubuntu 10.04 OS. Ubuntu 10.04 worked well when booted with 1 Gig or 2 Gigs of RAM. When I increased to 3 Gigs, it slowed down to a crawl. I can't understand the relationship between an increase of 1 Gig and the effect it has in Ubuntu 10.04. This doesn't happen with Ubuntu 10.10 and 11.10. Unfortunately for me, Ubuntu 10.04 is my principal work operating system. So, I need a solution for this. Hardware and system information: DELL Precision 670 2 internal SATA Hard drives Audigy 2 ZS audio system Factory OS: Windows XP Professional SP3 NVidia 8400 GTS video card More info: williepabon@WP-WrkStation:~$ uname -a Linux WP-WrkStation 2.6.32-38-generic #83-Ubuntu SMP Wed Jan 4 11:13:04 UTC 2012 i686 GNU/Linux williepabon@WP-WrkStation:~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 10.04.4 LTS Release: 10.04 Codename: lucid Speed test with the 3 Gigs of RAM installed: williepabon@WP-WrkStation:~$ sudo hdparm -tT /dev/sdc [sudo] password for williepabon: /dev/sdc: Timing cached reads: 84 MB in 2.00 seconds = 41.96 MB/sec Timing buffered disk reads: 4 MB in 3.81 seconds = 1.05 MB/sec This is a very slow transfer rate from a hard drive. I will really appreciate a solution or a work around for this problem. I know that that there are users that have Ubuntu 10.04 with 3 Gigs or more of RAM and they don't have this problem. Same question asked on Launchpad for reference.

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  • Silverlight Cream for April 02, 2010 -- #828

    - by Dave Campbell
    In this Issue: Phil Middlemiss, Robert Kozak, Kathleen Dollard, Avi Pilosof, Nokola, Jeff Wilcox, David Anson, Timmy Kokke, Tim Greenfield, and Josh Smith. Shoutout: SmartyP has additional info up on his WP7 Pivot app: Preview of My Current Windows Phone 7 Pivot Work From SilverlightCream.com: A Chrome and Glass Theme - Part I Phil Middlemiss is starting a tutorial series on building a new theme for Silverlight, in this first one we define some gradients and color resources... good stuff Phil Intercepting INotifyPropertyChanged This is Robert Kozak's first post on this blog, but it's a good one about INotifyPropertyChanged and MVVM and has a solution in the post with lots of code and discussion. How do I Display Data of Complex Bound Criteria in Horizontal Lists in Silverlight? Kathleen Dollard's latest article in Visual Studio magazine is in answer to a question about displaying a list of complex bound criteria including data, child data, and photos, and displaying them horizontally one at a time. Very nice-looking result, and all the code. Windows Phone: Frame/Page navigation and transitions using the TransitioningContentControl Avi Pilosof discusses the built-in (boring) navigation on WP7, and then shows using the TransitionContentControl from the Toolkit to apply transitions to the navigation. EasyPainter: Cloud Turbulence and Particle Buzz Nokola returns with a couple more effects for EasyPainter: Cloud Turbulence and Particle Buzz ... check out the example screenshots, then go grab the code. Property change notifications for multithreaded Silverlight applications Jeff Wilcox is discussing the need for getting change notifications to always happen on the UI thread in multi-threaded apps... great diagrams to see what's going on. Tip: The default value of a DependencyProperty is shared by all instances of the class that registers it David Anson has a tip up about setting the default value of a DependencyProperty, and the consequence that may have depending upon the type. Building a “real” extension for Expression Blend Timmy Kokke's code is WPF, but the subject is near and dear to us all, Timmy has a real-world Expression Blend extension up... a search for controls in the Objects and Timelines pane ... and even if that doesn't interest you... it's the source to a Blend extension! XPath support in Silverlight 4 + XPathPad Tim Greenfield not only talks about XPath in SL4RC, but he has produced a tool, XPathPad, and provided the source... if you've used XPath, you either are a higher thinker than me(not a big stretch), or you need this :) Using a Service Locator to Work with MessageBoxes in an MVVM Application Josh Smith posted about a question that comes up a lot: showing a messagebox from a ViewModel object. This might not work for custom message boxes or unit testing. This post covers the Unit Testing aspect. Stay in the 'Light! Twitter SilverlightNews | Twitter WynApse | WynApse.com | Tagged Posts | SilverlightCream Join me @ SilverlightCream | Phoenix Silverlight User Group Technorati Tags: Silverlight    Silverlight 3    Silverlight 4    Windows Phone MIX10

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  • Edit ePub eBooks with Your Favorite HTML Editor

    - by Matthew Guay
    ePub eBooks are increasingly popular today, but often they’ve been made by converting other file formats. Here’s how you can edit ePub books to remove irregularities and make them better for reading on your devices. ePub’s are actually a zip file containing images, XHTML files with your text, and more with the .epub extension. You can make them better by editing the XHTML files directly.  Code gurus can edit the code directly, but even if you’ve never edited HTML, you can still quickly make changes with a WYSIWYG editor. Extract the Files from your ePub eBook As mentioned before, ePub files are actually renamed zip files.  So first let’s get all of the files in your ePub eBook accessible.  Find an eBook you want to edit and then change the file extension to .zip. If you don’t see the file extensions, click Organize in the menu bar and select Folder and search options. Select the View tab, and then uncheck the box beside Hide extensions for known file types.  Click Ok, and then change the file type as above. Windows will warn you about changing the file type; click Yes to proceed. Now you can browse the files of the ePub file.  Notice that it contains mostly HTML or XHTML files and images.  Click Extract all files to save them all in a folder so you can easily edit them. Alternately, you can open the ePub file directly in your favorite file archival program such as 7-zip.  Browse to the location of your ePub file, double-click it, and it’ll automatically open even if you don’t change the file extension to zip.  Now you can extract the folder, or extract individual files as before.   Edit Your eBook in KompoZer The actual ebook contents are stored in HTML or XHTML files.  These may be stored on the top folder of you ePub file’s directory, or they may be stored in \OEBPS\text in the file. To change the contents of your eBook, you’ll want to edit these files.  Often there may be separate files for each chapter, so you may have to use trial and error to find the one you need to edit.  You could edit them by hand in Windows using Notepad if you don’t have an HTML editor installed. A better option would be to use an HTML editor.  Here we’ll use the free KompoZer program to edit the files just like we’d edit a document in Word. Download KompoZer (link below), and unzip the files.  Then open the new folder and launch kompozer.exe; you don’t even need to install it.  In fact, you could even store KompoZer on a flash drive so you could edit HTML files from any computer. In KompoZer, open the HTML or XHTML file from your eBook that you want to edit. Now you can edit the file just like you would edit a document in Word.  Remove extra and unneeded text, make titles stand out, correct misspellings … anything you want!  This is especially helpful if your ePub file was created by converting a PDF as these often have many small errors. Or, if you’d rather edit the code itself, select the Source tab and edit as you wish. When you’re done making the changes, make sure to save the file in the same location with the same file name. Recreate Your Edited ePub eBook Once you’ve made all the changes you wanted, it’s time to turn this folder of files back into ePub.  Make sure you change the name of the folder if it still has the same name as the original ePub or zip file so you don’t mix them up or have trouble with overwriting the old files. Zip the folder using Windows Explorer or your favorite archival utility.  If you are using another archival program, make sure to compress it as a zip folder; other compression methods will render the ePub unreadable by your eReader app. Now change the file extension again, this time back to .epub. Now you can read your eBook with your changes in your favorite reader program or app on your mobile device. Conclusion Whether you need to remove an odd, misplaced character or need to do fine editing, using an HTML editor is a great way to make your ePub eBooks look just like you want.  Also, with an editor like KompoZer it’s not even difficult. Download KompoZer Similar Articles Productive Geek Tips Change the Default Editor From Nano on Ubuntu LinuxConvert a PDF eBook to ePub Format for Your iPad, iPhone, or eReaderRead Mobi eBooks on Kindle for PCEdit Your Firefox Bookmarks Easier with Flat Bookmark EditorChange the Default Editor for Batch Files in Vista TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips HippoRemote Pro 2.2 Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server XPS file format & XPS Viewer Explained Microsoft Office Web Apps Guide Know if Someone Accessed Your Facebook Account Shop for Music with Windows Media Player 12 Access Free Documentaries at BBC Documentaries Rent Cameras In Bulk At CameraRenter

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  • Testing Mobile Websites with Adobe Shadow

    - by dwahlin
    It’s no surprise that mobile development is all the rage these days. With all of the new mobile devices being released nearly every day the ability for developers to deliver mobile solutions is more important than ever. Nearly every developer or company I’ve talked to recently about mobile development in training classes, at conferences, and on consulting projects says that they need to find a solution to get existing websites into the mobile space. Although there are several different frameworks out there that can be used such as jQuery Mobile, Sencha Touch, jQTouch, and others, how do you test how your site renders on iOS, Android, Blackberry, Windows Phone, and the variety of mobile form factors out there? Although there are different virtual solutions that can be used including Electric Plum for iOS, emulators, browser plugins for resizing the laptop/desktop browser, and more, at some point you need to test on as many physical devices as possible. This can be extremely challenging and quite time consuming though especially when you consider that you have to manually enter URLs into devices and click links on each one to drill-down into sites. Adobe Labs just released a product called Adobe Shadow (thanks to Kurt Sprinzl for letting me know about it) that significantly simplifies testing sites on physical devices, debugging problems you find, and even making live modifications to HTML and CSS content while viewing a site on the device to see how rendering changes. You can view a page in your laptop/desktop browser and have it automatically pushed to all of your devices without actually touching the device (a huge time saver). See a problem with a device? Locate it using the free Chrome extension, pull up inspection tools (based on the Chrome Developer tools) and make live changes through Chrome that appear on the respective device so that it’s easy to identify how problems can be resolved. I’ve been using Adobe Shadow and am very impressed with the amount of time saved and the different features that it offers. In the rest of the post I’ll walk through how to get it installed, get it started, and use it to view and debug pages.   Getting Adobe Shadow Installed The following steps can be used to get Adobe Shadow installed: 1. Download and install Adobe Shadow on your laptop/desktop 2. Install the Adobe Shadow extension for Chrome 3. Install the Adobe Shadow app on all of your devices (you can find it in various app stores) 4. Connect your devices to Wifi. Make sure they’re on the same network that your laptop/desktop machine is on   Getting Adobe Shadow Started Once Adobe Shadow is installed, you’ll need to get it running on your laptop/desktop and on all your mobile devices. The following steps walk through that process: 1. Start the Adobe Shadow application on your laptop/desktop 2. Start the Adobe Shadow app on each of your mobile devices 3. Locate the laptop/desktop name in the list that’s shown on each mobile device: 4. Select the laptop/desktop name and a passcode will be shown: 5. Open the Adobe Shadow Chrome extension on the laptop/desktop and enter the passcode for the given device: Using Adobe Shadow to View and Modify Pages Once Adobe Shadow is up and running on your laptop/desktop and on all of your mobile devices you can navigate to a page in Chrome on the laptop/desktop and it will automatically be pushed out to all connected mobile devices. If you have 5 mobile devices setup they’ll all navigate to the page displayed in Chrome (pretty awesome!). This makes it super easy to see how a given page looks on your iPad, Android device, etc. without having to touch the device itself. If you find a problem with a page on a device you can select the device in the Chrome Adobe Shadow extension on your laptop/desktop and select the remote inspector icon (it’s the < > icon): This will pull up the Adobe Shadow remote debugging window which contains the standard Chrome Developer tool tabs such as Elements, Resources, Network, etc. Click on the Elements tab to see the HTML rendered for the target device and then drill into the respective HTML content, CSS styles, etc. As HTML elements are selected in the Adobe Shadow debugging tool they’ll be highlighted on the device itself just like they would if you were debugging a page directly in Chrome with the developer tools. Here’s an example from my Android device that shows how the page looks on the device as I select different HTML elements on the laptop/desktop: Conclusion I’m really impressed with what I’ve to this point from Adobe Shadow. Controlling pages that display on devices directly from my laptop/desktop is a big time saver and the ability to remotely see changes made through the Chrome Developer Tools (on my laptop/desktop) really pushes the tool over the top. If you’re developing mobile applications it’s definitely something to check out. It’s currently free to download and use. For additional details check out the video below:  

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  • Parallelism in .NET – Part 8, PLINQ’s ForAll Method

    - by Reed
    Parallel LINQ extends LINQ to Objects, and is typically very similar.  However, as I previously discussed, there are some differences.  Although the standard way to handle simple Data Parellelism is via Parallel.ForEach, it’s possible to do the same thing via PLINQ. PLINQ adds a new method unavailable in standard LINQ which provides new functionality… LINQ is designed to provide a much simpler way of handling querying, including filtering, ordering, grouping, and many other benefits.  Reading the description in LINQ to Objects on MSDN, it becomes clear that the thinking behind LINQ deals with retrieval of data.  LINQ works by adding a functional programming style on top of .NET, allowing us to express filters in terms of predicate functions, for example. PLINQ is, generally, very similar.  Typically, when using PLINQ, we write declarative statements to filter a dataset or perform an aggregation.  However, PLINQ adds one new method, which provides a very different purpose: ForAll. The ForAll method is defined on ParallelEnumerable, and will work upon any ParallelQuery<T>.  Unlike the sequence operators in LINQ and PLINQ, ForAll is intended to cause side effects.  It does not filter a collection, but rather invokes an action on each element of the collection. At first glance, this seems like a bad idea.  For example, Eric Lippert clearly explained two philosophical objections to providing an IEnumerable<T>.ForEach extension method, one of which still applies when parallelized.  The sole purpose of this method is to cause side effects, and as such, I agree that the ForAll method “violates the functional programming principles that all the other sequence operators are based upon”, in exactly the same manner an IEnumerable<T>.ForEach extension method would violate these principles.  Eric Lippert’s second reason for disliking a ForEach extension method does not necessarily apply to ForAll – replacing ForAll with a call to Parallel.ForEach has the same closure semantics, so there is no loss there. Although ForAll may have philosophical issues, there is a pragmatic reason to include this method.  Without ForAll, we would take a fairly serious performance hit in many situations.  Often, we need to perform some filtering or grouping, then perform an action using the results of our filter.  Using a standard foreach statement to perform our action would avoid this philosophical issue: // Filter our collection var filteredItems = collection.AsParallel().Where( i => i.SomePredicate() ); // Now perform an action foreach (var item in filteredItems) { // These will now run serially item.DoSomething(); } .csharpcode, .csharpcode pre { font-size: small; color: black; font-family: consolas, "Courier New", courier, monospace; background-color: #ffffff; /*white-space: pre;*/ } .csharpcode pre { margin: 0em; } .csharpcode .rem { color: #008000; } .csharpcode .kwrd { color: #0000ff; } .csharpcode .str { color: #006080; } .csharpcode .op { color: #0000c0; } .csharpcode .preproc { color: #cc6633; } .csharpcode .asp { background-color: #ffff00; } .csharpcode .html { color: #800000; } .csharpcode .attr { color: #ff0000; } .csharpcode .alt { background-color: #f4f4f4; width: 100%; margin: 0em; } .csharpcode .lnum { color: #606060; } This would cause a loss in performance, since we lose any parallelism in place, and cause all of our actions to be run serially. We could easily use a Parallel.ForEach instead, which adds parallelism to the actions: // Filter our collection var filteredItems = collection.AsParallel().Where( i => i.SomePredicate() ); // Now perform an action once the filter completes Parallel.ForEach(filteredItems, item => { // These will now run in parallel item.DoSomething(); }); This is a noticeable improvement, since both our filtering and our actions run parallelized.  However, there is still a large bottleneck in place here.  The problem lies with my comment “perform an action once the filter completes”.  Here, we’re parallelizing the filter, then collecting all of the results, blocking until the filter completes.  Once the filtering of every element is completed, we then repartition the results of the filter, reschedule into multiple threads, and perform the action on each element.  By moving this into two separate statements, we potentially double our parallelization overhead, since we’re forcing the work to be partitioned and scheduled twice as many times. This is where the pragmatism comes into play.  By violating our functional principles, we gain the ability to avoid the overhead and cost of rescheduling the work: // Perform an action on the results of our filter collection .AsParallel() .Where( i => i.SomePredicate() ) .ForAll( i => i.DoSomething() ); The ability to avoid the scheduling overhead is a compelling reason to use ForAll.  This really goes back to one of the key points I discussed in data parallelism: Partition your problem in a way to place the most work possible into each task.  Here, this means leaving the statement attached to the expression, even though it causes side effects and is not standard usage for LINQ. This leads to my one guideline for using ForAll: The ForAll extension method should only be used to process the results of a parallel query, as returned by a PLINQ expression. Any other usage scenario should use Parallel.ForEach, instead.

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  • ASP.NET MVC: Converting business objects to select list items

    - by DigiMortal
    Some of our business classes are used to fill dropdown boxes or select lists. And often you have some base class for all your business classes. In this posting I will show you how to use base business class to write extension method that converts collection of business objects to ASP.NET MVC select list items without writing a lot of code. BusinessBase, BaseEntity and other base classes I prefer to have some base class for all my business classes so I can easily use them regardless of their type in contexts I need. NB! Some guys say that it is good idea to have base class for all your business classes and they also suggest you to have mappings done same way in database. Other guys say that it is good to have base class but you don’t have to have one master table in database that contains identities of all your business objects. It is up to you how and what you prefer to do but whatever you do – think and analyze first, please. :) To keep things maximally simple I will use very primitive base class in this example. This class has only Id property and that’s it. public class BaseEntity {     public virtual long Id { get; set; } } Now we have Id in base class and we have one more question to solve – how to better visualize our business objects? To users ID is not enough, they want something more informative. We can define some abstract property that all classes must implement. But there is also another option we can use – overriding ToString() method in our business classes. public class Product : BaseEntity {     public virtual string SKU { get; set; }     public virtual string Name { get; set; }       public override string ToString()     {         if (string.IsNullOrEmpty(Name))             return base.ToString();           return Name;     } } Although you can add more functionality and properties to your base class we are at point where we have what we needed: identity and human readable presentation of business objects. Writing list items converter Now we can write method that creates list items for us. public static class BaseEntityExtensions {            public static IEnumerable<SelectListItem> ToSelectListItems<T>         (this IList<T> baseEntities) where T : BaseEntity     {         return ToSelectListItems((IEnumerator<BaseEntity>)                    baseEntities.GetEnumerator());     }       public static IEnumerable<SelectListItem> ToSelectListItems         (this IEnumerator<BaseEntity> baseEntities)     {         var items = new HashSet<SelectListItem>();           while (baseEntities.MoveNext())         {             var item = new SelectListItem();             var entity = baseEntities.Current;               item.Value = entity.Id.ToString();             item.Text = entity.ToString();               items.Add(item);         }           return items;     } } You can see here to overloads of same method. One works with List<T> and the other with IEnumerator<BaseEntity>. Although mostly my repositories return IList<T> when querying data there are always situations where I can use more abstract types and interfaces. Using extension methods in code In your code you can use ToSelectListItems() extension methods like shown on following code fragment. ... var model = new MyFormModel(); model.Statuses = _myRepository.ListStatuses().ToSelectListItems(); ... You can call this method on all your business classes that extend your base entity. Wanna have some fun with this code? Write overload for extension method that accepts selected item ID.

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  • How to connect two monitors to a macbook pro? [closed]

    - by CIRK
    I have a 13" macbook pro, and I need much more space right now, so I decided to buy two smaller monitors. (these from LG). But I don't really know how will I connect them. I've seen some products like this Diamond BVU195, but it's not currently in stores in my country. I've found these Equip 128450 USB 2.0 Display Adapter DELOCK USB 2.0 to DVI/VGA/HDMI Adapter The second one looks pretty cool, but it says that Windows is a system requirement or what, so I'm not sure if it will work with mac os x? So how did you connected multiple monitors to you mac, and are these adapters the best choices, if yes then is there an OS independent one?

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  • CodePlex Daily Summary for Sunday, December 19, 2010

    CodePlex Daily Summary for Sunday, December 19, 2010Popular ReleasesTeam Foundation Server Administration Tool: 2.1: TFS Administration Tool 2.1, is the first version of the TFS Administration Tool which is built on top of the Team Foundation Server 2010 object model. TFS Administration Tool 2.1 can be installed on machines that are running either Team Explorer 2010, or Team Foundation Server 2010.SQL Monitor: SQL Monitor 3.0 alpha 5: 1. fix a problem with not expanding nodes in object explorer, sorryHacker Passwords: HackerPasswords.zip: Source code, executable and documentationWatchersNET.SiteMap: WatchersNET.SiteMap 01.03.03: Whats NewSkin Object: You can now filter by Terms for Example use: <object id="dnnSITEMAPSL" codetype="dotnetnuke/server" codebase="SITEMAPSL"> <param name="TaxMode" value="terms" /> <param name="TaxTerms" value="TermName1,TermName2" /> </object> changes Tax Term Filter should work correct nowSubtitleTools: SubtitleTools 1.3: - Added .srt FileAssociation & Win7 ShowRecentCategory feature. - Applied UnifiedYeKe to fix Persian search problems. - Reduced file size of Persian subtitles for uploading @OSDB.EnhSim: EnhSim 2.2.3 ALPHA: 2.2.3 ALPHAThis release adds in the changes for 4.03a at level 85 To use this release, you must have the Microsoft Visual C++ 2010 Redistributable Package installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=A7B7A05E-6DE6-4D3A-A423-37BF0912DB84 To use the GUI you must have the .NET 4.0 Framework installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=9cfb2d51-5ff4-4491-b0e5-b386f32c0992 - Added in th...Facebook C# SDK: 4.1.0: - Lots of bug fixes - Removed Dynamic Runtime Language dependencies from non-dynamic platforms. - Samples included in release for ASP.NET, MVC, Silverlight, Windows Phone 7, WPF, WinForms, and one Visual Basic Sample - Changed internal serialization to use Json.net - BREAKING CHANGE: Canvas Session is no longer support. Use Signed Request instead. Canvas Session has been deprecated by Facebook. - BREAKING CHANGE: Some renames and changes with Authorizer, CanvasAuthorizer, and Authorization ac...NuGet (formerly NuPack): NuGet 1.0 build 11217.102: Note: this release is slightly newer than RC1, and fixes a couple issues relating to updating packages to newer versions. NuGet is a free, open source developer focused package management system for the .NET platform intent on simplifying the process of incorporating third party libraries into a .NET application during development. This release is a Visual Studio 2010 extension and contains the the Package Manager Console and the Add Package Dialog. This new build targets the newer feed (h...WCF Community Site: WCF Web APIs 10.12.17: Welcome to the second release of WCF Web APIs on codeplex Here is what is new in this release. WCF Support for jQuery - create WCF web services that are easy to consume from JavaScript clients, in particular jQuery. Better support for using JsonValue as dynamic Support for JsonValue change notification events for databinding and other purposes Support for going between JsonValue and CLR types WCF HTTP - create HTTP / REST based web services. This is a minor release which contains fixe...Orchard Project: Orchard 0.9: Orchard Release Notes Build: 0.9.253 Published: 12/16/2010 How to Install OrchardTo install the Orchard tech preview using Web PI, follow these instructions: http://www.orchardproject.net/docs/Installing-Orchard-Using-Web-PI.ashx Web PI will detect your hardware environment and install the application. --OR-- Alternatively, to install the release manually, download the Orchard.Web.0.9.253.zip file. The zip contents are pre-built and ready-to-run. Simply extract the contents of the Orch...Pyxis 2: Beta 2.2: An issue stopping the Checkbox from working properly has been resolved (gradient background has also been added) A TabDialog control has been added NumericUpDown control added A driver for the VS1053 has been added (not yet in use) PyxisAPI.OpenFile now works with all its features PyxisAPI.SaveFile now works with all features Settings window is now available from the Pyxis menu You can now connect using Static IP or DHCP You can now set your system time from the Settings windo...sgMotion Animation Library: sgMotion v1.3 for SunBurn 2.0.9 [Includes Sample]: sgMotion 1.3 release for use with SunBurn 2.0.9 (all editions). Includes example project with assets, and full Windows and Xbox support. (tested on all platforms)DotSpatial: DotSpatial 12-15-2010: This release contains a few minor bug fixes and hopefully the GDAL libraries for the 3.5 x86 build actually built to the correct directory this time.DotNetNuke® Community Edition: 05.06.01 Beta: This is the initial Beta of DotNetNuke 5.6.1. See the DotNetNuke Roadmap a full list of changes in this release.MSBuild Extension Pack: December 2010: Release Blog Post The MSBuild Extension Pack December 2010 release provides a collection of over 380 MSBuild tasks. A high level summary of what the tasks currently cover includes the following: System Items: Active Directory, Certificates, COM+, Console, Date and Time, Drives, Environment Variables, Event Logs, Files and Folders, FTP, GAC, Network, Performance Counters, Registry, Services, Sound Code: Assemblies, AsyncExec, CAB Files, Code Signing, DynamicExecute, File Detokenisation, GU...TweetSharp: TweetSharp v2.0.0.0 - Preview 5: Documentation for this release may be found at http://tweetsharp.codeplex.com/wikipage?title=UserGuide&referringTitle=Documentation. Note: This code is currently preview quality. Preview 5 ChangesMaintenance release with user reported fixes Preview 4 ChangesReintroduced fluent interface support via satellite assembly Added entities support, entity segmentation, and ITweetable/ITweeter interfaces for client development Numerous fixes reported by preview users Preview 3 ChangesNumerous ...Silverlight Contrib: Silverlight Contrib 2010.1.0: 2010.1.0 New FeaturesCompatibility Release for Silverlight 4 and Visual Studio 2010FlickrNet API Library: 3.1.4000: Newest release. Now contains dedicated Windows Phone 7 DLL as well as all previous DLLs. Also contains Windows Help file documentation now as standard.mojoPortal: 2.3.5.8: see release notes on mojoportal.com http://www.mojoportal.com/mojoportal-2358-released.aspx Note that we have separate deployment packages for .NET 3.5 and .NET 4.0 The deployment package downloads on this page are pre-compiled and ready for production deployment, they contain no C# source code. To download the source code see the Source Code Tab I recommend getting the latest source code using TortoiseHG, you can get the source code corresponding to this release here.Microsoft All-In-One Code Framework: Visual Studio 2010 Code Samples 2010-12-13: Code samples for Visual Studio 2010New ProjectsANLP - Another .NET Lexer Parser: This project aims to have a lexer/parser working in Silverlight and help people to write their own grammar and make the lexer/parser available in Silverlight.Better App Tab Shortcuts Firefox Extension: An extension for Firefox 4.0 which improves the shortcuts for selecting tabs.BizTalk Map Converter: Converts BizTalk Maps into ExcelCampo Minado: Campo minado em SilverlightCSharpHASH: Hash project is an college project conserning business software development. Written in C#.DS_HW1: hw1DynamicViewModel: MVVM using POCOs with .NET 4.0: This project aims to provide a way to implement the Model View ViewModel (MVVM) architectural pattern using Plain Old CLR Objects (POCOs) while taking full advantage of .NET 4.0 DynamicObject Class.Evolution Game: Evolution game that uses genetic algorithms to visualize life of different species.Fluent Parser: Fluent Parser is a library allowing to build a syntaxic analyser in C#. The grammar is built using only .NET objects into the form of a Parsing Expression Grammar (PEG).GoogleMusic Player: Choose and play music from newly launched google Music http://www.google.co.in/music create and save playlists Using C#Gracefully update SharePoint 2010 document metadata: Users want to update the metadata for a document in a document library, for which they don’t have access or if they wanted to update some read-only fields. Hacker Passwords: Hacker Passwords generator - free open sourceHTML5 Canvas FlowView: FlowView is a simple to use API for creating/implementing a flowview style element in HTML5/Canvas. The FlowView looks much like something from Apple's cover view.L#: A F# program to provide similar functionalities offered by Prolog for F# oriented applications.MapInfo Tools: Utilities for working with MapInfo files.Notepad X: Notepad X is an alternative open source text editor for Microsoft Windows, with a lot of customization options created to help users managing text documents, featuring tab navigation.OpenFlyClient: An educational open source of a client written in C# for FlyFF. This is for educational and evaluation purposes only. Using this for private servers is not allowed.Orkut API Library: Orkut API Library (more of a wrapper) for .NET makes it easier for .NET developers creating web and/or desktop applications to leverage Orkut OpenSocial API from within the familiar Visual Studio environment. PasteHtml.NET: PasteHtml.NET is a .NET API for using the PasteHtml.com service.Photon: Silverlight MVVM Framework RSATasync: Running analyses in RiskSpectrum PSA Professional software is a time-consuming task. RSATasync is a middleware, which uses .NET4 Parallel Extensions to parallelize analyses sent by the editor to the analyzer in the RiskSpectrum software.The Killie01 Project: all killie01 projects (opensource)United Nations News for Windows Phone 7: Open source project for United Nations News for Windows Phone 7. WCF SIP Stack: WCF SIPWordpress .NET: WPDotnet is a library to ease the Wordpress integration with ASP.NET. Some Server controls are implemented. If you don't want to use them, you can just use the classes.

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  • Add Firefox’s Awesome Bar Bookmark Search Function to Chrome and Iron

    - by Asian Angel
    Do you have a large number of bookmarks saved in your Chromium-based browser and need a quick way to search through them? Then see how easy it is to search through those bookmarks just like Firefox users do with the AwesomeBar extension. To engage the bookmark search function type “ab” in the Address Bar as seen above and press either Tab or the Space Bar. That will display the AwesomeBar prefix-bar as seen below. Enter the desired text to begin your search. For our example we decided to conduct a search for bookmarks related to the Ubuntu Twitter client Hotot. The results will continue to narrow down nicely as you type… Typing just a bit more finishes narrowing our search down the rest of the way for Hotot related items. Install the AwesomeBar Extension [Google Chrome Extensions] How to Enable Google Chrome’s Secret Gold IconHow to Create an Easy Pixel Art Avatar in Photoshop or GIMPInternet Explorer 9 Released: Here’s What You Need To Know

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  • How to use gps receiver bu-353

    - by Parimal
    Hi I have a gps receiver bu-353 with usb interface i want to know how can i use it under ubuntu I ran the following command gpsd -n -N -D 2 /dev/ttyUSB0 I got the output as: gpsd: launching (Version 2.94) gpsd: listening on port gpsd gpsd: running with effective group ID 1000 gpsd: running with effective user ID 1000 gpsd: opening GPS data source type 3 at '/dev/ttyUSB0' gpsd: speed 38400, 8N1 gpsd: Garmin: garmin_gps Linux USB module not active. gpsd: speed 9600, 8O1 gpsd: speed 38400, 8N1 gpsd: gpsd_activate(): opened GPS (fd 6) gpsd: speed 4800, 8N1 gpsd: NTPD ntpd_link_activate: 0 gpsd: /dev/ttyUSB0 identified as type SiRF binary (2.687608 sec @ 4800bps) gpsd: detaching 127.0.0.1 (sub 1, fd 8) in detach_client gpsd: detaching 127.0.0.1 (sub 1, fd 8) in detach_client after this i started tangoGPS, which said no gps and no gpsd found

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  • Manage Your Twitter Account from the Sidebar in Firefox

    - by Asian Angel
    Are you a Twitter addict and need an easy way to manage your account in Firefox? Now you can access Twitter in your Sidebar or as a separate window with the TwitKit+ extension for Firefox. Accessing TwitKit+ There are three ways that you can access TwitKit+ after installing the extension. The first is by adding the “Toolbar Button” to your browser’s UI. The second and third methods are through the “View & Tools Menus”.   TwitKit+ in Action When you open TwitKit+ for the first time you will see Twitter’s “Public Tweet Stream”. To get started login into your account. Note: If you do not care for the “brown theme” you can select a different one in “Preferences”. Here is a closer look at the top area and the commands available. Notice the “blue arrow symbol” in the upper left corner…very useful if you want to separate TwitKit+ from your main browser window for a bit. Secure Mode, Undock, Preferences, Login/Logout Google Search, Twitter Search, Copy Selection To Status Box, Shorten Selected URL Public, User, Friends, Followers, @ Messages, Direct Messages, Profile Note: To use Google or Twitter search enter your term in the “Status Area” and click on the appropriate service icon. Here is the regular timeline for our account…the “clickable tab buttons” make everything easy to view and work with. You can perform actions such as replying, retweeting, marking as a favorite, etc. using the set of “management buttons” at the bottom of each tweet. To add a new tweet to your timeline enter your text and press “Enter”. A look at the “Following List” for our account. Having a more defined and separate “view categories” set makes this better than directly accessing the Twitter website. Preferences The preferences can be quickly sorted out…choose how often the timeline is updated, name display, favorite URL shortening service, theme, and font size. Note: The default connection setting is for “Secure Access”. Conclusion TwitKit+ makes a nice addition to Firefox for anyone who loves keeping up with Twitter throughout the day. There when you want it and out of your way the rest of the time. Links Download the TwitKit+ extension (Mozilla Add-ons) Similar Articles Productive Geek Tips Move Add-on Management to the Sidebar in FirefoxPreview and Manage Multiple Tabs in Firefox with Tab SidebarDisable Windows Sidebar in VistaQuick Tip: Use Google Talk Sidebar in FirefoxRun Windows Sidebar Gadgets Without the Sidebar TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Enable Check Box Selection in Windows 7 OnlineOCR – Free OCR Service Betting on the Blind Side, a Vanity Fair article 30 Minimal Logo Designs that Say More with Less LEGO Digital Designer – Free Create a Personal Website Quickly using Flavors.me

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  • Manage Your Twitter Account from the Sidebar in Firefox

    - by Asian Angel
    Are you a Twitter addict and need an easy way to manage your account in Firefox? Now you can access Twitter in your Sidebar or as a separate window with the TwitKit+ extension for Firefox. Accessing TwitKit+ There are three ways that you can access TwitKit+ after installing the extension. The first is by adding the “Toolbar Button” to your browser’s UI. The second and third methods are through the “View & Tools Menus”.   TwitKit+ in Action When you open TwitKit+ for the first time you will see Twitter’s “Public Tweet Stream”. To get started login into your account. Note: If you do not care for the “brown theme” you can select a different one in “Preferences”. Here is a closer look at the top area and the commands available. Notice the “blue arrow symbol” in the upper left corner…very useful if you want to separate TwitKit+ from your main browser window for a bit. Secure Mode, Undock, Preferences, Login/Logout Google Search, Twitter Search, Copy Selection To Status Box, Shorten Selected URL Public, User, Friends, Followers, @ Messages, Direct Messages, Profile Note: To use Google or Twitter search enter your term in the “Status Area” and click on the appropriate service icon. Here is the regular timeline for our account…the “clickable tab buttons” make everything easy to view and work with. You can perform actions such as replying, retweeting, marking as a favorite, etc. using the set of “management buttons” at the bottom of each tweet. To add a new tweet to your timeline enter your text and press “Enter”. A look at the “Following List” for our account. Having a more defined and separate “view categories” set makes this better than directly accessing the Twitter website. Preferences The preferences can be quickly sorted out…choose how often the timeline is updated, name display, favorite URL shortening service, theme, and font size. Note: The default connection setting is for “Secure Access”. Conclusion TwitKit+ makes a nice addition to Firefox for anyone who loves keeping up with Twitter throughout the day. There when you want it and out of your way the rest of the time. Links Download the TwitKit+ extension (Mozilla Add-ons) Similar Articles Productive Geek Tips Move Add-on Management to the Sidebar in FirefoxPreview and Manage Multiple Tabs in Firefox with Tab SidebarDisable Windows Sidebar in VistaQuick Tip: Use Google Talk Sidebar in FirefoxRun Windows Sidebar Gadgets Without the Sidebar TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Enable Check Box Selection in Windows 7 OnlineOCR – Free OCR Service Betting on the Blind Side, a Vanity Fair article 30 Minimal Logo Designs that Say More with Less LEGO Digital Designer – Free Create a Personal Website Quickly using Flavors.me

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  • Favorite Visual Studio 2010 Extensions, Update

    - by Scott Dorman
    With the release of the Visual Studio Pro Power Tools (and many other new extensions having been released), my list of favorite Visual Studio extensions has changed. All of these extensions are available in the Visual Studio Gallery. Here is the list of extensions that I currently have installed and find useful: Bing Start Page CodeCompare Collapse Selection In Solution Explorer Collapse Solution Color Picker Completion Extension Analyzer Find Results Highlighter Find Results Tweak (Available from CodePlex) Format Document HelpViewerKeywordIndex HighlightMultiWord Image Insertion Indentation Matcher Extension ItalicComments MoveToRegionVSX Numbered Bookmarks PowerCommands for Visual Studio 2010 Regular Expressions Margin Search Work Items for TFS 2010 Source Outliner Spell Checker Structure Adornment This also installs the following extensions: BlockTagger BlockTaggerImpl SettingsStore SettingsStoreImpl StyleCop Team Founder Server Power Tools TFS Auto Shelve Visual Studio Color Theme Editor Visual Studio Pro Power Tools VS10x Code Map VS10x Code Marker VS10x Collapse All Projects VS10x Editor View Enhancer VS10x Insert Debug Names VS10x Selection Popup VS10x Super Copy Paste VSCommands 2010 Word Wrap with Auto-Indent   Technorati Tags: Visual Studio,Extensions

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  • Share Your Top 30 Visited Domains with Visitation Cloud for Firefox

    - by Asian Angel
    Curious about the domains that you visit most or perhaps you want a way to share that information on a social website? Now you can see and share the 30 most visited domains in your browser’s history with the Visitation Cloud extension. Accessing Visitation Cloud As soon as you install the extension you can get started using it. Depending on how your browser’s UI is set up there are three methods for accessing Visitation Cloud: a “Visitation Cloud Button” inserted at the end of your “Bookmarks Toolbar”, a menu listing in the “Tools Menu”, and a “Toolbar Button” (not shown here). Visitation Cloud in Action As soon as you activate Visitation Cloud a new window will appear with your top domains displayed in a cloud format. Keep in mind that this is more than just a static image…each listing is actually a clickable link. Clicking on any of the listings will open that domain in a new tab or window depending on your particular browser settings. If you feel that you have a great set of links and want to share it with your friends then that is easy to do. Right click anywhere within the Visitation Cloud Window and select “Save as…”. The “cloud image” can be saved in “.png, .jpg, or Scalable Vector Graphics (.svg)” format. For our example we chose the “.svg format”. Perhaps you love the set of links but not the layout…right click and select “Randomize” to change how the cloud looks. Here is our cloud after being “Randomized”. Things definitely got moved around… Accessing the Visitation Cloud Image in other Browsers Once you have your “cloud image” saved you can share it with friends or save it for your own future use in other browsers. Here is our “cloud image” open in Opera Browser with link opening in progress. The same “cloud image” open in Google Chrome. Very nice… Conclusion While this may not be something that everyone will use Visitation Cloud does make for a rather unique, interesting, & fun way to access and share your most visited domains. Links Download the Visitation Cloud extension (Mozilla Add-ons) Similar Articles Productive Geek Tips Fix "Security Error: Domain Name Mismatch" Warning in FirefoxAdd Variety to Your Searches with Search CloudletRestore Your Missing/Deleted Smart Bookmarks Folder in Firefox 3Blocking Spam from International Senders in Windows Vista MailSee Where a Package is Installed on Ubuntu TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 PCmover Professional Share High Res Photos using Divvyshot Draw Online using Harmony How to Browse Privately in Firefox Kill Processes Quickly with Process Assassin Need to Come Up with a Good Name? Try Wordoid StockFox puts a Lightweight Stock Ticker in your Statusbar

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  • How do I use with LTSP with a Dell FX170 thin client?

    - by v4169sgr
    Just got a reconditioned DELL Optiplex FX170 thin client delivered, without an image. On power-up, I see the message: DISK BOOT FAILURE, INSERT SYSTEM DISK AND PRESS ENTER I am very sure all the wires etc are connected properly. I would like it to PXE boot and find my LTSP installation. I have an HP T5525 with the same connectivity that works fine. On F12 there's a BIOS boot order menu. The only options available though are LS120, the HDD, CD / DVD [via USB presumably], and various USB options. I do not see 'PXE' or any network card. And I don't know how to change the boot order :( Any help appreciated!

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  • On VirtualBox Guest OS “Could not initialize GLX"

    - by trivelt
    I have a remote build-machine with Jenkins and I'm trying to run GUI application. In Jenkins I installed Xvnc plugin, which uses TightVNC Server, but each build has failed. Earlier, there was a problem with loading driver swrast (by libGL), currently in the log there is this line: [Error] Could not initialize GLX Remote desktop is Ubuntu 14.04 running over VirtualBox, so I installed VBoxAddons but it didn't resolve the problem. Below I'm putting some logs, maybe helpful for you. $ cat /var/log/Xorg.0.log | grep GL [ 20.545] (==) AIGLX enabled [ 20.545] Loading extension GLX [ 20.913] (EE) AIGLX error: vboxvideo does not export required DRI extension [ 20.914] (EE) AIGLX: reverting to software rendering [ 21.615] (II) AIGLX: Loaded and initialized swrast [ 21.615] (II) GLX: Initialized DRISWRAST GL provider for screen 0 $ lsmod | grep box vboxsf 43786 0 vboxpci 23194 0 vboxnetadp 25670 0 vboxnetflt 27613 0 vboxdrv 339502 3 vboxnetadp,vboxnetflt,vboxpci vboxvideo 12658 0 vboxguest 248441 3 vboxsf drm 302817 1 vboxvideo $ lspci | grep VGA 00:02.0 VGA compatible controller: InnoTek Systemberatung GmbH VirtualBox Graphics Adapter Any ideas what should I do?

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  • how to use gps receiver bu-353 in ubuntu 10.10

    - by Parimal
    Hi I have a gps receiver bu-353 with usb interface i want to know how can i use it under ubuntu I ran the following command gpsd -n -N -D 2 /dev/ttyUSB0 i got the output as: gpsd: launching (Version 2.94) gpsd: listening on port gpsd gpsd: running with effective group ID 1000 gpsd: running with effective user ID 1000 gpsd: opening GPS data source type 3 at '/dev/ttyUSB0' gpsd: speed 38400, 8N1 gpsd: Garmin: garmin_gps Linux USB module not active. gpsd: speed 9600, 8O1 gpsd: speed 38400, 8N1 gpsd: gpsd_activate(): opened GPS (fd 6) gpsd: speed 4800, 8N1 gpsd: NTPD ntpd_link_activate: 0 gpsd: /dev/ttyUSB0 identified as type SiRF binary (2.687608 sec @ 4800bps) gpsd: detaching 127.0.0.1 (sub 1, fd 8) in detach_client gpsd: detaching 127.0.0.1 (sub 1, fd 8) in detach_client after this i started tangoGPS, which said no gps and no gpsd found

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  • Digital Storage for Airline Entertainment

    - by Bill Evjen
    by Thomas Coughlin Common flash memory cards The most common flash memory products currently in use are SD cards and derivative products (e.g. mini and micro-SD cards) Some compact flash used for professional applications (such as DSLR cameras) Evolution of leading flash formats Standardization –> market expansion Market expansion –> volume iNAND –> focus is on enabling embedded X3 iSSD –> ideal for thin form factor devices Flash memory applications Phones are the #1 user of flash memory Flash memory is used as embedded and removable storage in many mobile applications Flash memory is being used in computers as USB sticks and SSDs Possible use of flash memory in computer combined with HDDs (hybrid HDDs and paired or dual storage computers) It can be a removable card or an embedded card These devices can only handle a specific number of writes Flash memory reads considerably quicker than hard drives Hybrid and dual storage in computers SSDs can provide fast performance but they are expensive HDDs can provide cheap storage but they are relatively slow Combining some flash memory with a HDD can provide costs close to those of HDDs and performance close to flash memory Seagate Momentus XT hybrid HDD Various dual storage offerings putting flash memory with HDDs Other common flash memory devices USB sticks All forms and colors Used for moving files around Some sold with content on them (Sony Movies on USB sticks) Solid State Drives (SSDs) Floating Gate Flash Memory Cell When a bit is programmed, electrons are stored upon the floating gate This has the effect of offsetting the charge on the control gate of the transistor If there is no charge upon the floating gate, then the control gate’s charge determines whether or not a current flows through the channel A strong charge on the control gate assumes that no current flows. A weak charge will allow a strong current to flow through. Similar to HDDs, flash memory must provide: Bit error correction Bad block management NAND and NOR memories are treated differently when it comes to managing wear In many NOR-based systems no management is used at all, since the NOR is simply used to store code, and data is stored in other devices. In this case, it would take a near-infinite amount of time for wear to become an issue since the only time the chip would see an erase/write cycle is when the code in the system is being upgraded, which rarely if ever happens over the life of a typical system. NAND is usually found in very different application than is NOR Flash memory wears out This is expected to get worse over time Retention: Disappearing data Bits fade away Retention decreases with increasing read/writes Bits may change when adjacent bits are read Time and traffic are concerns Controllers typically groom read disturb errors Like DRAM refresh Increases erase/write frequency Application characteristics Music – reads high / writes very low Video – r high / writes very low Internet Cache – r high / writes low On airplanes Many consumers now have their own content viewing devices – do they need the airlines? Is there a way to offer more to consumers, especially with their own viewers Additional special content tie into airplane network access to electrical power, internet Should there be fixed embedded or removable storage for on-board airline entertainment? Is there a way to leverage personal and airline viewers and content in new and entertaining ways?

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  • C#/.NET &ndash; Finding an Item&rsquo;s Index in IEnumerable&lt;T&gt;

    - by James Michael Hare
    Sorry for the long blogging hiatus.  First it was, of course, the holidays hustle and bustle, then my brother and his wife gave birth to their son, so I’ve been away from my blogging for two weeks. Background: Finding an item’s index in List<T> is easy… Many times in our day to day programming activities, we want to find the index of an item in a collection.  Now, if we have a List<T> and we’re looking for the item itself this is trivial: 1: // assume have a list of ints: 2: var list = new List<int> { 1, 13, 42, 64, 121, 77, 5, 99, 132 }; 3:  4: // can find the exact item using IndexOf() 5: var pos = list.IndexOf(64); This will return the position of the item if it’s found, or –1 if not.  It’s easy to see how this works for primitive types where equality is well defined.  For complex types, however, it will attempt to compare them using EqualityComparer<T>.Default which, in a nutshell, relies on the object’s Equals() method. So what if we want to search for a condition instead of equality?  That’s also easy in a List<T> with the FindIndex() method: 1: // assume have a list of ints: 2: var list = new List<int> { 1, 13, 42, 64, 121, 77, 5, 99, 132 }; 3:  4: // finds index of first even number or -1 if not found. 5: var pos = list.FindIndex(i => i % 2 == 0);   Problem: Finding an item’s index in IEnumerable<T> is not so easy... This is all well and good for lists, but what if we want to do the same thing for IEnumerable<T>?  A collection of IEnumerable<T> has no indexing, so there’s no direct method to find an item’s index.  LINQ, as powerful as it is, gives us many tools to get us this information, but not in one step.  As with almost any problem involving collections, there are several ways to accomplish the same goal.  And once again as with almost any problem involving collections, the choice of the solution somewhat depends on the situation. So let’s look at a few possible alternatives.  I’m going to express each of these as extension methods for simplicity and consistency. Solution: The TakeWhile() and Count() combo One of the things you can do is to perform a TakeWhile() on the list as long as your find condition is not true, and then do a Count() of the items it took.  The only downside to this method is that if the item is not in the list, the index will be the full Count() of items, and not –1.  So if you don’t know the size of the list beforehand, this can be confusing. 1: // a collection of extra extension methods off IEnumerable<T> 2: public static class EnumerableExtensions 3: { 4: // Finds an item in the collection, similar to List<T>.FindIndex() 5: public static int FindIndex<T>(this IEnumerable<T> list, Predicate<T> finder) 6: { 7: // note if item not found, result is length and not -1! 8: return list.TakeWhile(i => !finder(i)).Count(); 9: } 10: } Personally, I don’t like switching the paradigm of not found away from –1, so this is one of my least favorites.  Solution: Select with index Many people don’t realize that there is an alternative form of the LINQ Select() method that will provide you an index of the item being selected: 1: list.Select( (item,index) => do something here with the item and/or index... ) This can come in handy, but must be treated with care.  This is because the index provided is only as pertains to the result of previous operations (if any).  For example: 1: // assume have a list of ints: 2: var list = new List<int> { 1, 13, 42, 64, 121, 77, 5, 99, 132 }; 3:  4: // you'd hope this would give you the indexes of the even numbers 5: // which would be 2, 3, 8, but in reality it gives you 0, 1, 2 6: list.Where(item => item % 2 == 0).Select((item,index) => index); The reason the example gives you the collection { 0, 1, 2 } is because the where clause passes over any items that are odd, and therefore only the even items are given to the select and only they are given indexes. Conversely, we can’t select the index and then test the item in a Where() clause, because then the Where() clause would be operating on the index and not the item! So, what we have to do is to select the item and index and put them together in an anonymous type.  It looks ugly, but it works: 1: // extensions defined on IEnumerable<T> 2: public static class EnumerableExtensions 3: { 4: // finds an item in a collection, similar to List<T>.FindIndex() 5: public static int FindIndex<T>(this IEnumerable<T> list, Predicate<T> finder) 6: { 7: // if you don't name the anonymous properties they are the variable names 8: return list.Select((item, index) => new { item, index }) 9: .Where(p => finder(p.item)) 10: .Select(p => p.index + 1) 11: .FirstOrDefault() - 1; 12: } 13: }     So let’s look at this, because i know it’s convoluted: First Select() joins the items and their indexes into an anonymous type. Where() filters that list to only the ones matching the predicate. Second Select() picks the index of the matches and adds 1 – this is to distinguish between not found and first item. FirstOrDefault() returns the first item found from the previous clauses or default (zero) if not found. Subtract one so that not found (zero) will be –1, and first item (one) will be zero. The bad thing is, this is ugly as hell and creates anonymous objects for each item tested until it finds the match.  This concerns me a bit but we’ll defer judgment until compare the relative performances below. Solution: Convert ToList() and use FindIndex() This solution is easy enough.  We know any IEnumerable<T> can be converted to List<T> using the LINQ extension method ToList(), so we can easily convert the collection to a list and then just use the FindIndex() method baked into List<T>. 1: // a collection of extension methods for IEnumerable<T> 2: public static class EnumerableExtensions 3: { 4: // find the index of an item in the collection similar to List<T>.FindIndex() 5: public static int FindIndex<T>(this IEnumerable<T> list, Predicate<T> finder) 6: { 7: return list.ToList().FindIndex(finder); 8: } 9: } This solution is simplicity itself!  It is very concise and elegant and you need not worry about anyone misinterpreting what it’s trying to do (as opposed to the more convoluted LINQ methods above). But the main thing I’m concerned about here is the performance hit to allocate the List<T> in the ToList() call, but once again we’ll explore that in a second. Solution: Roll your own FindIndex() for IEnumerable<T> Of course, you can always roll your own FindIndex() method for IEnumerable<T>.  It would be a very simple for loop which scans for the item and counts as it goes.  There’s many ways to do this, but one such way might look like: 1: // extension methods for IEnumerable<T> 2: public static class EnumerableExtensions 3: { 4: // Finds an item matching a predicate in the enumeration, much like List<T>.FindIndex() 5: public static int FindIndex<T>(this IEnumerable<T> list, Predicate<T> finder) 6: { 7: int index = 0; 8: foreach (var item in list) 9: { 10: if (finder(item)) 11: { 12: return index; 13: } 14:  15: index++; 16: } 17:  18: return -1; 19: } 20: } Well, it’s not quite simplicity, and those less familiar with LINQ may prefer it since it doesn’t include all of the lambdas and behind the scenes iterators that come with deferred execution.  But does having this long, blown out method really gain us much in performance? Comparison of Proposed Solutions So we’ve now seen four solutions, let’s analyze their collective performance.  I took each of the four methods described above and run them over 100,000 iterations of lists of size 10, 100, 1000, and 10000 and here’s the performance results.  Then I looked for targets at the begining of the list (best case), middle of the list (the average case) and not in the list (worst case as must scan all of the list). Each of the times below is the average time in milliseconds for one execution as computer over the 100,000 iterations: Searches Matching First Item (Best Case)   10 100 1000 10000 TakeWhile 0.0003 0.0003 0.0003 0.0003 Select 0.0005 0.0005 0.0005 0.0005 ToList 0.0002 0.0003 0.0013 0.0121 Manual 0.0001 0.0001 0.0001 0.0001   Searches Matching Middle Item (Average Case)   10 100 1000 10000 TakeWhile 0.0004 0.0020 0.0191 0.1889 Select 0.0008 0.0042 0.0387 0.3802 ToList 0.0002 0.0007 0.0057 0.0562 Manual 0.0002 0.0013 0.0129 0.1255   Searches Where Not Found (Worst Case)   10 100 1000 10000 TakeWhile 0.0006 0.0039 0.0381 0.3770 Select 0.0012 0.0081 0.0758 0.7583 ToList 0.0002 0.0012 0.0100 0.0996 Manual 0.0003 0.0026 0.0253 0.2514   Notice something interesting here, you’d think the “roll your own” loop would be the most efficient, but it only wins when the item is first (or very close to it) regardless of list size.  In almost all other cases though and in particular the average case and worst case, the ToList()/FindIndex() combo wins for performance, even though it is creating some temporary memory to hold the List<T>.  If you examine the algorithm, the reason why is most likely because once it’s in a ToList() form, internally FindIndex() scans the internal array which is much more efficient to iterate over.  Thus, it takes a one time performance hit (not including any GC impact) to create the List<T> but after that the performance is much better. Summary If you’re concerned about too many throw-away objects, you can always roll your own FindIndex() method, but for sheer simplicity and overall performance, using the ToList()/FindIndex() combo performs best on nearly all list sizes in the average and worst cases.    Technorati Tags: C#,.NET,Litte Wonders,BlackRabbitCoder,Software,LINQ,List

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  • Announcing StorageTek VSM 6 and VLE Capacity Increase

    - by uwes
    Announcing Increased Capacity on StorageTek Virtual Storage Manager System 6 (VSM6) and StorageTek Virtual Library Extension (VLE)! StorageTek Virtual Storage Manager System 6 (VSM 6) and the StorageTek Virtual Library Extension (VLE) makes data management simple for the mainframe data center - Simple to deploy, simple to manage, and simple to scale.  With this announcement, StorageTek VSM 6 as well as StorageTek VLE capacity scaling increases by 33% for StorageTek VSM 6 and 21% for StorageTek VLE.  This significant capacity increase can provide increased consolidation potential for multiple VSM 4/5’s into a single VSM 6. In addition to the StorageTek VSM 6 and VLE capacity increases we are announcing End of Life (EOL) for previous generation StorageTek VSM 6 and VLE part numbers.   Please read the Sales Bulletin on Oracle HW TRC for more details. (If you are not registered on Oracle HW TRC, click here ... and follow the instructions..) For More Information Go To: Oracle.com Tape Page Oracle Technology Network Tape Page

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  • Add an Image Properties Listing to the Context Menu in Chrome and Iron

    - by Asian Angel
    Is the lack of an Image Properties listing in the Context Menu of your favorite Chromium-based browser driving you crazy? If you have been missing this extremely useful function, then the Image Properties Context Menu extension is here to save the day. As soon as you get the extension installed you can start enjoying access to image property information as seen here. Very nice! Image Properties Context Menu [via Shankar Ganesh (@shankargan)] Latest Features How-To Geek ETC How To Make Hundreds of Complex Photo Edits in Seconds With Photoshop Actions How to Enable User-Specific Wireless Networks in Windows 7 How to Use Google Chrome as Your Default PDF Reader (the Easy Way) How To Remove People and Objects From Photographs In Photoshop Ask How-To Geek: How Can I Monitor My Bandwidth Usage? Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Never Call Me at Work [Humorous Star Wars Video] Add an Image Properties Listing to the Context Menu in Chrome and Iron Add an Easy to View Notification Badge to Tabs in Firefox SpellBook Parks Bookmarklets in Chrome’s Context Menu Drag2Up Brings Multi-Source Drag and Drop Uploading to Firefox Enchanted Swing in the Forest Wallpaper

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  • Strategy for using snapshots to back up Ubuntu Linux server?

    - by MountainX
    I need some backup advice for my home file server. Here are the mount points, volume groups, logical volumes and used/total space of all the volumes on my Ubuntu 8.10 home file server. / vgA/lvRoot [7.5G/50G] /tmp vgB/lvTmp [195M/30G] /var vgB/lvVar [780M/30G] swap vgB/lvSwap [16.00 GB] /media1 vgC/lvMedia1 [400G/975G] /media2 vgC/lvMedia2 [75G/295G] /boot partition (no volume group) [95M/200M] /video partition (no volume group) [450G/950G] /backups vgD/lvBackupTarget [800G/925G] /home vgE/lvHome [85G/200G] I have just added a 2.0 TB external USB drive that I would like to use to backup everything. (It will be a close fit to get it all on one 2.0 TB drive. I actually have a 2nd external USB drive if needed.) I'd like to backup "/", var, /media1, media2 and /home. I'll deal with /boot and /video separately since they are not logical volumes. For all the logical volumes I'm anticipating taking snapshots and then copying those snapshots to the 2.0 TB external USB drive. I have never done a task like that before. If I do that, I could use the tutorial I found here: http://www.howtoforge.com/linux_lvm_snapshots My questions are: What is the best overall strategy? Is it LVM snapshots, as I'm assuming? How should I prepare, subdivide and mount the 2.0 TB external USB drive? 2.a. Should I create one or more regular partitions or should I create a physical volume with one or more logical volumes? 2.b. Would it be advisable to extactly mirror the source pv/lv layout on the external drive, and if so, is this a good strategy? What's the best way to get the snapshots onto the external drive? dd? Even though this is a strategy question, feedback with actual commands is appreciated. I need step-by-step cookbook-style help because I don't do much server admin work. (Background: This is a home file server that I have rarely had to touch in about 2 years. It has done its job without much intervention. The really old PC that I used to back everything up recently failed, so I'm replacing that with the external USB drive(s) and I'd like to upgrade my backup strategy at the same time. Previously, I just copied stuff from /backups over to the other computer and that would not have made things very easy in a real restore situation. The /backups mount point contains backup copies of "most" of the important data on a file by file basis, but it does not contain copies of /boot, etc. BTW, the actual internal HDD that holds /backups is separate from the other storage devices.) EDIT: I'll propose a strategy... The idea came from a comment here: LVM mirroring VS RAID1 "LVM mirrors are for replication of a logical volume to a different physical volume. It's essentially meant to "move the data to a different disk". The mirror is then broken..." That would fit my requirements well. Here is an ideal situation: establish the LV mirror on the external drive break the link with the mirror create a (persistent) snapshot on the mirror after a week, resync the mirror with the original source and update the mirror break the link and create another snapshot on the mirror. Obviously, the mirror will be like a weekly full backup. And the snapshots on the mirror will represent earlier points in time. If this would work and if it would be time efficient, it would give a nice full & differential type backup on the external drive based on LVM. I have not heard of a strategy like this before. Will it work? Could it be scripted? Thoughts? EDIT 2: Creating Portable DiskSafes With LoopbackFS And LVM Snapshots This article seems intriguing: http://www.howtoforge.com/creating-portable-disksafes-with-loopbackfs-and-lvm-snapshots Unfortunately, I don't understand exactly how to map those ideas to the strategy I'm proposing above. I'm going to ask this last bit as a separate question. I will leave my original question in place because I still desire feedback on the overall best strategy. At this moment I'm assuming it is LVM mirroring in the style of "Creating Portable DiskSafes with LVM Snapshots" but that might be wrong.

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