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• Compaq Presario R3000 randomly fails to boot on 11.10, 12.04, 12.10

  - by dlfuller

  I’m trying to figure what to do with random failures to boot. My old HP Presario R3000 with AMD Athlon XP-M sometimes boots, sometimes hangs with a blank screen during boot, and sometimes hangs on shutdown. After a few boot attempts it will finally boot to the GNU GRUB screen where I usually can select Recovery Mode, then select return to a normal boot, and the thing will startup and function normally. The pattern is not repeatable and seemed to start after upgrading from 11.04. Clean installs of 12.04 and 12.10 on newly-formatted hard drives make no difference. If this might be a clue, hangs on shutdown often stop at a line with: “pcmcia_socket pcmcia_socket0: cs: IO port probe 0x3000-0x7fff: excluding 0x3000-0x30ff 0x3400-0x34ff 0x3800-0x38ff 0x3c00-0x3cff”. I did try the “acpi=off” modification from 11.10 randomly fails to boot on Compaq Presario R3000 with no change in these random boot failures. Any suggestions sure appreciated.

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• Grub rescue doesn't allow me to boot from LIVE CD/USB

  - by Thameem

  I used to have Windows Vista & Ubuntu 12.04 on dual boot. Accidentally, I deleted the Linux partition and landed on Grub rescue on the next boot. The tricky thing for me here is I have been trying to boot through LIVE CD/USB of the ubunutu version, other linux versions but in vain. What happens is, it appears as if it reads the CD/DVD drive or the USB flashes for a while when trying to boot through LIVE versions but the Grub rescue appears after a while. The only option I could think here is to remove the hard disk and connect to the other laptop I have through USB and reinstall a fresh OS. Please suggest me a way to boot through the DVD/USB again. My laptop is Sony VAIO CR32 series.Thanks.

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• How to Optimize Your Website For Search Engines - 3 Effective Tips

  It is always possible for you to come up with a good and effective websites to promote your product to different customers. The only hard thing is how to make the product reach the millions of people and thousands of visits every day. Promoting your product to different kinds of people is a hard task to make. It requires your time and the right strategy. You know it for a fact, that for your business to stay alive, you must target a maximum number of site visits and this is difficult especially for those who are just starting to learn the tricks and strategies.

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• 3D Location Handling

  - by tgrosinger

  I am thinking about making a simulator type game that will involve having lots of small objects in a 3D space. What is the typical solution for handling these objects? The first thing that comes to mind is a 3D Array, but I can't help but think there is a more efficient solution. Another idea that comes to mind is objects having possession of smaller items. For example a House possesses a Table which possesses a Cup and Bowl. The final way I can think of handling this is just having an array of "objects" that each have an x, y, z value. While this would make storing them easy I do not understand how you would detect collisions without just looking at every possible object and checking to see if it is in the way. Are there other ways of holding onto these objects that is more efficient?

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• Can a high FPS negatively affect how a program runs?

  - by rphello101

  Yeah I know this is a broad question and will get down rated, I'm just hoping for some answer before it gets closed. Anyway, I'm using Slick 2D/Java to play around with graphics. I'm having some trouble with trying to move an image. The weird thing is, the code works just fine on my laptop, but the image sporadically moves to (0,0) and stops on my desktop. The only difference between the two is that it says the FPS is about 500 on my laptop and 6600 on my desktop. Can that affect it or does someone have any ideas for what to check on?

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• Ubuntu 14.04 Fatal Exception

  - by user286534

  I use Ubuntu 14.04, 64-bit. I installed Virtualbox and was testing another Linux OS (Deepin). My system froze and I could not get to a TTY session to reboot. I had to do a hard restart and when Ubuntu restarted I got various error codes one of which was "kernel panic - fatal exception in interrupt" Booting to Advance mode and attempting repairs did not work (fsck, grub repair, etc) I reinstalled Ubuntu and chose the option to keep my files intact. I can now access my system but many programs I have installed do not work. My question is; I have a Deja-Dup backup (but only of my Home directory), is it better to restore my backup files or do I have to reinstall all of my programs? The weird thing is, the programs I verified using the Software Center to see if they were installed are checked as installed, but won't appear in Dash.

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• How to design an interface, where things need to be called in a specific sequence?

  - by Vorac

  The task is to configure a piece of hardware within the device, according to some input specification. This should be achieved as follows: 1) Collect the configuration information. This can happen at different times and places. For example, module A and module B can both request (at different times) some resources from my module. Those 'resources' are actually what the configuration is. 2) After it is clear that no more requests are going to be realized, a startup command, giving a summary of the requested resources, needs to be sent to the hardware. 3) Only after that, can (and must) detailed configuration of said resources be done. 4) Also, only after 2), can (and must) routing of selected resources to the declared callers be done. A common cause for bugs, even for me, who wrote the thing, is mistaking this order. What naming conventions, designs or mechanisms can I employ to make the interface usable by someone who sees the code for the first time?

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• SQL Live Monitor

  - by TiborKaraszi

  I just found this one out there and wanted to share it. It connects to an instance and show you a bunch of figures. Nothing you can't extract yourself with SQL queries, but sometimes it is just nice to have one tool which is very easy to use. Here's what it looks like when connecting to an instance with no load on it: As you can see, there are some hyperlinked pages as well, and there are also some interesting options (like logging to CSV or for PAL analysis) under the "Option" button. One more thing...(read more)

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• Advice on approaching a significant rearrangement/refactoring?

  - by Prog

  I'm working on an application (hobby project, solo programmer, small-medium size), and I have recently redesigned a significant part of it. The program already works in it's current state, but I decided to reimplement things to improve the OO design. I'm about to implement this new design by refactoring a big part of the application. Thing is I'm not sure where to start. Obviously, by the nature of a rearrangement, the moment you change one part of the program several other parts (at least temporarily) break. So it's a little 'scary' to rearrange something in a piece of software that already works. I'm asking for advice or some general guidelines: how should I approach a significant refactoring? When you approach rearranging large parts of your application, where do you start? Note that I'm interested only in re-arranging the high-level structure of the app. I have no intention of rewriting local algorithms.

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• .htaccess two different rules but only one per time

  - by dragon112

  I'm rather new to the whole .htaccess thing and I'm using the following right now to use 'pretty url's': <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ index.php?path=$1 [NS,L] </IfModule> Now i found my website a bit slow and decided to start gzipping my CSS files thru a php script I found somewhere on the web (the website). For this to work I need to rewrite the url to open the correct php file. That would look something like this: RewriteRule ^(.*).css$ /csszip.php?file=$1.css [L] But I only want the first to happen when the second doesn't and vice versa. In other words i'd like something like this: <IfModule mod_rewrite.c> RewriteEngine On if request doesn't contain .css do RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_FILENAME} !-f RewriteRule ^(.*)$ index.php?path=$1 [NS,L] else do RewriteRule ^(.*).css$ /csszip.php?file=$1.css [L] </IfModule> Can anyone help me with the proper code or a place where i can find a way to use some kind of conditional statement in htaccess files? Thanks in Advance!:)

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• I need to create an employee schedule/appointments program, but I don't know how to set it up

  - by robz228

  I work for a gym. I am the programmer, its just me, nobody else! Gets really frustrating when there's nobody to bounce conceptual ideas off of. I'm getting rid of our archaic paper binder systems for tracking appointments and what not. I've made a lot of things successfully already, now I'm trying to tackle the personal training department. What I want: Trainer information and work schedule Appointment booking that can be done by time slot with all available trainers for that time, or by trainer with all available hours for that trainer What I've tried so far: I started with an 'appointments' database, a 'trainers' database, and a 'schedules' database. This became so complicated trying to fit the schedule in that I scrapped it. Does anyone know know the best way to structure the tables for this and how to sort of make them communicate correctly? I don't need specific code, I just need help understand how to make this thing!

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• XNA + Windows Forms: How make them work together without making the trick of the custom GraphicsDeviceControl?

  - by Renann

  What I've found is a solution where you have to code a custom GraphicsDeviceControl to put inside the form (the well known tutorial from the APPHub), but that's not what I'm searching for. I would like to say that before start to right my question here, I "googled" a lot and I saw some questions here, but I couldn't find what I'm looking for. I would like to have the Draw/Update loops completly managed by XNAFrameWork (with XNA project and so), and not by a custom component. I hope you understand what I asked. Thanks in advance. Edit What's the most important thing for me and wasn't shown in the tutorial of APPHub is: where I have to put the input handling? That's one the problems that wasn't covered by the tutorial.

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• How can I refactor my code to use fewer singletons?

  - by fish

  I started a component based, networked game (so far only working on the server). I know why singletons can be bad, but I can't think of another way to implement the same thing. So far I have: A GameState singleton (for managing the global state of the game, i.e. pre-game, running, exiting). A World singleton, which is the root entity for my entity graph An EntityFactory A ComponentFactory I'm thinking about adding a "MessageDispatcher" so individual components can subscribe to network messages. The factories do not have state, so I suppose they aren't so bad. However, the others do have global state, which is asking for trouble. How can I refactor my code so it uses fewer singletons?

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• Multiple Google Analytics code for url under same domain

  - by will.i.am

  I have one domain, www.example.com, and www.example.com/sales. the analytic code on both urls are different. so when i login to google account, it will show two separate analytic accounts. on www.example.com/sales, i have a banner linked back to www.example.com. i clicked that banners, and i am sure there are other people have clicked the banner as well. but when i check the analytic of www.example.com, i don't see any thing come from my example.com/sales. I assume analytic on both urls are working, but why it doesn't track the visit from /sales. any idea??

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• Delete all traces of windows from Ubuntu

  - by TheOm3ga

  I used to have a dual boot in one of my hard disk drives - Ubuntu and Windows 7. Then, I added a SSD which is now my main hard disk drive, and I'm using it for Windows 7 completely, keeping Ubuntu in the old HD. I restored the Grub so everything works ok, except for one thing. Everytime I update the grub, it detects two windows: Found Windows 7 (loader) on /dev/sda1 Found Windows 7 (loader) on /dev/sdb1 Obviously, I don't want it to detect the Windows on sdb1. Because I no longer use it (I manually deleted the files). What can I do about that without wiping out completely the partition?

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• Adobe Flash Player Upgrade

  - by user211743

  I am running Lubuntu right now and I'm new to Linux. I went to youtube and it said I needed to upgrade Adobe Flash Player and litte window in the to left hand corner came up saying to install plugin needed so I pressed it and then it said no suitable plugins found. So then I Pressed download from Adobe and I just downloded the first thing which was Yum assuming thats the linux version of the plugin I needed. Then I opened the yum download and Archive Manager came up and now I don't know what to do. Help Please

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• Is there a batch processing framework that could be used for C++ applications?

  - by Benjamin

  In my team we develop several command-line C++ applications that work together; they're currently run by hand in separate windows, and after a while managing windows gets really confusing. I'm looking for a better way to manage the processing of these applications; ideally it would have a GUI with the ability to do the following: start applications in a specified order display application status close particular applications Is there anything available that does this type of thing or would we need to develop our own? Is there a better way than this?

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• Ubuntu 12.10 shows no launcher or menu

  - by Guy Wms

  I have 'upgraded' to Ubuntu 12.10 from a previous nice version that always worked. I have installed from a CD downloaded from this site. I start the PC (HP Pavillion zv5200) and arrive at a signon screen which has my username and "Guest". This screen shows the menu at the top with power, time, calendar, etc. So I enter my password and I am taken to a screen which only shows a wallpaper, nothing else. If I move the mouse and 'push' against the left limit I do not get a launcher app. Nothing. The only thing that works is opening a terminal (ctrl+alt+F1). I have tried several of the hot-key combinations I've read about on the site but none do anything, nothing happens. Can anyone help? Thanks very much!

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• Is it possible to run two VPN clients at the same time?

  - by Manuel Selva

  I would like to run two VPN clients at the same time: one Cisco client and one VPNC client. For now I have my VPNC client configured to route only some known IPs to the VNC interface and would like to add the same thing for the Cisco client at the same time. Is it possible ? Do I need a Cisco client to connect to a Cisco server or can I use an other client such as VPNc ? I installed the cisco one because it was the one suggested but I am wondering if this is mandatory ? I guess the answer may be yes, and off course I am interested in "required configurations" to do that

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• Making a physicalized melee weapon

  - by xuincherguixe

  The short version, is that I was asked to look into the feasibility of making a melee weapon, that one could swing at another object in the game, and have it interact physically. I completed the tutorial here http://www.mavrikgames.com/tutorials/melee-weapons, and proved that indeed it is. The thing is, that only for a brief period in the swing is the sword capable of knocking things around. I've looked through the editor and code for awhile now, and I'm still not sure how to do this. I was able to lengthen the amount of time it takes the animations run for, but not the length of time with which the sword can bash the barrel around.

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• 12.04 + Alienware M11x R2 + Bumblebee 3.0 = low resolution only

  - by user89171

  I had a fresh install of Ubuntu 12.04 on my Alienware M11x, and it worked with the native monitor resolution of 1366x768. In trying to get the Optimus chipset working, I installed Bumblebee 3.0. Now, I am only offered 640x480 for my monitor resolution. Graphically, Unity 3D appears to be working now, instead of the Unity 2D I had before, so something went right, but I don't know how I can get it to offer me any higher resolutions than 640x480. I've looked up many pages that address this topic, but nothing that I've seen suggested has worked. sudo add-apt-repository ppa:bumblebee/stable sudo apt-get update sudo apt-get install bumblebee-nvidia was the latest thing I tried. I've tried some variants of this, I've been sure to uninstall nvidia drivers prior to reinstalling Bumblebee and various video drivers. Does anyone have any clue as to how I can get back to native resolution?

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• PowerShell script to find files that are consuming the most disk space

  As you know, SQL Server databases and backup files can take up a lot of disk space. When disk is running low and you need to troubleshoot disk space issues, the first thing to do is to find large files that are consuming disk space. In this article I will show you a PowerShell script that you can use to find large files on your disks. 12 essential tools for database professionalsThe SQL Developer Bundle contains 12 tools designed with the SQL Server developer and DBA in mind. Try it now.

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• Spurious MachineToApplication Error With VS2010 Deployment

  Often when I'm building my MVC 2 application using Visual Studio 2010, I get the following error: It is an error to use a section registered as allowDefinition='MachineToApplication' beyond application level. This error can be caused by a virtual directory not being configured as an application in IIS. On the internet, this error seems to be related to having a nested web.config in your application. I do have such a thing, but it's just the one that came out of the MVC 2 project item template...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Site loads Extremely slowly over HTTPS; loads perfectly over HTTP - Sudden and new issue

  - by guest234239048

  My business' website suddenly started loading extremely slowly over HTTPS last night and continues through today. The facts: Page loadtime via HTTPS - 2 minutes +, HTTP - 3 seconds max. NO updates were done on any site files in the past 2 weeks. This is on Shared Hosting HTTPS has worked perfectly over the past 9 months then suddenly failed yesterday. Hosting company and SSL issuer say there are no problems on their end. - Searches for others having similar issues return no results, it appears to be just me... Site is primarily run via php/mysql Currently attempted troubleshooting: Tried all major browsers and different versions - same result. Tried 2 separate ISPs - same result. Tried proxies - same result. Tried 3 separate computers - same result. I'm basically at a total loss here. Does anyone know what could cause such a thing to happen? Please help guide troubleshooting.

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• Ubuntu 12.04 mdadm inactive

  - by user32274

  For a while now, my RAID 5 has ceased to work. Everytime I tried "madm --detail /dev/md127", its states all the drive and drive info, but that two of the drives have been removed. After some restarts, doing the same thing, i am getting /dev/md127 does not appear to be active. When I go into DiskUtil, I can see all 6 Hard Drives healthy and present, and i can see the Raid 5 at the bottom under Multi-disk Devices. However, the Raid says 0.0kb, and is not active. Please help and let me know how to proceed from here. I would really like to avoid rebuilding the RAID, especially because all 6 drives seem to be healthy and present. Thanks so much.

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