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  • How to see ALT text in Firefox

    - by torbengb
    I know Mozilla thinks it's a bug that IE shows ALT text even after the image has loaded; while users think it's a bug that Firefox doesn't work exactly like IE. This disagreement is irrelevant to my question: How can I make my Firefox show the ALT tooltip when I hover the mouse over an image? Obviously XKCD is a bit tame without this essential functionality. I've tried the Firefox plugin Popup ALT Attribute but it doesn't work; after restarting the browser and hovering over an image with an ALT text, no tooltip appears. I reproduced this on several computers with several (Windows) OS versions.

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  • Threads, Sockets, and Designing Low-Latency, High Concurrency Servers

    - by lazyconfabulator
    I've been thinking a lot lately about low-latency, high concurrency servers. Specifically, http servers. http servers (fast ones, anyway) can serve thousands of users simultaneously, with very little latency. So how do they do it? As near as I can tell, they all use events. Cherokee and Lighttpd use libevent. Nginx uses it's own event library performing much the same function of libevent, that is, picking a platform optimal strategy for polling events (like kqueue on *bsd, epoll on linux, /dev/poll on Solaris, etc). They all also seem to employ a strategy of multiprocess or multithread once the connection is made - using worker threads to handle the more cpu intensive tasks while another thread continues to listen and handle connections (via events). This is the extent of my understanding and ability to grok the thousand line sources of these applications. What I really want are finer details about how this all works. In examples of using events I've seen (and written) the events are handling both input and output. To this end, do the workers employ some sort of input/output queue to the event handling thread? Or are these worker threads handling their own input and output? I imagine a fixed amount of worker threads are spawned, and connections are lined up and served on demand, but how does the event thread feed these connections to the workers? I've read about FIFO queues and circular buffers, but I've yet to see any implementations to work from. Are there any? Do any use compare-and-swap instructions to avoid locking or is locking less detrimental to event polling than I think? Or have I misread the design entirely? Ultimately, I'd like to take enough away to improve some of my own event-driven network services. Bonus points to anyone providing solid implementation details (especially for stuff like low-latency queues) in C, as that's the language my network services are written in.

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  • Non-USB powered laptop cooling pad?

    - by Andrei Rinea
    On my laptop (el-cheapo but pretty good) I have all my 3 USB ports occupied by devices in use (external mouse, external keyboard, 3G internet/flash drive/external hard drive/etc). I want a cooling pad for my hard-worked laptop but all seem to be powered by USB... This laptop is mainly stationary. Either is available a solution to power the USB-powered cooling pad other than connecting it to the laptop... ... either is there a non-USB powered laptop cooling pad?

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  • WinXP keyboard input repeat rate problem

    - by Victor Sorokin
    I have problem similar to http://superuser.com/questions/33981/problems-with-kvm-switch-and-keyboard-repeat-rate-on-windows-xp: When I press and hold some key it's repeated random number of times, after that repeat stops and I need to release key and press it again to make repeat continue. If there's simultaneous sound playback and repeat is stopped, sound's stuck while I hold key with unpleasant drumming as if there's some audio problem. This issue is reproducible in WinXP Safe Mode. On the same config under Linux there's no issue. My config: List item PS/2 Logitech Keyboard USB Mouse MB M3A/H-HDMI WinXP Pro English SP2 with added Russian layout (WinXP loads via GRUB2) Realtek audio drivers for AC97 Thanks for your suggestions J

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  • Hot Link To A Specific Cell Comment In Excel 2007

    - by Optimal Solutions
    Is there a way to create a comment for cell D7 (for example) such that when the user hovers over it the comment has a hot link or hyperlink to cell A100? I dont know what else to call it other than a hot link or hyperlink, however its not like the hyperlink we know of in HTML. Or, maybe it could it be? The effect that is desired is that when the user sees that comment, he/she can click on the link to cell A100 if they choose to do so. I do not wish to create a macro or use VBA behind a button, etc.. It must be within the comment box itself. One of the issues I have run into is that once you move the mouse, the comment goes away. The comment might be able to be displayed all the time if it needs to be for this to work.

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  • Asus EeePC X101CH Touchpad issue

    - by ssvarc
    I have an Asus EeePC X101CH that the touchpad was uninstalled from (I saw the uninstall dialog boxes open). After a restart there was a PS/2 mouse under View Hidden Devices in Device Manager that wasn't installed properly (I'm assuming that this is the touchpad). Going to the Asus website and downloading the drivers (V15.3.27.1), I get the error message "Synaptics device not found!". I tried the other driver Version v9.1.7.7 for the Sentelic TouchPad as well (when run it appears to be the driver for the finger sensing) and got the error message "This driver version is inapplicable for the touch pad. Please check the devices on the system and install the suitable driver.". What's my next step? Thanks!

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  • Bulk "open with" change on OS X 10.6

    - by railmeat
    I use Microsoft remote desktop to connect from my mac to the windows machine I work on. I have a directory with about 50 different rdp files. (The config files for each machine). They go changed to open with the remote desktop in Windows XP on Parallels. Is there a command I can use to change all those back to opening with the remote desktop on my Mac? I can use the right mouse click "Always open with" command, or the equivalent on the "Get Info" menu, but I would like to find a way to make that change in bulk. "Change All..." button on the "Get Info" menu does not have any effect.

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  • Linux for a laptop? [closed]

    - by spriteless
    I would like to install Linux on a laptop. So I have emptied the hard drive, and can boot off a CD. So far I have failed to format the hard drive to Linux, to install Linux, and to change it so that I don't have to hit escape when loading in order to boot from CD (or get Linux on the hard drive and boot to it). The old laptop has 640 MB RAM, 600*800 screen, a CD drive and USB mouse and floppy drives. I eventually mean to use it to look at PDFs if possible, or RTFs that I converted from PDFs if not.

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  • How to change drag & drop behaviour in Windows 7's explorer?

    - by Pekka
    I have a new touch screen, and am playing around with its functionality. The most productive use for me is organizing files (literally) by hand. It's fun working through a list of files, dragging and dropping them to the right locations using your index finger. It feels better on the wrist than mouse-clicking, too. The only problem is that when I drag & drop files across drives in Windows 7, the default behaviour is to copy the file instead of moving it. I know I can influence this using right click, but that is of course no option in my situation. How can I change the default drag & drop behaviour in Windows 7's explorer?

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  • Where to put X11 drivers configuration in Ubuntu Lucid?

    - by vava
    Since hal is removed from Lucid, where now can I put all those little configuration tweaks for mouse and other input devices? In particular, I want to configure ThinkPad trackpad to enable scrolling with middle button. In hal, it was done with <match key="info.product" string="TPPS/2 IBM TrackPoint"> <merge key="input.x11_options.EmulateWheel" type="string">true</merge> <merge key="input.x11_options.EmulateWheelButton" type="string">2</merge> <merge key="input.x11_options.ZAxisMapping" type="string">4 5</merge> <merge key="input.x11_options.XAxisMapping" type="string">6 7</merge> <merge key="input.x11_options.Emulate3Buttons" type="string">true</merge> <merge key="input.x11_options.EmulateWheelTimeout" type="string">200</merge> </match>

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  • How to disable horizontal scrolling within virtualbox on Ubuntu guest, Windows 7 host?

    - by Steven Rosato
    I am using Windows 7 as Host, Ubuntu Karmic as guest OS with guest tools installed and I get an annoying glitch when switching from host to the guest machine: Vertical scrolling switches to horizontal! (using the mouse wheel). Since I don't really care about horizontal scrolling, how can I disable this? I have checked the web and the only thing I found was to play in the xorg.conf file and adding in the section "InputDevice" Option "ZAxisMapping" "4 5" which would enable vertical scrolling only. The thing is, I don't have that section in my config file so I guessed that I would need to add Section "InputDevice" Identifier "VBoxMouse" Driver "vboxmouse" Option "ZAxisMapping" "4 5" EndSection But that does not seem to work after restarting xserver. Any workaround for this?

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  • What is the best software for desktop recording?

    - by Ivo Flipse
    I know this question is partially a stub from: http://superuser.com/questions/201/free-desktop-recording-screencasting-on-windows However I would have to use this at work, so it doesn't have to be free, just work very well. Lended from the free post: I would expect such an application to have these features: choose the whole desktop, a region, a window to record zoom in an area, and camera move save the recorded movie to a compressed format have basic editing tools have the mouse highlighting feature highlight window/field on the screen, any trick will do display pressed keys/key combinations (like iphone does) So the question is: Which desktop recording/screencasting software would you recommend?

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  • after upgrade to outlook 2013 Contacts have the default picture in reading pane

    - by Juan Zamudio
    I'm using Windows 8 on a domain (using a domain account not a Microsoft account) connecting to Exchange, all my Contacts were outlook contacts with pictures and other data, I could see the picture of the contact in the reading pane and people pane while using Outlook 2010. After the upgrade to Outlook 2013 I can see my outlook contacts but it appears that they are unavailable in the reading pane because all i can see is the default picture (the default picture picture is also visible in the notifications). If I put the mouse over the name of the people while in the reading pane all I can see is the card with the default info (the only data is that the contact is available in the next 8 hours), if i compose a new message and hover the name of the contact i can see the card with all the data (picture, company, etc.). Is this the default behavior in Outlook 2013 if you are in a domain and not connected to any service or there is a way to show the picture of my contacts in every part of outlook?

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  • randomized quicksort: probability of two elements comparison?

    - by bantu
    I am reading "Probability and Computing" by M.Mitzenmacher, E.Upfal and I have problems understanding how the probability of comparison of two elements is calculated. Input: the list (y1,y2,...,YN) of numbers. We are looking for pivot element. Question: what is probability that two elements yi and yj (ji) will be compared? Answer (from book): yi and yj will be compared if either yi or yj will be selected as pivot in first draw from sequence (yi,yi+1,...,yj-1,yj). So the probablity is: 2/(y-i+1). The problem for me is initial claim: for example, picking up yi in the first draw from the whole list will cause the comparison with yj (and vice-versa) and the probability is 2/n. So, rather the "reverse" claim is true -- none of the (yi+1,...,yj-1) elements can be selected beforeyi or yj, but the "pool" size is not fixed (in first draw it is n for sure, but on the second it is smaller). Could someone please explain this, how the authors come up with such simplified conclusion? Thank you in advance

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  • Windows Live Mail doesn't respond to clicking Allow Sender

    - by Karel
    This is a problem that I experience for a couple of years now.. I'm having the latest version of Windows Live Mail. The overall behavior works just fine, but when I want to click 'Allow Sender' in the yellow bar above my e-mail, the text button does nothing. My mouse pointer turns into a finger hand, but the click event does nothing.. Sometimes with other e-mails, the button works and the yellow bar dissappears.. I have also experienced this in previous versions of Windows Live Mail.. Does anybody know what it could be..

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  • Why is VMware vSphere Client hanging at the console?

    - by David
    When I use the vSphere Client (against an ESXi 4.1 server) it hangs a lot. It's always at the same place - using the console on a VM. The console stops responding - and a lot of times, the management window stops responding as well. The operating system won't close the window (as the application isn't responding) and requires a force close. I've had the console refuse to give up the mouse, and have had the console freeze with the cursor in the top left (before any VM software starts, maybe?). The environment is this: the system is a Dell laptop running Ubuntu 10.10 (Maverick) fully updated with VirtualBox OSE running Windows XP (also fully updated). The vSphere Client is running in the Windows XP VM. Got all that? How do I keep these hangs from happening? It is very aggravating. I'm still trying just to get the VM loaded with Ubuntu Server...

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  • Getting a connection from a Sybase datasource in WAS 6.1 fails with message "User name property miss

    - by Abel Morelos
    I have a standalone application that needs to connect to a Sybase database via a datasource, I'm trying to connect using getConnection() and get the connection from this Sybase datasource which is hosted in WAS 6.1, sadly I'm getting an error JZ004 - Sybase(R) jConnect for JDBC(TM) Programmer's Reference: SQL Exception and Warning Messages JZ004 error message is: User name property missing in DriverManager.getConnection(..., Properties) Action: Provide the required user property. As you can see, this is not a connectivity (so we can discard JNDI or lookup problems), but rather a configuration problem. For my Sybase datasource in WAS 6.1 I have set up the proper authentication alias (Component-managed Authentication Alias), and I know the credentials are alright, "Test Connection" is successful for this datasource. Somebody had a similar problem and was because of the authentication alias- http://forum.springsource.org/showthread.php?t=39915 Next, I tried calling getConnection() but now I provided the credentials like getConnection(user, password)... and this time it worked!!! So I suspect that somehow WAS 6.1 is not picking or taking the authentication info I set in the datasource as mentioned before. If you think that maybe getConnection(user, password) should be OK for my case, well, that's not the case since I have a requirement to keep the credentials in the server, the standalone application only needs to know the JNDI information to lookup the datasource. Please let me know if have faced a similar problem, or what would you suggest me to do. Thanks.

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  • Which keyboard has better ergomics?

    - by Absolute0
    When I was a kid I fell hard on my right wrist and since then I always get wrist pains when angling my wrist very high up (ie: when using a very high shaped mouse or doing push ups). So I have narrowed down my choices for a keyboard to the following 2: Microsoft Natural 4000: And the Razer Arctosa: The Razer is a slim type keyboard similar to a laptop feel and the hand-rest would help with keeping my hands straight with respect to my forearms. I am more inclined on getting the razer but am not sure if this will benefit my wrists in the long run. Any thoughts on this would be greatly appreciated. Thanks.

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  • Making a non-trivial Image and Video Gallery with a really nice interface

    - by Cawas
    Short part: I'm starting to build an Image and Video Gallery for our intranet. It's pretty much like an image gallery with video thumbnails that play on click. It's just good to keep that in mind because caching and streaming happen in very different ways there. It will serve to browse our reference database, which will also contain searching, tagging and voting. There are 3 features that I need to begin with: Quick preview of thumbnails from each Gallery Fast zoom in / out Animated scrolling Now to the long part, since I can't seem to reduce this: I hope this question belongs here. Maybe people can read this through and identify with it, specially since I expect answers to be pretty specific. The first plan was getting Apple's mobile me gallery as base, because it just so happens to have all those 3 features. If you've never seem it, you should check it out. Move the mouse over each collection and you'll get a nice preview "per pixel". Carousel got a really good scrolling, not just because of the pretty effect. I like it much more than cooliris, but it would be nice to have it in several rows, maybe without the magnifying effect... Then it could be all in the same place with the zoom. The more the features blend-in together, the better. Zooming out with the mouse, scrolling by dragging, once the zoom is really out it becomes a browsing through galleries, with the quick-show preview of each, all properly cached and fast. That'd be perfect. A very compelling interface will be important in this project. Well, my point here is just describing what I need and hope to hear from people with more experience in all that stuff of what's already done and what I'd have to do myself. And how (i.e. which framework to use) to do it. To begin with, I've found a gallery demo and its source code (I think it was from here, but the link seems broken now). I guess it was made in SproutCore, which is what mobileme was based upon. Definitely with JQuery (which already seems a little slow). But I'm still missing two features there: the carousel and the fast zoom (it's just not as slow as the zoom in this demo with cappuccino). Then I've found a supposedly better one with a pretty good and similar zoom, that I'm not sure if it's using any framework and is already in php. Right now it'd be better having just the HTML, no server-side, since I'm building interface first. So, can anyone point directions? There are way too many options! Should I look for another solution closer to what I need, or try and tweak this one? I'm not familiar with any framework at all. Sorry for bringing this question that I will have to answer myself anyway sooner or later and sorry that I couldn't make this smaller. Thanks.

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  • How can I install an Apple Magic Trackpad on a PC without Boot Camp?

    - by rymo
    I have a Apple Magic Trackpad and I'd like to use it with my PC. I have no other Apple hardware besides the Trackpad. I do not have OSX and thus no Boot Camp CD. The Trackpad uses Bluetooth and will pair with Windows 7 without specific drivers (appears as an HID-Compliant Mouse), but all it will do is point and left click (physical click, no touch tap). With Apple's Windows driver update, I should be able to achieve: Tap to click Dragging Drag lock Secondary click Two-finger scrolling Two-finger secondary tap/click But how can I obtain this driver without Boot Camp installed? Apple's Boot Camp update EXE will not install on my PC (non-Apple hardware).

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  • Cheapest Embedded System with Wireless Connectivity?

    - by geeko
    Problem: I'm trying to capture some information coming from keyboard, mouse and barcode reader connected to some PC via PS/2, USB and/or RS-232, before information get to PC and send it over the Internet to some central server. I'm thinking to do so by using some kind of hardware interface (middleware, if you like) between PC and input devices. I thought this interface can be embedded PC, PDA or simply some mobile phone with wireless connectivity. PS/2 and RS-232 could be converted to USB using some USB convector/hub that connects to one of these interface systems. Then some special API programming take place to communicate between PC, input devices and wireless server, in the form of application running on the interface system. What's the cheapest solution that can achieve this? Or possibly any other solution?

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  • LDAP Query for OU's

    - by Stephen Murby
    Sorry for being an uber pain people, its all very new :( Already had alot of help on this, but don't seem to be able to see the problem, I am trying to populate a combo box with a list of all the current OU's, later to send each machine within that OU a shutdown command. (Acquiring AD OU list & Active Directory list OU's) were my previous Q's. string defaultNamingContext; //TODO 0 - Acquire and display the available OU's DirectoryEntry rootDSE = new DirectoryEntry("LDAP://RootDSE"); defaultNamingContext = rootDSE.Properties["defaultNamingContext"].Value.ToString(); DirectoryEntry entryToQuery = new DirectoryEntry ("LDAP://" + defaultNamingContext); MessageBox.Show(entryToQuery.Path.ToString()); DirectorySearcher ouSearch = new DirectorySearcher(entryToQuery.Path); ouSearch.Filter = "(objectCatergory=organizationalUnit)"; ouSearch.SearchScope = SearchScope.Subtree; ouSearch.PropertiesToLoad.Add("name"); SearchResultCollection allOUS = ouSearch.FindAll(); foreach (SearchResult oneResult in allOUS) { //comboBox1.Items.Add(oneResult.ToString()); comboBox1.Items.Add(oneResult.Properties["name"][0]); } I have been through and debugged everything i know, the searcher isn't picking up any results, hence why nothing is populated in the combo box.

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  • Keyboard not detected when trying to install Ubuntu 10.10

    - by A-ha
    I tried to install Ubuntu 10.10 desktop edition on my laptop and unfortunately it didn't detect my keyboard (it detects my mouse) so I couldn't finish installation. Is it something wrong I'm doing? There isn't really much to specify during the installation process and I'm really disappointed that such a trivial task as installation cannot be done without asking a question on a forum. Maybe it's because I'm trying to install it on my laptop? Shall I the download the notebook edition? That sound silly to me.

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  • Wake timers don't wake computer from sleep mode

    - by Joe
    I'm got a custom built PC running 64 bit Windows 7 Ultimate. So far everything works great except for one thing: it will not wake up from sleep mode for a wake timer or scheduled task. Sleep mode itself works great. If it's sleeping, it wakes successfully when I press the power button, mash the keyboard, wiggle the mouse, or send a WOL packet. The only problem is wake timers. I even tried the program WakeupOnStandBy but it looks like that uses wake timers, so it doesn't do anything for me either. And yes, wake timers are enabled: Any ideas on how to fix the problem, or troubleshoot it? I'd imagine that there would be a log somewhere telling me exactly why the wake timers are having trouble, but if there is I haven't found it.

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  • KVM switching on the cheap

    - by Stuart Hemming
    I have a machine at home for my personal use. I also have a machine for work. I have a pair of DVI monitors. An ideal set up for a KVM switch. Sadly the cheapest switch I can find that will switch 2 DVI monitors is nearly £300. However, I can get, for just £40, a switch for a single monitor. Is there any reason why I couldn't employ 2 of these much cheaper switches? My thought was to have the keyboard, mouse and one of the monitors in one switch and just the 2nd monitor in the 2nd switch. Logically, I can't think of a reason why this wouldn't work, but I have no real background to be able to say, definatively, whether or not it would. It it makes any difference, both machines are running Win7. Appreciate any thoughts. -- Stuart

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