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• Monitor turns off about 1 second after turning it on

  - by r0ca

  Hi all! I have a hardware issue with some of the LCD monitors we have in our office. My problems is not related to video cards or anything else with the computer itself. I have 2 Dell 17" LCD screens that goes off (blank) after 1 or 2 seconds. The light remains green so it's not idling or sleeping. Just this morning, I had to replace one that goes off on 2 workstations and also on my laptop. Nothing to do with it. I tried the VGA and DVI connection w/out luck. I strongly think that this is something with a capacitor or something inside the screen but I can't figure out what it is... Is anybody heard of that kind of issue before? Regards, David.

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• Single device that can work as tablet and as desktop PC

  - by flow

  I have a macbook pro and an iPad 2. I tried to use iPad 2 for work when I am out of the office but this is not very comfortable since one has to sync documents, not all Os X Lion apps exist for iPad 2 and so on. I think a solution would be a single tablet device that at the office can be connected to some dock station and then I have the equivalent of my macbook, but when I am out of the office I can touch the screen and used the same applications while on the road. As far as I know the iPad 2 does not and will not allow this. Therefore I wonder if you could recommend me another hardware/tablet/etc that could work this way now as of March 2012.

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• xrander detect only one display

  - by cupakob

  Hi all, i have a problem, to get a picture on my tv over VGA (and also over S-Video to SCART). I've tried it first over xorg, but without success. After that i tried xrand, but xrander detect only my laptop display, here the output bufka [~] $ xrandr -q Screen 0: minimum 1680 x 1050, current 1680 x 1050, maximum 1680 x 1050 default connected 1680x1050+0+0 0mm x 0mm 1680x1050 50.0* 51.0 52.0 Any suggestions, how to solve the problem? My video card is Nvidia Geforce 8600M GT, TV is LG M227WPD and OS Ubuntu Lucid...

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• Arch Linux shows a blinking cursor instead of a booting installer

  - by fakedrake

  Arch Linux shows a blinking cursor instead of a booting installer. I ran sudo dd if=archlinux-2010.05-core-i686.iso of=/dev/sdb1 and checked the MD5 sums. I tried to boot it on two different PCs and got the same result: instead of booting GRUB — or anything useful, for that matter — it just showed a blinking cursor at the top left corner of the screen. The machines became unresponsive to any kind of input, the flash drive LED didn't seem to blink or shiver at all and there seemed to be no other activity whatsoever. I tried using another flash drive, but the machine completely ignored it, booting Windows "normally."

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• Windows XP not able to boot after loading isapnp.sys driver

  - by pragadheesh

  Hi When i power on my DELL Latitude E6400 laptop running on Windows XP SP3, i get a black screen and hangs after that. So I tried to boot through safe mode which hangs after loading the driver isapnp.sys. Doing a bit of googling i found out Windows XP not booting up including safe mode So I loaded my XP boot cd and tried Recovery Console. In the Recovery console, doing "dir" gives the error "an error occurred during directory enumeration". Then i tried chkdsk /p /r which gave "the volume appears to contain one or more unrecoverable problems" How can i fix these please. Thanks in advance.

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• How can I get ssh-agent working over ssh and in tmux (on OS X)?

  - by Rich

  I have a private key set up for my github account, the passphrase to which is, I believe, stored in OS X's keychain. I certainly don't have to type it in when I open a terminal window and enter ssh [email protected]. However, when I'm running bash over an ssh session, or locally inside a tmux session, I have to type in the passphrase every single time I attempt to ssh to github. This question suggests that a similar problem exists with screen, but I don't really understand the issue well enough to fix it in tmux. There's also this page which includes a fairly complicated solution, but for zsh. EDIT: In response to @Mikel's answer, from a local terminal I get the following output: [~] $ echo $SSH_AUTH_SOCK /tmp/launch-S4HBD6/Listeners [~] $ ssh-add -l 2048 [my key fingerprint] /Users/richie/.ssh/id_rsa (RSA) [~] $ typeset -p SSH_AUTH_SOCK declare -x SSH_AUTH_SOCK="/tmp/launch-S4HBD6/Listeners" Whereas over ssh or in tmux I get: [~] $ echo $SSH_AUTH_SOCK [~] $ ssh-add -l Could not open a connection to your authentication agent. [~] $ typeset -p SSH_AUTH_SOCK bash: typeset: SSH_AUTH_SOCK: not found echo $SSH_AGENT_PID returns nothing whatever shell I run it from.

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• Computers "applying computer settings" for a long time on start-up...why?

  - by tombull89

  Hello. Might be a bit of a slong shot but I'm stumped, along with the ICT Manager for the school I'm working it. In one of the IT rooms when you switch a computer on it will boot through BIOS fine, but when it gets to "applying computer settings" it can hang for a long time (~15 minutes). If you unplug the computer from the network it starts up fine, gets to the login screen, then you can plug the network cable in and it will work fine. I don't think it's anything to do with the fact we've been coming close to running out of IP addresses or a problem with our DHCP. Microsoft KB says apply the latest service pack, which we've done, and check a service. Servers and domian controllers are S2003, Computers and Desktops are XP. Does anybody have any thoughts on what to try?

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• Botting from a stick drive

  - by Zap

  Am trying to boot from a usb stick. Have carefully followed the instructions at the following link and successfully downloaded and installed version Ubuntu 12.04 desk top: http://www.ubuntu.com/download/help/create-a-usb-stick-on-windows I used the Universal-USB-Installer-1.9.0.2 as instructed and choose the "Ubuntu 12.04 desk top" option, after downloading the respective iso/zip file onto my Dell laptop from the Ubuntu site. Also modified my bios to select the usb first as boot drive instead of hard drive. Also, turned off bit blocker on my laptop and usb stick. Usb stick has the setting of "Automatically unlock this drive on this computer". When i reboot my laptop, it first boots into a black screen (i assume is the bios), but prompts saying "Remove disks or other media. Press any key to start". I press any key and regardless the laptop boots up to windows. Hence, it appears that the boot process is checking the USB first before going to the hard drive to look for it's boot disk and starting Windows 7. Is it that the USB stick is not correctly configured with Ubuntu as a boot disk? Is there anything else that i need to do besides the instructions at the following link? http://www.ubuntu.com/download/help/create-a-usb-stick-on-windows How can I ensure that USB boot stick is configured correctly? After running the Universal-USB-Installer-1.9.0.2 to "install" Ubuntu, is there additional configuration/installation steps? What is the first file that the bios would look for on this USB drive? Is this configured somewhere in the bios, or would it just look for an grub file or /boot dir? The only message i get when booting is "Remove disks or other media. Press any key to start". Any and all help would be much appreciated.. Thanks ... :)

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• How to add a Mac to Windows Active Directory

  - by Ben Daniel

  I've gone into the Directory Utility on the mac, clicked on the services tab, entered the Active Directory Domain and Computer ID, clicked the Bind button and it showed a little status label which flickered through 5 of 5 steps and then said "An unknown error occurred". If I ignore the error and just click the OK button further down the screen and make sure the Active Directory service is ticked in the list of services, then go to the Directory Servers tab and try to add an Active Directory by entering my ad domain, computer id, admin username and password I get an error "Unable to add the domain. An unexpected error of type -14090 (eDSAuthFailed) occurred." Any ideas?

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• Word document has very strange "hidden" formating after converting from PDF to .docx

  - by Celeritas

  I have a PDF document with my resume which I need to edit. I used this service to convert it to doc. I opened it in Word 2010 and saved it as .docx. There are some bizzare problems where there's empty space and if you try to delete it text gets shifted into vertical columns. How can I fix this? I'm afraid this document has a lot of private information and I can't just fill in dummy text, then the formatting gets even more messed up :/ Otherwise I'd post screen shots.

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• Dropped Dell XPS has hard-drive trouble

  - by Alex B.

  Yesterday, my mom dropped her laptop to the floor and got the blue screen of death after trying to boot the system. I was able to start a Fedora live CD and get some of her stuff off the hard drive, but I cannot seem to be able to install Windows on it. The installation starts loading files and then the computer turns off. I am thinking that she might need a new hard drive. Any ideas? Edit: I actually was able to boot the Windows XP installation but it is saying that no hard disk is detected. How can this be possible if I was able to mount the drive on fedora yesterday?

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• ProFTPd not in boot: Debian

  - by 50ndr33

  I just configured my new VPS with Apache, PHP, MySQL and ProFTPd. I wanted to install a smtp server, but I was advised to do a apt-get upgrade first. I did this, and I got up a blue screen where I could choose between two alternatives. It said something about GRUB 2 installer. I chose the alternative that was already selected, the topmost. I chose not to update the GRUB2, and use the old one that was installed. Now, ProFTPd doesn't start in boot anymore. I have to /etc/init.d/proftpd start every time. How do I fix this? Should I have chosen to update GRUB2? Should I do apt-get upgrade again and try to do the same GRUB2 installer again?

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• How do I adjust the actual font sizes in Internet Explorer?

  - by Cyberherbalist

  I like having as much stuff on the screen at once as I can. But as a consequence of getting on in years, small font sizes are starting to become a problem. Internet Explorer has the ability to increase the font size of text in webpages (those pages that don't set the font size explicitly). On the main menu, it is View | Text Size. The choices are: Smallest, Smaller, Medium, Larger, Largest. Medium is on many web pages just a tad too small to me. But if I go to Larger the font size is way too big. My question is, is there a way to set these text size jumps differently from what they seem to be?

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• Boolean checks with a single quadtree, or multiple quadtrees?

  - by Djentleman

  I'm currently developing a 2D sidescrolling shooter game for PC (think metroidvania but with a lot more happening at once). Using XNA. I'm utilising quadtrees for my spatial partitioning system. All objects will be encompassed by standard bounding geometry (box or sphere) with possible pixel-perfect collision detection implemented after geometry collision (depends on how optimised I can get it). These are my collision scenarios, with < representing object overlap (multiplayer co-op is the reason for the player<player scenario): Collision scenarios (true = collision occurs): Player <> Player = false Enemy <> Enemy = false Player <> Enemy = true PlayerBullet <> Enemy = true PlayerBullet <> Player = false PlayerBullet <> EnemyBullet = true PlayerBullet <> PlayerBullet = false EnemyBullet <> Player = true EnemyBullet <> Enemy = false EnemyBullet <> EnemyBullet = false Player <> Environment = true Enemy <> Environment = true PlayerBullet <> Environment = true EnemyBullet <> Environment = true Going off this information and the fact that were will likely be several hundred objects rendering on-screen at any given time, my question is as follows: Which method is likely to be the most efficient/optimised and why: Using a single quadtree with boolean checks for collision between the different types of objects. Using three quadtrees at once (player, enemy, environment), only testing the player and enemy trees against each other while testing both the player and enemy trees against the environment tree.

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• Testing of visualization projects

  - by paxRoman

  We develop small to large visualization projects for different tasks and industries and sometimes while rewriting them a couple of times in the process we hit walls because we discover that we need to add a lot of code to support new requirements. Now we have established a design process that seems to work well (at least we reduced the development time for each new project quite a bit), but we're still left scratching our heads around this question: what exactly should we test when testing visualizations? If everything that we want to explore is on the screen (bounded visualizations)? If the data is ok - if data is valid (that's one of the nice things about visualizations you can spot errors in your datasets)? Usability? User interaction? Code quality? I can tell you for sure that a simple check of the code quality is certainly not enough! Is there a classic paper / book about how to test visualizations? Also do you happen to know about classic design patterns for visualizations (except the obvious ones like Pub-Sub)?

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• Install wireless router with cable modem - need authentication server?

  - by Paul

  I've bought a wireless router which I'm installing with a Telstra BigPond cable modem for a friend. As part of the setup I've got to a screen requesting username / password / authentication server for the cable modem They have contacted Telstra who supply the username / password and say that is all they need. They dont know anything about an authentication server. There are a couple of answers up on Whirlpool forum found through google but those answers are 4 years old. http://forums.whirlpool.net.au/forum-replies-archive.cfm/475258.html http://forums.whirlpool.net.au/forum-replies-archive.cfm/479615.html I havent tried them yet as I hoped to get actual answers before trundling over to my friends house again. Can anyone suggest, How to get information from Telstra support? (I realise this question maybe impossible to answer) What is the authentication server for Telstra BigPond for a user in Sydney Australia Are those whirlpool forum answers still valid? I guess if I dont get anything more here I'll try what it says on whirlpool and see what happens.

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• Creepy MySQL error during hard work

  - by Kiewic

  Hi, I have a MySQL database installed on a OpenSuse 11.1 server (it is a Bitnami image). The database works fine, it can stay many days without any error, but when MySQL receives a huge amount of transactions, it dies immediately. The next screen shows the error: Moreover, I don't know how to restart MySQL. I have tried this: /opt/bitnami/mysql/bin/mysqld start But it doesn't work, that gives me the next output: 110209 17:09:01 [ERROR] Fatal error: Please read "Security" section of the manual to find out how to run mysqld as root! 110209 17:09:01 [ERROR] Aborting 110209 17:09:01 [Note] /opt/bitnami/mysql/bin/mysqld.bin: Shutdown complete It doesn't matter which kind of statements are executing, if they are a huge amount, MySQL dies. The MySQL server version is 5.1.30 What can be causing these sudden failures?

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• Calc direction vector based on destination vector and distance from enemy in AS3

  - by Phil

  I'm working on a zombie game in AS3 where I want a character to be able to move away from a zombie depending upon how close the zombie is. The character also has a destination that it's trying to get too on the screen. Ok so I have 2 vectors, one pointing to my destination, and one pointing to the zombie which I then invert to get my "away" vector. I then turn the distance between my character and the zombie into a value between 0 and 1. And then I'm stuck on how to get a resultant vector for my character. How would I use my 0-1 value to calculate how much of the away vector is used and how much of the original destination vector is still left if that makes sense? to end up with 1 direction vector to move my character? So if the zombie is right where my character is, then my direction vector = away vector, and if I'm far away from the zombie than my direction vector = destination vector, but how do I calculate the in-between? Ideally need the answer in AS3.

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• New entries on the GRUB

  - by Kiewic

  Hello. I updated my Ubuntu, and after that there were two new lines on my GRUB screen. Ubuntu 9.04, kernel 2.6.28-16-generic Ubuntu 9.04, kernel 2.6.28-16-generic (recovery mode) Ubuntu 9.04, kernel 2.6.28-11-generic Ubuntu 9.04, kernel 2.6.28-11-generic (recovey mode) Ubuntu 9.04, memtest86+ Other operating systems: Microsoft Windows XP Home Edition Do I have two kernels installed? Do the old entries are still useful? Each kernel takes up space? :P And that's not all, when a get into the old version of Ubuntu, the wireless card stops working on any Ubuntu version until I get into Windows and then go back to Ubuntu. Thanks for your help.

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• Reboot loop after Windows XP Service Pack 3 update

  - by espais

  Recently I upgraded to Service Pack 3, and now it seems that something has gone terribly wrong with the update. After logging in, my computer will blue screen after about 5 minutes and then go into a reboot loop (I don't have the exact error message handy). I have a Sager NP2092 notebook, running an Intel chipset. I'd rather avoid having to reformat my XP, especially with my copy of Windows 7 arriving right around the corner. After doing some Googling, I came across this article: Does your AMD-based computer boot after installing XP SP3? However, it deals with the AMD chips, and specifically states not to use its fix on Intel based systems. EDIT After killing the reboot, this is the error that pops up: STOP: 0x000000F4 (0x00000003, 0x8A187118, 0x8A18728C, 0x80604438) EDIT2 I have run Memtest86, and it reported 0 errors.

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• Windows bios fails to boot up, keeps resetting

  - by Dwayne Diamond

  When I turn the computer on this error always happens wher jus after it starts up this screen pops up wher it says F1 to enter BIOS setup or F2 to start Windows Normally and if I press F2 it goes into Windows but freezez then I hav 2 turn the pc off, Problem is the BIOS + Date and Time keeps resetting itself somehow and it's not the battery because I put a new one in so when I manage 2 load default settings and get it working after some struggle and I shut down the pc the next day I switch the pc on and does the whole process again... What could this problem be and how can I fix it??? Thank you

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• Updating sprite location with controls

  - by iQue

  So ive got a character in a 2D game using surfaceView that I want to be able to move using a button(eventually a joystick), but my game crashes as soon as I try to move my sprite. This is my onTouch-method for my steering button: public void handleActionDown(int eventX, int eventY) { if (eventX >= (x - bitmap.getWidth() / 2) && (eventX <= (x + bitmap.getWidth()/2))) { if (eventY >= (y - bitmap.getHeight() / 2) && (y <= (y + bitmap.getHeight() / 2))) { setTouched(true); } else { setTouched(false); } } else { setTouched(false); } and if I try to put this in my update-method: public void update() { x += (speed.getXv() * speed.getxDirection()); y += (speed.getYv() * speed.getyDirection()); } the sprite moves on its own just fine, but as soon as I add: public void update() { if(steering.isTouched()){ x += (speed.getXv() * speed.getxDirection()); y += (speed.getYv() * speed.getyDirection()); } the game crashes. Does any1 know why this is or how to fix it? I cannot figure it out. Im using MotionEvent.ACTION_DOWN to check if the user if pressing the screen. }

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• Remote Desktop fails with no error

  - by Duane

  Recently, I've been having problems connecting to a remote machine via RDP. I can connect fine exactly once, but all subsequent attempts fail until the remote machine is rebooted. I seem to authenticate properly, but the RDP logon dialog disappears after showing, "Configuring remote session..." for a few seconds. No errors or other useful info is written either to my screen or the Event Logs of the two machines involved. I've tried disabling remote sound as others have suggested, with no success. I'm still investigating a solution, but would appreciate any thoughts. Fortunately, I can reboot the box remotely w/o causing any problems, but this is a less than ideal workaround.

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• How to help FGLRX detect a device

  - by user113416

  I have HD 4850 card, Ubuntu 12.10 and installed legacy drivers using makson96 ppa. The issue is, that FGLRX can not detect my device and loads vesa bios. I had the same problem on ubuntu 11.10, 12.04 versions. I want to manually help fglrx find a matching device to load as it shoudld do. It is interesting, why does fglrx search for a device in a PCI:0@1:0:1 Bus? in xorg.cof different bus is indicated: Section "Device" Identifier "aticonfig-Device[0]-0" Driver "fglrx" BusID "PCI:1:0:0" EndSection fglrxinfo display: :0.0 screen: 0 OpenGL vendor string: Advanced Micro Devices, Inc. OpenGL renderer string: ATI Radeon HD 4800 Series OpenGL version string: 3.3.11653 Compatibility Profile Context Here is a part of my xorg log: [ 3.846] (II) VESA: driver for VESA chipsets: vesa [ 3.846] (II) FBDEV: driver for framebuffer: fbdev [ 3.846] (++) using VT number 7 [ 3.846] (WW) Falling back to old probe method for fglrx [ 3.883] (II) Loading PCS database from /etc/ati/amdpcsdb [ 3.883] (--) Assigning device section with no busID to primary device [ 3.883] (--) Chipset Supported AMD Graphics Processor (0x9442) found [ 3.884] (WW) fglrx: No matching Device section for instance (BusID PCI:0@1:0:1) found [ 3.884] (II) AMD Video driver is running on a device belonging to a group targeted for this release [ 3.884] (II) AMD Video driver is signed [ 3.884] (II) fglrx(0): pEnt->device->identifier=0xb7791d8f [ 3.884] (WW) Falling back to old probe method for vesa [ 3.884] (WW) Falling back to old probe method for fbdev Thanks in advance.

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• OpenGL lighting with dynamic geometry

  - by Tank

  I'm currently thinking hard about how to implement lighting in my game. The geometry is quite dynamic (fixed 3D grid with custom geometry in each cell) and needs some light to get more depth and in general look nicer. A scene in my game always contains sunlight and local light sources like lamps (point lights). One can move underground, so sunlight must be able to illuminate as far as it can get. Here's a render of a typical situation: The lamp is positioned behind the wall to the top, and in the hollow cube there's a hole in the back, so that light can shine through. (I don't want soft shadows, this is just for illustration) While spending the whole day searching through Google, I stumbled on some keywords like deferred rendering, forward rendering, ambient occlusion, screen space ambient occlusion etc. Some articles/tutorials even refer to "normal shading", but to be honest I don't really have an idea to even do simple shading. OpenGL of course has a fixed lighting pipeline with 8 possible light sources. However they just illuminate all vertices without checking for occluding geometry. I'd be very thankful if someone could give me some pointers into the right direction. I don't need complete solutions or similar, just good sources with information understandable for someone with nearly no lighting experience (preferably with OpenGL).

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