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• Can I replace my notebook's fan without replacing the heat sink?

  - by kuzzooroo

  My laptop (Acer Travelmate 8204) has started making a grinding noise, which seems to be coming from the fan (not the hard drive). Some articles online mention replacing the fan, but others imply that one should replace both the fan and the heat sink. Does it make sense to replace the fan only? (addendum: does this procedure really take 3 hours for a noob, as this video implies? UPDATE: the fan certainly seems to be on the "top" layer when I open my laptop but some parts of it extend under other layers) Some additional info in response to comments: I have run MS scandisk on the hard drive a few times since the grinding started. It usually reports finding something or other but the computer's behavior doesn't change I'm pretty sure it's the fan based on where the noise is coming from. I employed the cardboard tube trick from the PC World article.

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• process running on login: can't find in AD or login batch scripts

  - by tombull89

  Hallo, I'm trying to deploy some classroom control software (NetSupport School) to some of the machines on our network but for some reason when you log off and restart the computer any user who logs on ends up re-installing the software while logging on. I spent two hours on the phone to the complanys support and we eventually nailed it down to most likely a setting in Active Directory or in the login.bat (drive mapping and settings) but we can't find anything in those that would say "run this installer at logon". Is there anywhere else on the system that would set something like this? Server 2003/XP. Ta!

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• Upgrading from 32 to 64 Bit Windows 7, without losing program installations/games

  - by Fogest

  I recently built a new computer and put the wrong installation of Windows on (32 bit), meaning I cannot use all of my RAM. I would like to upgrade to the 64 bit version, though I already have downloaded many programs and games which would total to around 30 GB give or take. I don't have the kind of data usage with my ISP to re-download this much data again, until next month (total GB will be higher as time goes on). I know there is Windows Easy Transfer, but it is not so much my data itself I'm worried about, it is more having to re-download and install a bunch of games and applications. Is it possible to perform an upgrade from 32 bit to 64 bit without this loss?

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• How can I create an orthographic display that handles different screen dimensions?

  - by Piku

  I'm trying to create an iPad/iPhone game using GLES2.0 that contains a 3D scene with a heads-up-display/GUI overlaid on the top. However, this problem would also apply if I were to port my game to a computer and run the game in a resizable window, or allow the user to change screen resolutions... When trying to make the 2D GUI/HUD work I've made the assumption that all I'm really doing is drawing a load of 2D textured 'quads' on the screen and am trying to treat the orthographic projection as an old-style 2D display with 0,0 in the upper left and screenWidth,ScreenHeight in the lower right. This causes me all sorts of confusion when I rotate my ipad into Landscape mode since I can't work out what to put into my projection and modelview matrices to turn everything around the right way. It also gets messy if I want to support the iPad's large screen, an iPhone or a Retina display since I have to then draw three sets of textures for everything and work out which ones to use. Should I be trying to map the 2D OpenGL co-ords 1:1 with the screen? While typing out this question it occurs to me that I could keep my origin in the centre, still running -1/+1 along the axes. This would let me scale my 2D content appropriately on the different screen sizes, but wouldn't I end up with the textures being scaled and possibly losing quality? I'm using OpenGLES 2.0 and have a matrix library that has equivalents to the GLES1.1 glOrthof() and glFrustrum() calls.

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• Downloading file from FTP using cURL

  - by Josiah

  I'm trying to use a cURL command to download a file from an FTP server to a local drive on my computer. I've tried curl "ftp://myftpsite" --user name:password -Q "CWD /users/myfolder/" -O "myfile.raw" But it returns an error that says: curl: Remote file name has no length! curl: try 'curl --help' or 'curl --manual' for more information curl: (6) Could not resolve host: myfile.raw; No data record of requested type I've tried some other methods, but nothing seems to work. Also, I'm not quite sure how to specify which folder I want the file to be downloaded to. How would I do that?

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• Game crash/Screen freeze recovery (without shell or reboot)

  - by Asavar Tzeth

  I am an old Windows PC gamer, now converted into Ubuntu (Linux) lover. I am even going so far as to attempt to replace all my games in a Windows dual-boot with Wine and it is going well. However... Even if Linux is less prone to crashing, games, especially the windows ones (but also a few native) can crash. My problem is when this is in full screen and the computer becomes non-responsive. In Windows you can solve this with ctrl+alt+delete, but Ubuntu lacks this feature and my only choice is a reboot. Is there any Ubuntu version of this feature? Of course excepting the ctrl+alt+F1, find and kill process method. It is fine if you know how to do it, but too slow and difficult for the typical gamer. I believe strongly in Ubuntu as the future gaming platform in one form or another. If this feature does not exist, then the Ubuntu team should address this as fast as possible, since it is critical for all old Windows gamers. Thank you for your time. Asavar Tzeth (Alias)

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• Does lshw list the "factory" speed of a memory module or the effective speed and how to find the former?

  - by Panayiotis Karabassis

  I hope I phrased this correctly. lshw gives: description: DIMM Synchronous 400 MHz (2.5 ns) product: M378B5773CH0-CH9 vendor: Samsung physical id: 0 slot: DIMM0 size: 2GiB width: 64 bits clock: 400MHz (2.5ns) And indeed the memory speed is set is set to 800MHz in the BIOS, which I think makes sense since it is a double rate. On the other hand, Googling strongly suggests that to this product number corresponds the PC3-10600 type, which is 1333MHz, not 800MHz. And this seems to be confirmed in the BIOS, where if I select Auto for memory bus speed, 1333MHz is selected "based on SPD settings". However in the latter case, the computer does not boot, i.e. the kernel panics, complaining that something attempted to kill the Idle process. So, I am I am beginning to suspect that I have been given defective memory, the technician that installed saw this, and lowered the bus speed. Is this a possibility?

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• SSD I/O extremely slow installing/booting Ubuntu 12.04

  - by Menda

  These are some useful specs: Macbook Pro 7,1 OWC Mercury Extreme Pro 2,5" SATA SSD (120 GB). Has SandForce driver. Ubuntu 12.04 Desktop 32 bits. One 18 GB partition for GNU/Linux and 1.5 GB for SWAP. MD5 for the Ubuntu install CD is OK. I tried to install Ubuntu. It seems that everything is recognized, but there's a big problem: read and writes to the SSD are extremely slow. For example, the install process, which shouldn't take more than 20 minutes, it takes 7 hours. Then, booting up the computer takes about 20 minutes. I checked and the problem is definitely the SSD. Every access to any file is like 10 times slower than normal. I have tried to format the partition as Ext4 and Ext3 with the same problem. Trying to install other distros like Fedora 17, I have a similar problem. There's a "lag" with the SSD, but not so accused as in Ubuntu. Surprisingly, Debian 6.0 installs and works without any problem. Mac OS works pretty good as well in the other partition, so I discard it's an SSD problem. Thanks for your help!

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• I shrunk the Windows partition, now it says grub rescue on boot

  - by user1009013

  I have got a machine with dual-boot Windows 7 and Ubuntu 11.10, and I wanted to add another OS to that (Jolicloud), so I started the partition manager in Windows and shrunk the Windows partition by about 10 GB (so now I have:Windows;currently empty 10GB;Ubuntu). I shutted down the computer because I was finished. Now when I started my machine again it says error:no such partition. grub rescue> and I can type commands. ls gives (hd0) (hd0,msdos5) (hd0,msdos4) (hd0,msdos2) (hd0,msdos1) (fd0) if that helps

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• Why does HDTune report better performing drives 2 months after installing them?

  - by Rolnik

  OK, so this is really weird. I ran HDTune on a newly set-up home-built computer and got the following readings from my drives in mid-November. SSD 154 MB/s RAID1 87 RAID0 198 (software installs) RAID0 98 Swap drive Today, in January, I run HDTune (same version) and get these results, in MB/s: SSD 186 RAID1 98 RAID0 241 RAID0 98 (Swap drive) Here are more details that HDTune reports on the SSD drive: HD Tune: OCZ-VERTEX Benchmark Blockquote Transfer Rate Minimum : 135.4 MB/sec Transfer Rate Maximum : 219.4 MB/sec Transfer Rate Average : 185.7 MB/sec Access Time : 0.1 ms Burst Rate : 187.3 MB/sec CPU Usage : -1.0% To get to my question: Why are my hard drives improving in performance? Most of my logical drives are in some form of RAID, except for the SSD. Will this performance ever deteriorate? Note, none of my drives are a hybrid drive that uses some form of SSD to enhance the write/reads on actual platters.

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• Installed IE8 & SP3 on XP now I can't HTTPS from any browser

  - by Kevin

  The computer is Windows XP Professional SP3 with IE8. On the Tools Options Connections the "Settings" is GRAYED OUT (I am an admin on the machine) Any browsing of https:// addresses results in IE displaying the following: "this program cannot display the web page" After installing an alternate browser and trying the same https:// address I get a similar error message. I have tried using Compatibility View Settings to for all web pages and this has no effect on the problem. HTTP addresses work fine, I can PING sites such as google.com without issue. Question: What could be preventing me from getting at the settings to check to see if I'm using a proxy? What else could be preventing HTTPS access?

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• Are all SATA cables compatible with SATA 3?

  - by Jim Fell

  I have a HP Compaq de5700 Small Form Factor desktop computer, and I am looking to upgrade it's hard drive. When I open up the box, it clearly has available SATA connectors on the motherboard, but no indication as to which SATA version (1, 2, or 3). The hard drive I am considering is a SATA 3. My concern is that if the motherboard also supports SATA 3 and I use an old SATA cable (v1 or v2), might there be problems? This is a bare drive, so I don't expect that a cable will come with it, and I have not been able to find the manual for this machine. Thanks.

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• Samsung TV connected to PC for Powerpoint

  - by Skaughty

  I have a 42" Samsung LCD TV connected to a Dell computer with a PCI Radion 9000 via a 35' VGA cable. It's purpose is to run power point presentations over the TV for our retail store. I have tried every combination of button clicking on the video card options, and everything on the TV, and I still get black bars on the top and bottom of the image. It looks like I am watching a old wide screen movie on a full screen TV. The TV's suggested resolution is 1024x768, and that is what the output is set to. I have tried this with a nVida PCI card as well with the same results.

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• Dualboot (Win 8 / Ubuntu 13) is stuck at 'switching to clocksource'

  - by Daniel Puscht

  for days I have been crawling the web for solutions to my problem, but couln't find any. Here it is: I got a new Laptop (ASUS Vivobook S200E) with Win 8 OEM preinstalled. I wanted to create a dual-boot system with Ubuntu 13 next to it. I read about UEFI and that I have to turn of Secure Boot and use the existing EFI partition as bootloader for Ubuntu. So I did. I also ran boot-repair reinstalling the GRUB. The result is when I start the computer I get into the boot menu. So far, so good. When I pick Win everthing is fine. But when I choose Ubuntu (recovery) the system starts, but gets stuck at the line '[1.806366] Switching to clocksource tsc'. I already tried other versions of Ubuntu (12.04.2, 12.10). I played with boot-repair (using the recommended fix, setting everything manually). But nothing works. It's always the same issue. I read that it could be a problem concerning graphic drivers, but this I can hardly believe. If this is any help, boot-repair gave me this link to post in fora. http://paste.ubuntu.com/5810391/ Thanks for any help in advance

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• Can't access Terminal anymore, only shows a cursor

  - by user138304

  I run OS X. Following these directions (Installing MySQL on Mac OS X) I added a file to /usr and the contents were PATH=/usr/local/mysql/bin:$PATH Actually I was trying to get the mysql command to work now I cannot access terminal. All I get is a cursor but no command line. I also cannot find the file I created in the Finder. I used command shift G to find the folder /usr and the file is not there. Edit: I Solved the problem by restarting my computer. I am really not sure what the problem was. I got the idea because Could not open a new pseudo-tty. appeared in my terminal after following slhck directions to remove my .profile file. I then searched google and found this; http://blogs.oreilly.com/digitalmedia/2008/03/fixing-terminal-tty-errors.html. Thanks

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• Why does my CPU Usage reach 100% too often?

  - by deathlock

  I'm using a dual-core processor and often see my CPU usage reaches 100%. I realize this may happen if I'm running too much applications, so when I know the computer starts to run slowly, I start to close my applications. I usually run 4-5 applications simultaneously. Usually those are: web browser (Google Chrome), Adobe Photoshop, Notepad++, XAMPP, and Windows Task Manager. Usually I close tabs in my Chrome first, because I often browse the net with about 20 tabs/4 windows open, so I presume that would take much memory (bad habit, I know). But even after closing Chrome's tabs or closing other applications, my CPU Usage often stays at high percentage - 72% at best, 100% at worst. I check the Processes tab on Windows Task Manager and usually found the System, System Idle Process, or services.exe taking the highest CPU process (could reach 60). Why is this happening? And is there any solution? EDIT I have T2250 @ 1,73 Ghz and 2.5 GB RAM

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• Can't install newer NVIDIA display driver on Windows 7

  - by Mr.X

  I'm using Windows 7, and the latest version of NVIDIA display driver I can install on my computer is 275.33 (or 266.58, I can't decide now, see below). When installing newer version of the driver (e.g. 275.50 and 280.26), the installer always fails at "Installing NVIDIA Control Panel", then Windows 7 reverts to 275.33 (the newest stock version?). I tried to find installation logs but couldn't find it. I tried to completely delete (in fact I renamed) c:\progra~1\nvidia~1 folder but still couldn't install. How to resolve this problem? Any help is appreciated.

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• DVI problem with LG L204WT

  - by Holgerwa

  I have a LG L204WT which has VGA and DVI connectors. Until recently, I have used the monitor via VGA, but now I have upgraded the graphics board and switched to DVI. The problem is that each time after the computer starts, the monitor either doesn't show anything (black screen, but doesn't go into standby) or the picture is distorted. I then switch the monitor off and on several times, and at some point it starts correctly and then I can work as usual. This only happens on startup. It is one out of 3 monitors, the other two work fine. It seems to me as if the monitor is not able to synchronize on the DVI signal and either shows a distorted picture or nothing at all. There are no settings in the monitor setup that would change anything. What could be the problem?

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• Sniff packets using tcpdump

  - by denisk

  I have a completely noob question. I want to see all packets that come to my computer from particular site (google.com). So I start tcpdump sudo tcpdump -i eth0 host google.com and enter google.com in a browser and hit enter - nothing gets captured. I can't figure out why it happen. What do I do wrong? Edit It appeared that I was listening to the wrong interface. I had changed eth0 to any and it worked. It was ppp1 that needed listening. Thanks for your answers!

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• Is writing recursive functions hard for you?

  - by null

  I'm taking a computer science course now. I feel it is so hard compared to my polytechnic IT course. I can't understand recursive methods well. How do you manage to get your brain to understand it? When the recursive method returns back, my brain can not trace it nicely. Is there a better way to understand recursion? How do you start learning it? Is it normal that feel that it is very hard at then beginning? Look at the example, I'm very surprised how can I write this if it appears in exam. public class Permute { public static void main(String[] args) { new Permute().printPerms(3); } boolean[] used; int max; public void printPerms(int size) { used = new boolean[size]; max = size; for (int i = 0; i < size; i++) { used[i] = false; } perms(size, ""); } public void perms(int remaining, String res) { if (remaining == 0) { System.out.println(res); } else { for (int i = 0; i < max; i++) { if (!(used[i])) { used[i] = true; perms(remaining - 1, res + " " + i); used[i] = false; } } } } }

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• Browsing freezes after installing SP2 on Vista

  - by n21jc

  After installing SP2 on Vista 32-bit HP laptop, all browsers (Firefox, IE, Maxthon) periodically freeze randomly. It occurs when opening a new webpage. It might happen after 45 minutes of browsing, or 3 minutes. The only way to get out of it is to right click the taskbar, "end program", and say "close now" when it tries to search for a solution. Or occasionally, I have to hard reboot. It doesn't seem to correlate with any one particular type of webpage, but I'm assuming that something being loaded doesn't play well with my system. I would uninstall SP2, but it fixed several even more annoying system problems I'd had with my computer.

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• Bluetooth connectivity

  - by Viniketa

  computer: Samsung All in One PC OS: Windows 7 (up-to-date) BT Radio: Broadcom I have Bluetooth speakers I have successfully used with the system in the past. In fact, I had them set as default speakers so audio would transfer when I turned them on. No longer. Now, they show as 'disconnected'. Asking for connection gives no response. Option to set as default is greyed out. Bluetooth view utility gives an error of 10049 when I try to connect (supposedly, the means an invalid device address). I uninstalled the device and re-installed. No help. Any advice? Thanks in advance.

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• AppleTV - itunes store is temporarily unavailable - please check back later

  - by Ken

  When attempting to rent a movie on ATV, my wife received the error message above.  Alternately “server unavailable”.  When your wife is sick, the amount of IT support she needs goes up exponentially.  One piece of the puzzle was that she had changed her Apple ID password.  On her PC I ran iTunes and under account, there was only 1 device listed (not the ATV).  Even when signed out/back-in on the ATV under Settings>iTunes it still gave same error message.  What I suspect is it thinks she is trying to authorize the device to another Apple ID.  Some new 90 day rule limits when a device can be associated with another Apple ID.  Your iTunes store/account will show devices, and how long before they can be associated with a different Apple ID from the Account Information page in iTunes on your computer.  Apple must have no freaking idea why someone would want to know which ID is associated to the ATV (i.e. the vice versa), because it can’t be done. Solution: Try ATV settings>reset I swapped out ATV 1 for ATV 2 (used for music streaming downstairs).  I know it’s a cop-out solution, but remember I had a sick wife breathing down my neck.

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• Any examples of fair mmo games with quick completion

  - by Keith Player

  I'm looking for some example games for inspiration that allow from 10 to a large number of players at a time and can be completed in 10 to 30 minutes. I'm looking for something that would have extremely low bandwidth and not be dependent on chance or luck (i.e one player can't gain an unfair advantage because the computer put them in a better position). Realized on the way home that more clarifications might have been helpful. I'm looking to develop a pay-to-play competition that would allow a large number of players to compete in a relatively short period of time. One way would be to have an mmo that can be completed in 30 minutes, another way would be if you could have 10 person games that finish in under 5 minutes and then have the winners compete against each other until a winner is decided. I'm interested in any genre that would make for a fun/interesting game that doesn't depend on luck, so all players should have the same choice/availability of activities/resources and follow the same rules. Some possible games that could possibly be modified into what I want, would be bztanks (too easy to create a bot), diplomacy (takes too long), risk, some chess like game. I was just wondering if there are other game types to the ones I have been considering.

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• Change Win7 taskbar position (overriding GPO, Registry Editor, Admin. Rights)

  - by diegocavazos53

  I run the computer center of my Faculty and the problem is that users manage to change the Win7 taskbar position. I don't really know how they do this as far as I have applied many group policies that are specific to the taskbar (like locking it). I have also disallowed users from entering new registry keys or executing the command prompt (or employing scripts). They have regular user rights and many Win7 tweaking programs need administrator rights to make changes to the GUI. So in other words, the taskbar is locked, there is a policy that sets its position to the lower part of the screen, users can't see the control panel, add registry keys, use the command prompt and don't have admin. rights. How do they keep moving the taskbar position to the upper part of the screen? Any ideas would be greatly appreciated. Thank you.

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