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• How can I get nVidia CUDA or OpenCL working on a laptop with nVidia discrete card/Intel Integrated Graphics?

  - by PeterDC

  Background: I'm a 3D artist (as a hobby) and have recently started using Ubuntu 12.04 LTS as a dual-boot with Windows 7. It's running on my a fairly new 64-bit Toshiba laptop with an nVidia GeForce GT 540M GPU (graphics card). It also, however has Intel Integrated Graphics (which I suspect Ubuntu's been using). So, when I render my 3D scenes to images on Windows, I am able to choose between using my CPU or my nVidia GPU (faster). From the 3D application, I can set the GPU to use either CUDA or OpenCL. In Ubuntu, there's no GPU option. After doing (too much?) research on the issues with Linux and the nVidia Optimus technology, I am slightly more enlightened, but a lot more confused. I don't care one bit about the Optimus technology, as battery life is not by any means an issue for me. Here's my question: What can I do to be able to use CUDA-utilizing programs (such as Blender) on my nVidia GPU in Ubuntu? Will I need nVidia drivers? (I have heard they don't play nicely with Optimus setups on Linux.) Is there at least a way to use OpenCL on my GPU in Ubuntu?

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• MySQL server simple insert/update/delete queries are taking a long time to execute

  - by ElGabbu

  We have a VPS hosting server with a MySQL server running on it. We host several databases for client's websites. Recently we have noticed that insert/update and delete queries are taking a long time to execute sometimes as close as 30 seconds. I use the following command to see these queries being executed: watch -n1 mysqladmin proc stat We have still not been able to track the root of this problem. I would apprecite if anyone had any pointers as to what we can check or improve to resolve the issue. Thanks

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• What are possible reasons why a calendar entry in OWA is at a different time than in Outlook?

  - by Ken Pespisa

  We have two Exchange 2003 servers, our primary server and a front-end server that hosts Outlook Web Access (OWA). When I open my boss' calendar via Outlook 2007 (from my Outlook client as well as hers) I see the event scheduled for 10:30 am. When I open her calendar via Outlook Web Access, the same event is scheduled for 4:30 am. I don't understand Exchange well-enough to imagine how this is possible. If you have any ideas why this could be happening, I greatly appreciate it. I'd also very much appreciate any insight you have to how this could be possible. There must be some cached data on the front-end server that causes the calendar entry to appear at a different time, I suppose. Any insight into how Exchange manages that cache and where I could look for an issue would be very helpful. Thank you!

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• Windows hiding other user's files?

  - by JoshJordan

  I had a hard drive whose windows installation (running Vista) became corrupt. I bought a new hard drive, installed Windows 7, and hooked up the old drive using an external enclosure. The Users folder on the old drive shows the users that existed on the machine, but it doesn't show any of the contents of them. I assume this is due to not having the permissions I need. I have "taken control" of the folders I'm interested in, but this didn't prompt me for the original owner's password as I expected, and I still can't see the file contents. I would guess that this is a fairly common issue, but I'm not sure what to Google here. How can I get access to files in that drive's User directory?

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• CSS file not served by IIS 7.5 after multiple clear cache refreshes in a row in browser

  - by KenB

  We are experiencing an interesting issue with IIS 7.5 static caching and a css file. When we use IE to hit the page in question everything works fine - 200 OK on css file. When we refresh the page it works fine - 304 Not Modified on css file. When I refresh again with control key it reloads fine - 200 OK on css file. Now if I do a control key + refresh multiple times in a row really fast the css fails to load and in the developer tools network it says "Loading..." for the css file and it hangs never coming back. Any ideas?

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• Fusion 3, Windows 7, frequent blue screens

  - by kenny6127

  Is anyone else seeing this problem? A solution would be great (hey, it's Windows, it's gonna blue screen, just gotta deal with it), but it's also nice to know if it's something specific to my configuration, or if a lot of folks are having the same issue. Here's the details: * MacBook Pro 15" unibody, 4 GB, 2.4 GHz, 10.5.8 * Fusion 3.0.1 * Windows 7 Pro, 32-bit (clean install, not migrated from Boot Camp or anything) Blue screens happen nearly every time the MBP cover is closed for a short period of time (< 3 minutes). If the cover is closed for a half hour or longer, the VM is fine. I'm guessing it might be related to sleep, but that's hard to tell, and the Windows crash dump logs are pretty useless. Thanks!

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• No image from graphics card but image from onboard video

  - by ReAzem

  I have an HD 5970 running on a P8Z68-v LE motherboard and I have no image comming out of the graphic card. When I plug my screen on my motherboard, I see the bios and the OS. When I plug my screen on the graphic card, I don't see anything. I know that the graphic card works because I have tested it on another computer. I know the motherboard works because I tested it with another graphic card and it worked. I know that the graphic card works with the computer because I have another computer with a P8Z68-LE and an HD 5970. I know it is not an OS issue because I should atleast be able to see the bios. I have tried unplugging my HDDs so that the OS dont interfere with anything. Using a 1000W power supply Using another HD5970 on the computer works. So this is a problem with my HD5970, but why is the graphic card working on my other computer?

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• SMB/CIFS connection, attempting to change the permissionswithin rhel5 to comply with the clients needs

  - by Skreemer

  I can get the mount to work and as written in /etc/fstab: //pcsprdvhost.prod.tsh.mis.mckesson.com/sftphome /sftphome2 cifs username=myuser,workgroup=domain,password=mypassword,noserverinfo,uid=tmadmin,gid=tibco,nounix,file_mode=0777,dir_mode=0777 0 2 this means that every directory under /sftphome2 looks like: drwxrwxrwx 1 tmadmin tibco 0 Jul 6 2010 D0000001 When I issue: chown -R D0000001:D0000001_admin D0000001 Nothing happens. When I pull the uid and gid specifications out I get the system owner/group of root:sys What I need to be able to do is change the sub-directories under /sftphome2 to whatever owner and group (and permissions) I desire versus the ones that are getting specified. How do I do this?

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• Enable (or work around) Administrative shares in Windows 8

  - by Brado

  So in using Windows 8, I've discovered that the administrative shares are disabled. There seems to be no easy way to get them re-enabled. Is anyone aware of a work around, or solution? I did not have this issue with Windows 7 After disabling UAC. However in Windows 8 this still doesn't work. This is all I could find, however I am not satisfied with the information provided. http://www.computerperformance.co.uk/win8/windows8-administrative-shares.htm http://www.tomsitpro.com/articles/windows_8-file_sharing-windows_administrative_shares,2-195.html

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• Managing client passwords

  - by HurkNburkS

  I am just starting up a small website development business and one of the issues I am having is remembering passwords and account information for clients hosting, cpanel, ftp accounts etc. I was wondering what is the most suitable system / industry standard for controlling such information? Pretty marginal on the close there... I read the FAQ and I felt list this could be a common issue for webmasters, its defiantly not a coding questions so stackoverflow is out of the question and its not a broad question its focused on one particular aspect of being a webmaster.

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• Is there a BSD equivalent to "!!"?

  - by CT

  I often find myself issuing a command that I do not have the proper elevated privileges for. On Ubuntu I could use sudo !! This would issue the same command with sudo privlidges. Is there an equivalent on OpenBSD? Edit: I should have been more specific on what version of OpenBSD. I am using OpenBSD 4.8 where sudo seems to be installed by default. I have already created a user besides root and edited my sudoers file to allow for that user to use sudo. My question is, is there already a built-in shortcut for the "!!" to use previous command.

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• Are there any 17-20 inch monitors that support displayport?

  - by WildJoe

  I've got dual monitors now (both 20 inch 1600x1200). After seeing the new eyefinity cards out there (and reading the CodingHorror post on three monitors) I've decided to get a third. It's time to upgrade my video card anyway. Since I don't already have a third monitor and will be buying one new, I figure it'd make sense to buy one that already had a DisplayPort interface so as to avoid the adapter issue. However, I can't seem to find any monitors on newegg that support this (it's not even an option in the power search, and a keyword search turned up only adapters and video cards). A quick google showed me several 30 inchers (like Dell's, but that's way too expensive, and I don't have that much room on my desk even if I had that money) and some 22 inch models. Again, I'm looking for a 17-20 inch with a DisplayPort interface built in. Any suggestions?

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• How to make vim display unicode

  - by Yitzchak

  I am trying to work with a utf-8 encoded xml file in vim 7.3 running on ubuntu. ASCII characters display normally but vim gives me gibberish instead of the unicode characters. After trying the following, I've reached the limits of my knowledge: 1) Checked that unicode was enabled by running set termencoding?. Output was termencoding=utf-8. 2) I installed the script from here (vim.org/scripts) 3) moved my ~/.vimrc file into ~/.vim 4) moved it back into ~ 5) followed the instructions in the accepted answer to this question. Is there some other variable I'm supposed to set? I know my system has the fonts I need. Update: Issue seems to be limited to html files for some reason.

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• Remote connect to mysql server?

  - by LF4

  I've been trying to figure out why I keep getting this error when I try to connect to the MySQL server with the following commands. $~ mysql -u username -h SQLserver -p Enter password: ERROR 1045 (28000): Access denied for user 'username'@'myIP' (using password: YES) I've done the following: Port is open in the firewall other wise I wouldn't get the error it'd just timeout. MySQL server not running with skip-networking or bind-address username has host as '%' and I can connect locally so the password is correct. GRANT USAGE ON *.* TO username@% IDENTIFIED BY 'password'; FLUSH PRIVILEGES; I wanted to know if anyone had ideas or ran into this issue before and solved it? mysql> select user, host from mysql.user where user='username'; +----------+------+ | user | host | +----------+------+ | username | % | +----------+------+ 1 row in set (0.00 sec) mysql> show grants for 'username'; +----------------------------------------------------------------------------------------------------------------+ | Grants for username@% | +----------------------------------------------------------------------------------------------------------------+ | GRANT ALL PRIVILEGES ON *.* TO 'username'@'%' IDENTIFIED BY PASSWORD '*F42AD03PASSWORDHASHADF4021C86B' | | GRANT ALL PRIVILEGES ON `DB2`.* TO 'username'@'%' | +----------------------------------------------------------------------------------------------------------------+ 2 rows in set (0.00 sec)

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• It's the ethernet 10/100 in LAN transfer faster than USB 1.0?

  - by dag729

  I have an old laptop (PIII 800MHz, with 256 RAM) that I wish to use as my home server: it'll have to serve just two people, so I think that I'll be more than ok as for the RAM and the CPU. The issue is about data, because the internal hard disk is a 12GB, that is...ridicolous! I have more than 60GB of mixed storage and counting (images, videos and music) in an external usb hd. I could put the hd in my desktop pc just to serve the big files through ethernet or let it inside its usb box attached to the laptop. The question is: which of these solutions will be the fastest? USB 1.0 attached to the server (laptop) or internal hard disk serving files via 10/100 ethernet to the laptop on demand?

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• Relating ping to perceived browser GUI response

  - by cvsdave

  We periodically get complaints of poor GUI (browser page) response that we need to explore. I am looking for a quick and cheap first check to see if the issue is network latency, or server performance. Has anyone encountered any discussion of ping time and perceived GUI response? I understand that GUI response is complicated, but it would be nice if we could find or develop a rule of thumb along the lines of "Hmmmm, ping is over 200, it might be network problems". Ideally, this lives in a script on the user's machine so that we can see the latency that they are seeing... (BASH, Linux). A reference to a good discussion page would be a fine answer, as would any recommendation of other source material.

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• What's the proper way to change a process' scheduling policy to IDLE?

  - by ??O?????

  Hello. I have a long running process on a server running Ubuntu Server 9.10. I would like to make it run under the SCHED_IDLE policy using the chrt command. However, after reading the man page, I can't manage to understand the proper way to issue the command for a running process. I've tried unsuccessfully: # chrt -i -p 688 pid 688's current scheduling policy: SCHED_OTHER pid 688's current scheduling priority: 0 # chrt -p -i 688 pid 688's current scheduling policy: SCHED_OTHER pid 688's current scheduling priority: 0 # chrt -p 688 -i chrt: failed to set pid 0's policy: Invalid argument I'll keep trying, but do you know how to do what I want?

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• Occasional HDD Related Hangs

  - by diolemo

  I have an issue that seems to be disk related. Occasionally my system will block for 30 or so seconds and is mostly unresponsive. Those things already in memory requiring no disk access continue to function but those things requiring disk access (even small) hang. 30 seconds later everything is back to normal. I have 2 Samsung drives in RAID 0. I have 1 WD drive (has pagefile) I have an SSD used for caching (Intel Smart Response). This is a new install of Windows and the drives were fine in my old PC (~1 month ago). Has anyone experienced anything similar? Any suggestions to solve this one? Thanks in advance.

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• Very Dark Windows 7 Screen

  - by user147521

  My Gateway laptop -Windows 7- screen became too dark a few days ago after I finished installing Windows automatic update. I can see nothing unless I use a flashlight. Windows login screen is the only bright screen for few seconds. What should I do to resolve this issue? I checked power-saving/ Power Options settings and rebooting in Safe Mode. I tried to lower the refresh rate but it did not allow me. The laptop adapter type is ATI Radeon Xpress series. I calibrated display color. I uninstalled and reinstalled the adapter. I tried to update the driver but the driver is up to-date. Any help would be appreciated.

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• jQuery - upgrade from version 1.6.x to 1.7

  - by Renso

  Goal: Issues to consider when upgrading from jQuery version 1.6 to 1.7. This is a short list and may help identify the real issues you need to concern yourself with in stead of reading through all the release notesSummary of issues encountered during upgrade:As you prepare for upgrade to jQuery 1.7 from 1.6.x, this is a quick glimpse of all the issues that are relevant, not sure if it covers all but may be all you need to worry about.Use this method only for checking checkboxes and radio buttons:$("input:checked")http://api.jquery.com/checked-selector/This will work regardless of the version of jQuery you are using. Note that $("input).attr("checked") returns true prior to jQuery 1.6. Only retrieve "real" attributes with "attr", in order versions it would also retrieve properties like "tagName", this no longer works with jQuery 1.6.1+Why does $("input").attr("checked") no longer (from version 1.6.1+) return TRUE or FALSE, because if you look at the HTML (as well as W3C spec) it does not contain a true/false, but the value checked="checked", which is what it should have returned in the first place. $("input").prop("checked") works, return true, because there is in fact a DOM property for "checked" with the value being "true" or "false".Furthermore, if you want to upgrade to jQuery 1.7 you should only have to worry about this for most part:1. isNumeric() is new, be careful as the older version jQuery.isNaN() has been deprecated2. jqXHR success and error have been deprecated3. When rendering content with text(), white space issue cross-browsers: http://bugs.jquery.com/ticket/3144Other than the issues above I am not aware of any deprecations you need to worry about.Hope this helps to get everyone up to version 1.7

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• No Need to Disable Java, Update Instead

  - by Tori Wieldt

  Oracle has just released Security Alert CVE-2012-4681 to address 3 distinct but related vulnerabilities and one security-in-depth issue affecting Java running in desktop browsers.  These vulnerabilities are: CVE-2012-4681, CVE-2012-1682, CVE-2012-3136, and CVE-2012-0547.  These vulnerabilities are not applicable to standalone Java desktop applications or Java running on servers, i.e. these vulnerabilities do not affect any Oracle server based software. Due to the severity of these vulnerabilities, the public disclosure of technical details and the reported exploitation of CVE-2012-4681 "in the wild," Oracle strongly recommends that customers apply the updates provided by this Security Alert as soon as possible.  Developers should download the latest release at http://www.oracle.com/technetwork/java/javase/downloads/index.html   Java users should download the latest release of JRE at http://java.com Windows users can take advantage of the Java Automatic Update to get the latest release JUG leader John Yeary tweeted "I want to take a moment to THANK #Oracle for doing the right thing. Too often people don't say thanks enough when they get it right." Thanks for your thanks.  For More Information Oracle Security Alert for CVE-2012-4681 Change to Java SE 7 and Java SE 6 Update Release Numbers

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• What sort of things can cause a whole system to appear to hang for 100s-1000s of milliseconds?

  - by Ogapo

  I am working on a Windows game and while rendering, some computers will experience intermittent pauses ("hitches" for lack of a better term). When profiled they appear in seemingly random places in the code. Eventually I noticed that it wasn't just my process that was affected, but (seemingly) every process on the system. All of the threads in my application hitch at once. The CPU utilization drops during these hitches and it appears as if most processes make no progress. This leads me to believe this may be an Operating System or Driver issue, but it only occurs while playing the game (and only on some systems). What sort of operations might the operating system be doing that would require the kernel to pause all user threads and block. Some kind of I/O? At first I thought of paging but my impression is that would only affect a single process, no? Some systems in use: Windows, DirectX (3d), nVidia cards (unknown if replicates on ATI), using overlapped io for streaming

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• Collider2D and Rigidbody2D, how do they work?

  - by user42646

  I have been learning JavaScript and Unity for a week now. I learned how to make Cube as a Ground and another Cube as a player and I used this code to make the Player Cube move forward and backward and jumping var walkspeed: float = 5.0; var jumpheight: float = 250.0; var grounded = false; function Update() { rigidbody.freezeRotation = true; if (Input.GetKey("a")) transform.Translate(Vector3(-1, 0, 0) * Time.deltaTime * walkspeed); if (Input.GetKey("d")) transform.Translate(Vector3(1, 0, 0) * Time.deltaTime * walkspeed); if (Input.GetButton("Jump")) { Jump(); } } function OnCollisionEnter(hit: Collision) { grounded = true; } function Jump() { if (grounded == true) { rigidbody.AddForce(Vector3.up * jumpheight); grounded = false; } } I also learned how to make a character hit box. how to make a sprite and animation. pretty much the basic stuff. Couple of days ago I created simple ground in Photoshop and a simple character and imported them to Unity3D. Whenever I use my code above the character keeps falling from the scene. Like the character has nothing to stand on. After thinking about it it make sense because I really didn't make anything to make the player character understand that he should stand on something so I started reading about this issue and I realized that there is something called Collider2D and Rigidbody2D. Now I'm really stuck here I just don't know what to do. I applied the rigibody2d to my character picture and the Collider2D to the ground picture but whenever I play the project the gravity makes my character falls down. This is my question: How can I make the rigibody2d object realize that it shouldn't fall if there is a Collider2D object under it? So when I jump it's going to jump and the gravity going to bring it back to the ground.

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• Grub not loading after Windows 8 Install

  - by RazorXsr

  My system was configured to dual boot Ubuntu 12.04.1 LTS and Windows 7. Today I got my hands on the MSDN release of Windows 8 and I installed it over my Windows 7. Now the computer just boots to Windows 8 directly without loading the GRUB screen. So I followed the steps as suggested in: https://help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows. Running this command: ls -l /dev/disk/by-label/ gives the following output: total 0 lrwxrwxrwx 1 root root 10 Sep 11 07:51 Entertainment -> ../../sda2 lrwxrwxrwx 1 root root 10 Sep 11 02:45 PENDRIVE -> ../../sdb1 Also fdisk -l command gives this as the output: Disk /dev/sda: 320.1 GB, 320072933376 bytes 255 heads, 63 sectors/track, 38913 cylinders, total 625142448 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x1246aa23 Device Boot Start End Blocks Id System /dev/sda1 * 2048 319582199 159790076 7 HPFS/NTFS/exFAT /dev/sda2 319582208 602906623 141662208 7 HPFS/NTFS/exFAT /dev/sda3 602908672 625135615 11113472 83 Linux Disk /dev/sdb: 1939 MB, 1939865600 bytes 64 heads, 63 sectors/track, 939 cylinders, total 3788800 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xc3072e18 Device Boot Start End Blocks Id System /dev/sdb1 * 2248 3788799 1893276 c W95 FAT32 (LBA) So I assume that I have to run this: sudo grub-install /dev/sda3 to get GRUB up and running. But I am getting this error: /usr/sbin/grub-probe: error: cannot find a device for /boot/grub (is /dev mounted?). Can anyone please guide me in the right direction? The current Ubuntu installation is far too customized to my needs to lose it to a boot manager issue! Any help is much appreciated!

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• Started an application through SSH, command line now gone, what happens next?

  - by Chris Dutrow

  Context: This is a very basic question Using Putty and SSH for the first time to do some serious server setup and run into the situation where I have started a process that I do not want to stop. The process is the gunicorn WSGI HTTP Server (running on Centos 6.3). The command I used to start the process is (as per their Quick Start): gunicorn -w 4 myapp:app At this point in the work session, I have lost the command prompt. This must be such a non-issue that it doesn't even enter into an experienced user's consciousness. But unfortunately at my level of experience, I am left with several fundamental questions: Does the fact that I have lost the command prompt mean that the process is still running? How do I get back to the command prompt without killing the process? How do I come back and monitor the process later? How do I eventually kill the process? Any help is appreciated, thanks so much!

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