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• Ubuntu/Linux version recommendation for HP dv6 3122TX?

  - by sanjayav

  I purchased a HP dv6 3122TX recently and after installing Ubuntu 10.10 64 bit I ran into multiple issues like, The wireless driver is not supported by Uubntu. (1) [The driver is RaLink RT3090 ] The ethernet stopped working sometimes for no reason [The driver is Realtek RTL8111/8168B ] "Corrupted low memory at ..." issue which is described as a kernel bug in Ubuntu support forums. (It started to take me to a terminal instead of the GUI and couldn't start x server after that) As I'm not an expert Ubuntu user I got fed up of all these issue and got back to Windows 7. But I need an Ubuntu installation up and running for my development work. What are your suggestions about a reasonable Ubuntu version that I should try? Or a different Linux variation? Should I stick to a 32-bit version? It'd be great anyone can give some advice on this issue.

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• Why is process not being displayed by TOP

  - by drN

  I am running a Mathematica script (this question probably doesn't fit in Mathematica.SE however) and I know that it generally takes up a lot of RAM and loads up my cores. However, althought pgrep MathKernel is showing a pid, I find that top doesn't show this in the top processes, although I notice that it is taking up about 2.25GB of the 8GB available to me. pmap -x my_process_id total kB 2243132 1907404 1892108 AND ps aux | grep MathKernel dnaneet 20837 12.6 23.3 2234944 1907404 pts/1 Sl 09:23 8:01 /share/apps/mathematica/8.0.4/SystemFiles/Kernel/Binaries/Linux-x86-64/MathKernel -runfirst $TopDirectory="/share/apps/mathematica/8.0.4" -script ./dcm_10micrometer_2x -- ./dcm_10micrometer_2x ps aux shows that the process is taking about 12% (In asterisks) dnaneet 20601 0.0 0.0 68264 1660 pts/1 Ss 09:15 0:00 -bash **dnaneet 20837 12.2 23.3 2234944 1907404 pts/1 Sl 09:23 8:01 /share/apps/mat** dnaneet 21922 0.0 0.0 65604 948 pts/1 R+ 10:29 0:00 ps -aux Did this process fail and is the MathKernel just lingering?

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• Repeating only a portion of a texture in OpenGL ES?

  - by uj2

  I know it's possible to repeat an entire texture by setting the wrap mode to GL_REPEAT, but is it somehow possible to repeat only a subregion of the texture? For example, when the texture is part of an atlas. I'm targetting OpenGL ES 1.x, so shaders are out.

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• Python module being reloaded for each request with django and mod_wsgi

  - by Vishal

  I have a variable in init of a module which get loaded from the database and takes about 15 seconds. For django development server everything is working fine but looks like with apache2 and mod_wsgi the module is loaded with every request (taking 15 seconds). Any idea about this behavior? Update: I have enabled daemon mode in mod wsgi, looks like its not reloading the modules now! needs more testing and I will update.

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• how to debug application as root in eclipse in Ubuntu?

  - by futang

  I'm programming application using libpcap. when I debug the application in normal mode, pcap cannot get the network device. it seems that I have to debug the application in root. How can I debug the application in root? I have the root password. I think eclipse has such an option that can add root for the debugging application,but I don't know how to do it. please help.

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• export block device over network without root

  - by dschatz

  I'm trying to export a file as a block device over the network. I do not have root access on the machine where the file exists. I do have root access on the machine(s) where I will mount the block device. I've seen ATA-Over-Ethernet and ISCSI but there don't seem to be any implementations which allow me to export the block without root at least (some even require kernel modules). Is there an implementation of either of these or some other protocol that doesn't require root? Perhaps I can tunnel ethernet over IP to do this?

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• How do I change the console resolution of Ubuntu 9.10 Server running on VMWare?

  - by Raam Dev

  I'm running Ubuntu 9.10 Server in VMWare Fusion (on a Mac) and I'm having trouble changing the console resolution. It seems to be stuck on 640x480. Ubuntu 9.10 uses Grub2, so there is no /etc/grub/menu.lst. I tried adding vga=791 to the kernel parameters (both during boot and by adding it to GRUB_CMDLINE_LINUX_DEFAULT in /etc/default/grub and then running update-grub2) and neither had any effect. When using vga=791, grub says that vga=791 is depreciated and that I should use gfxpayload=1024x768x16,1024x768 instead. However, that also does absolutely nothing. I have a feeling this problem is specific to running Ubuntu 9.10 in VMWare, but Google hasn't turned up anything.

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• Windows 7 x64 Hard Freezing (again)

  - by Lanissum

  Awhile ago, my computer was randomly freezing a few minutes after booting, and I ended up replacing the CPU and mobo after testing the RAM and hard drive, I also couldn't find anything wrong with the video card. So after replacing the presumably faulty hardware, everything worked fine for about a month and a half. All of a sudden, My computer is randomly freezing a few minutes after loading up any intensive application (games, mostly). Most of the time it just freezes with the current frame until I hard reset, although once it printed a BSOD message stating that dxgmms1.sys was to blame. The only difference between these two episodes I can think of is that I can do word/internet/work without issue now, as opposed to the near uselessness my computer was rendered last time. For those of you who want to know, I tested my memory with memtest86 (for 64 bit machines). I can't figure out what could have started this latest round of issues, the event logger just states that a kernel-power event has occurred (like last time) but I think thats just a generic "this machine has rebooted after a sudden shutdown" message.

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• Kill xserver from command line (init 3/5 does not work)

  - by Richard Martinez

  I'm running Linux Mint 10, although I've had this same issue with other variants of Linux. I've been told/found while researching that if the X server hangs or otherwise errors, one can drop to a root prompt, usually at another tty, and execute init 3 (to drop to single user mode) and then init 5 to return to the default, graphical session. Needless to say, I've tried this before in multiple configurations on multiple machines to no avail. The only feedback I receive form executing those two commands is a listing of VMWare services (from a kernel module) that are stopped and then restarted. Note: If I run startx (either before or after init 3), then I am told that the xserver is still running and that I should remove /tmp/.X0-lock. Having tried that, it removes that error message, but claims that the xserver cannot be attached as another instance is running. How do I kill the xserver completely? Can I killall some process name?

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• Weird RAM Upgrade Experience

  - by Axel Isouard

  I have a laptop, HP EliteBook 8540p having originally 4GB RAM and I've recently bought Corsair Value Select SO-DIMM 16 Go (2x 8 Go) DDR3 1333 MHz. It fits the required RAM specifications perfectly, and once I've inserted them, the BIOS recognizes the memory correctly, but my linux Gentoo running on kernel 3.1.6 SMP x86_64 crashes immediately when I'm running an app which consumes a lot of memory. The laptop crashes as if there's no more battery left, when the memory reaches at least 6000MB ram. Windows 7 doesn't want to run anymore, it shows a blue screen with the IRQ LESS OR EQUAL error if I set 8GB, and it doesn't boot at all if I set 16GB. Is there something I could do to fix this please ?

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• slow disk writes between host and guest

  - by Jure1873

  I've got a ubuntu (server kernel) on a amd x4, 4gb ram, 2x seagate sata 1 tb disks for testing virtual machines and the write performance is very slow. The two disks are in a software raid1 array, one small boot ext3 partition, 10gb system partition and the rest is a xfs partition (about 980) gb for data (virtual machines). If I'm copying files from the virtual machine to the host with rsync or scp the copy frequently stalls or goes at about 1mb/s. What's wrong? I've tried disabling barriers on xfs, increased logbufs, allocsize, but it seems nothing helps. The strange thing is that await (for example during copying) for sda is usually under 100, while for sdb is around 400. Any ideas on what could be wrong / what could I do to improve this setup?

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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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• debian dependencies (libssl-dev and libncurses5)

  - by RubyFreak

  I'm trying to install under RVM the Ruby Enterpise (REE) under debian My debian is squeeze (uname -r) 2.6.18-194.26.1.el5.028stab070.14xen i did try to install ree but it complains that it is missing libssl-dev and libreadline5-dev. I did update my lenny to squeeze, but i didn't update the kernel, since its a production server. The operational system is already updated and upgraded sources.list: deb http://ftp.de.debian.org/debian/ squeeze main contrib non-free deb-src http://ftp.de.debian.org/debian/ squeeze main contrib non-free deb http://security.debian.org/ squeeze/updates main deb-src http://security.debian.org/ squeeze/updates main I did try to install it using the following command: apt-get install libssl-dev libreadline5-dev But unfortunately i'm getting the following problems: The following packages have unmet dependencies: libreadline5-dev: Depends: libncurses5-dev but it is not going to be installed libssl-dev: Depends: libssl0.9.8 (= 0.9.8o-4squeeze1) but 0.9.8o-6 is to be installed E: Broken packages I was thinking to reinstall those packages and install again, but it has too many dependencies, and it is a production server, that i would like to know if there is any other way to fix it. Or at least to double check if it is necessary to reinstall both :-/

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• File comparison utility

  - by Night Walker

  Hello all I am looking for compare utility similar for "win merge" or "beyond compare" . That in addition for gui comparison will have api that i will be able to run on my files via my code and see if the files are the same or not and also use it in gui mode to show graphically the differences . Any recommendations ? thanks

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• WCF - In streaming endpoints, do all operation contracts require a stream as a return or parameter f

  - by Tri Q

  Hi all, I wondering if in the same endpoint, which has been set to streamed transport mode, is it required to have all operation contracts in this service to have a stream in the parameter or as the return type for this service to work? In short: Can streamed enabled endpoint contain operation contracts that do not have stream as a parameter or as a return type?

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• How to make softkeyboard candidate view not block application view?

  - by Cedric

  Hi, I am playing with the Demo SoftKeyboard the comes with the Android SDK. In portrait mode when the candidate view is shown, it doesn't move the app up as the default android keyboard does. Hence it covers part of the application view. What should be changed in order to make the candidate view in the demo softkeyboard behave as the default android keyboard does? I've also looked at the source of the android keyboard from git but found nothing related to this behavior.

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• Unable to login to SQL Server + SQL Server Authentication + Error: 18456

  - by Nev_Rahd

  Hello I have created login account on my localhost\sql2008 Server (Eg. User123) Mapped to Database (default) Authentication Mode on SQL Server is set to both (Windows and SQL) But login to SQL Server fails with following message (for User123) Note: Have checked mutliple time that UserName / Password are typed in correctly Error Details: Login failed for user 'User123' (Net.SqlClient Data Provider) Server Name : localhost\sql2008 Error Number: 18456 Severity : 14 State : 1 Line Number : 65536 any help on this please. Thanks

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• Would javascript and similar scripting languages benefit from being strongly typed?

  - by cwap

  Just had my mind going today. I spent some time in IE debug mode, browsing the web as usual, and oh boy do I see many errors :) Most of these errors are because some value are of a different type than expected (at least as far as I interpret the error messages). What are the reasons JavaScript and similar scripting languages aren't strongly typed? Is it just to make the languages "easier" to understand and more accessable, or is the lack of a "compile-time" the real problem?

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• what are the Ways to create a gui to install a java app

  - by scot

  Hi, I have a java web application . Currently the application is installed in a cli mode [on windows/linux /solaris] by running sh or cmd scripts. I would like to create a GUI for the App installation so that user can edit info in gui for the installation. Any pointers/Best practices for developing gui would be helpful. thank you

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• Unable to access internet if wireless enabled

  - by balki

  The following is my route output. eth0 is my wired network and eth1 is my wireless network. Only wired one has access to internet. If I enable wireless, I am not able to access internet, it tries to access via eth1 and I get 404 page of the wireless router. Why does eth1 have higher preference though default is eth0 (link)? [balakrishnan@mylap ~]$ route Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface default 10.26.0.1 0.0.0.0 UG 0 0 0 eth0 10.26.0.0 * 255.255.192.0 U 1 0 0 eth0 link-local * 255.255.0.0 U 1000 0 0 eth0 192.168.1.0 * 255.255.255.0 U 9 0 0 eth1

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• 32bit to 64bit sql server 2008 database conversion

  - by Eric

  We are in the process of moving databases from older 32 bit hardware running sql 2005 to newer hardware with sql 2008 64 bit. My question is if the database is automatically converted to 64bit after it is reattached on the new server or if it is running in 32bit mode on a 64bit instance. Is there a way to tell?

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• Is paravirtualization evil?

  - by Daniel

  I have an VMWare ESX Server v3.5 with a few virtualized Debian Lenny VMs (kernel 2.6.22 with vmi) running Apache Tomcat 5.5. I enabled paravirtualization, and Disk IO increased from about 240MB/s to 380MB/s, making me a happy admin. The problem now is that my apache tomcat becomes deadlocked during startup, running with 200% CPU (I have 2 CPUS assigned to the VM), and don't know how to get both: A stable system and a fast system. I somewhere heared that paravirtualization is legacy anyway and won't be available on newer ESX servers. Is there a replacement for this seemingly performance-improving option, or is it discontinued becauses it is just unstable? What is the state of paravirtualization? Should I ignore it completely? Thanks for all answers in advance.

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• How to determine the current view bounds in split view of Ipad App?

  - by Mahesh

  Hello friends, I have tried following code to determine current view bounds in shouldAutoRotate.. fn UIViewController *temp1 = [appDelegate.splitViewController.viewControllers objectAtIndex:1]; float screenwidth = temp1.view.bounds.size.width; float screenheight = temp1.view.bounds.size.height; bt actually when u rotate from one mode to another, it provides the bound values of old one insted the fresh bound values..? Any one know that how to achieve it?

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• How can I display the camera view in the main window in real time?

  - by Mongrel Warfare

  I'm trying to make an augmented reality application with a waypoint structure, like Yelp, and I'm wondering how to set up my main view so that it displays the camera view on the whole screen. I've heard of using the UIImagePickerController Class, but I'm unsure how to manipulate the code so that it doesn't actually take a picture, but just stays in the view mode. Any help would be appreciated, thanks!

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• Bitmap as button?

  - by Hwang

  How to set a bitmap as a button so that i can apply button mode and mouse-event stuff on it, without adding the bitmap to a Movie Clip? var bmpFull=new Bitmap(event.currentTarget.content.bitmapData); bmpFull.smoothing=true; bmpFull.name="photo"; bmpFull.alpha=0; //fullMC.buttonMode=true; fullMC.addChild(bmpFull);

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