Results 1 to 6 of 6

Thread: 12.04 xorg at 100% cpu

  1. #1
    Join Date
    Oct 2008
    Beans
    348

    12.04 xorg at 100% cpu

    I have two computers running ubuntu. Both have the same problem. For no abvious reason when the comnputer is being use the processs Xorg jumps to 100% cpu. At this point I am not able to stop it.

    kill -9 Xorg-id
    or
    service lightdm stop
    do not work for user root.

    It is not likely to be a video card related. one computer has HD 6850 and the other one has nvidia GTS 240. The first is core i7-950 and the second is core i7-920.

    The only thing that works is restarting the computer the computer with the nvidia card, by looging remotely from another computer. The computer with the ATI cards needs a hard rest.

    Both computers had no problems with ubuntu 11.10.

    It looks like a bug that someone should have reported. I was not able to find that.

    Did anyone experience that or have a workaround.

    Thanks
    Last edited by odror; May 22nd, 2012 at 05:06 AM.

  2. #2
    Join Date
    Feb 2006
    Location
    Poznań
    Beans
    41
    Distro
    Ubuntu 12.10 Quantal Quetzal

    Re: 12.04 xorg at 100% cpu

    Although this is appearing on both computers, you may want to try to fix the nVidia one first. I was having a similar problem (as well as "tearing" and other graphic corruption) until I upgraded the nVidia driver to the newest (295.53). To do this, follow the instructions @ noobslab. If this fixes the problem on your nVidia computer, there may be a similar issue for your other computer.

    Peace,
    Paul

    P.S. I believe that your card is supported, but you will want to check on nVidia's driver page.

  3. #3
    Join Date
    Oct 2008
    Beans
    348

    Re: 12.04 xorg at 100% cpu

    Quote Originally Posted by p-dh View Post
    Although this is appearing on both computers, you may want to try to fix the nVidia one first. I was having a similar problem (as well as "tearing" and other graphic corruption) until I upgraded the nVidia driver to the newest (295.53). To do this, follow the instructions @ noobslab. If this fixes the problem on your nVidia computer, there may be a similar issue for your other computer.
    The nvidia fix seems to work so far (24 hours).

    The ATI issue is probably a diffrent issue. I cannot replicate the problem. It happen it least twice before. In the ATI machine the last thing that I did was Ctrl+Alt+F1.

  4. #4
    Join Date
    Feb 2006
    Location
    Poznań
    Beans
    41
    Distro
    Ubuntu 12.10 Quantal Quetzal

    Re: 12.04 xorg at 100% cpu

    When you get the console with the Ctrl-Alt-F1, login,run top and see what is taking up your CPU. Does it show xorg or compiz? If you log in with 2d, do you have a problem?
    BTW, I found this post on AskUbuntu: GUI freezes after upgrading from 11.10 to 12.04 on ATI Radeon HD 6850. Does that sound like what you're experiencing?

    Paul

  5. #5
    Join Date
    Oct 2008
    Beans
    348

    Re: 12.04 xorg at 100% cpu

    Quote Originally Posted by p-dh View Post
    When you get the console with the Ctrl-Alt-F1, login,run top and see what is taking up your CPU. Does it show xorg or compiz? If you log in with 2d, do you have a problem?
    BTW, I found this post on AskUbuntu: GUI freezes after upgrading from 11.10 to 12.04 on ATI Radeon HD 6850. Does that sound like what you're experiencing?

    Paul
    I am using KDE. it shows Xorg at 100% cpu for one of the cores. I have reported a separate bug about compiz at 100% cpu when using Unity-3d, while the display is sleeping, Or for gnome 3 with gnome-shell at a 100% cpu, while the display is sleeping. I had to login from another computer using ssh to confim these bugs. This sleeping display bug does not apply to KDE.

  6. #6
    Join Date
    Apr 2007
    Beans
    2,601
    Distro
    Ubuntu

    Re: 12.04 xorg at 100% cpu

    Same issue here on 5 July, with Ubuntu and Unity, Intel graphics:

    00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

    Computer just feels somewhat sluggish: fortunatelly it is a fast one.

    top:

    Code:
    top - 12:54:28 up  4:03,  1 user,  load average: 1.28, 1.06, 0.97
    Tasks: 183 total,   1 running, 182 sleeping,   0 stopped,   0 zombie
    Cpu(s): 10.9%us, 12.8%sy,  0.0%ni, 76.1%id,  0.2%wa,  0.0%hi,  0.0%si,  0.0%st
    Mem:   8055676k total,  4712144k used,  3343532k free,   238644k buffers
    Swap:  9764860k total,        0k used,  9764860k free,  3284152k cached
    
      PID USER         PR  NI  VIRT  RES  SHR S %CPU %MEM    TIME+  COMMAND            
     1222 root         20   0  283m  29m 6104 S   77  0.4  12:38.42 Xorg               
     5073 vanadium     20   0 1379m 175m  76m S   13  2.2   0:54.04 soffice.bin        
     1820 vanadium     20   0 1493m 123m  41m S    3  1.6   4:40.38 compiz

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •