Using nouveau, x.org suddenly uses 100% cpu

[Asraniel]

Binary package hint: xorg

While using kubuntu with nouveau (with or without libgl1-mesa-dri-experimental installed), suddenly x.org starts to use 100% cpu and the desktop freezes. i can still move the mousepointer, but not click anymore.

Using the nvidia binary driver this does not happen.

I think the common thing i found with the "crashes" was that i was doing some heavy IO operation. Once it was copying large amount of files, and the other 2 times i was burning a dvd.

I hope this can get fixed. Kde with the binary drivers is really slow after an hour (with nouveau it really flies!).

thank you for your time. If any information is needed, please ask, i can use a CLI ;)

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: xorg 1:7.5+6ubuntu3
ProcVersionSignature: Ubuntu 2.6.35-22.34-generic 2.6.35.4
Uname: Linux 2.6.35-22-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 260.19.06 Mon Sep 13 04:29:19 PDT 2010
 GCC version: gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5)
Architecture: amd64
Date: Sun Oct 17 22:58:53 2010
DkmsStatus: nvidia-current, 260.19.06, 2.6.35-22-generic, x86_64: installed
InstallationMedia: Kubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: LENOVO 7663PJG
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.35-22-generic root=UUID=0b2144d0-2e5e-4260-a682-27df1f1bc47b ro quiet splash
ProcEnviron:
 LANGUAGE=
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: xorg
Symptom: display
dmi.bios.date: 11/14/2008
dmi.bios.vendor: LENOVO
dmi.bios.version: 7LETC5WW (2.25 )
dmi.board.name: 7663PJG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7LETC5WW(2.25):bd11/14/2008:svnLENOVO:pn7663PJG:pvrThinkPadT61:rvnLENOVO:rn7663PJG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 7663PJG
dmi.product.version: ThinkPad T61
dmi.sys.vendor: LENOVO
peripherals: Error: [Errno 2] No such file or directory
system:
 distro: Ubuntu
 codename: maverick
 architecture: x86_64
 kernel: 2.6.35-22-generic

[Asraniel (asraniel)]

I would like to add that i can login to my computer over ssh while the 100% occurs. I could do some investigation, if i knew how to do to (attaching gdb to x.org? i would need some help about how to do that).

[Alvin (alvind)]

I can confirm this behaviour on Lucid.

[bugbot (bugbot)]

Hey Asraniel,

Hi, have you had a chance to test if this bug is still present in natty?

If it does (and if you're the original reporter), please boot into natty
and run the command:

  apport-collect <bug-number>

which will update the bug with fresh logs and tag the bug as affecting
natty. (It is best to run this right after reproducing the problem.)

[bugbot (bugbot)]

We're closing this bug since it is has been some time with no response from the original reporter. However, if the issue still exists please feel free to reopen with the requested information. Also, if you could, please test against the latest development version of Ubuntu, since this confirms the bug is one we may be able to pass upstream for help.