xorg hogs too much memory after resuming from lock screen causing the desktop to be unresponsive

[Guruprasad]

Binary package hint: xorg

After a fresh boot and relogging in after locking the screen for some time, the xorg takes up too much memory and causes the other applications to be drastically slowed down even on my machine with 2GB RAM. My laptop has Nvidia 8600 M GS graphics card and uses the proprietary driver for the same and the visual effects are enabled to a moderate level

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg 1:7.5+5ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
Date: Tue Jun 1 19:55:38 2010
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: Hewlett-Packard HP Pavilion dv9700 Notebook PC
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=28bee73b-ffd3-4ead-88c5-a92b2ac39355 ro quiet splash
ProcEnviron:
 LANG=en_IN
 SHELL=/bin/bash
SourcePackage: xorg
dmi.bios.date: 11/25/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.59
dmi.board.name: 30CB
dmi.board.vendor: Quanta
dmi.board.version: 79.2E
dmi.chassis.type: 10
dmi.chassis.vendor: Quanta
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.59:bd11/25/2008:svnHewlett-Packard:pnHPPaviliondv9700NotebookPC:pvrRev1:rvnQuanta:rn30CB:rvr79.2E:cvnQuanta:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv9700 Notebook PC
dmi.product.version: Rev 1
dmi.sys.vendor: Hewlett-Packard
glxinfo: Error: [Errno 2] No such file or directory
system:
 distro: Ubuntu
 codename: lucid
 architecture: i686
 kernel: 2.6.32-22-generic

[Guruprasad (lgp171188)]

Is it surely a bug in nvidia drivers and not in xorg?

[Guruprasad (lgp171188)]

Will try to see if this bug exists when the Desktop effects are disabled.

[John Baptist (jepst79)]

Does this bug happen after locking the screen, or only after resume from suspend?

I have similar performance issues after resume from suspend, in which Xorg always uses 10-15% of CPU (on a quadcore) and uses more and more memory and the performance of the system as a whole is degraded, resulting in a jerky mouse and slow loading of programs. I didn't have tihs problem under Jaunty. I can include logs, if helpful. This could be an nvidia issue, or an Xorg issue, but it doesn't happen on my system with Intel graphics.

Do we have the same bug?

[John Baptist (jepst79)]

By the way, this bug definitely does not happen using nouveau drivers and metacity. Also, I am pretty sure it doesn't happen on kernel 2.6.32-21-generic. Can you try this kernel and see if you can reproduce it?

[dino99 (9d9)]

That version is no more supported; please open a new bug report if the actual archive found version also has the same issue.