compiz team mailing list archive

[Laurent Claessens <moky.math@xxxxxxxxx>]

Public bug reported:

Binary package hint: compiz

My CPU usage of X goes to around 70% and get stuck there at the moment I change of virtual desktop with the Compiz's "wall" effect.
If I goes to tty1 and goes back to the graphical mode (ctrl-alt-f1 - ctrl-alt-f7), the CPU usage of X goes back around 10-15%, which is reasonable.

This phenomenon can be linked to the number of open windows. I performed some tests, no combinations of 2 or 3 of my favourites windows can reproduce the problem.
My favourite windows are
Akregator
Thunderbid 3
Amarok
Boinc
Konqueror
Vim
None of them is able to reproduce the problem alone, but when they are open togheter, I am rapidly stucked at 20%.

It could also linked to the fact to open many windows at the same time.
I am used the morning to open all of them at once in the same time as
Compiz and Emerald (via a bash script). When I open them one by one, it
takes longer to trigger bug.

As an example, I typeset this bug report in Vim, opening all my programes one by one without triggering the bug. Now I got the bug exactly when Konqueror opened itself because of ubuntu-bug. 
It seems that the fact to have Konqueror opened in a somewhat complex page is a strong trigger, although it is not 100% reproducible (like this bug report page of newspaper)

What kind of further tests do you suggest me to perform ?

I'm using a Nvidia card with the driver recommended by jockey-kde, and Compiz with 5*5 virtual desktops (wall)
I do not have the issue on my laptop : same OS, same windows open, but Intel card.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: compiz 1:0.8.4-0ubuntu15
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
NonfreeKernelModules: nvidia
Architecture: i386
CompizPlugins: [core,ccp,move,resize,place,decoration,dbus,gnomecompat,imgjpeg,video,svg,regex,workarounds,text,session,splash,png,resizeinfo,animation,wall,shelf,wobbly,fade,scale,expo,scaleaddon,group,staticswitcher,bench]
Date: Thu Apr 29 16:27:31 2010
InstallationMedia: Kubuntu 10.04 "Lucid Lynx" - Beta i386 (20100317)
MachineType: Dell Inc. Inspiron 530
PackageArchitecture: all
PciDisplay: 01:00.0 VGA compatible controller [0300]: nVidia Corporation G86 [GeForce 8300 GS] [10de:0423] (rev a1)
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic root=UUID=1572a37a-f8db-4fa7-893c-728f5bb1c5fe ro quiet splash
ProcEnviron:
 LANGUAGE=
 PATH=(custom, user)
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
RelatedPackageVersions:
 xserver-xorg 1:7.5+5ubuntu1
 libgl1-mesa-glx 7.7.1-1ubuntu2
 libdrm2 2.4.18-1ubuntu3
 xserver-xorg-video-intel 2:2.9.1-3ubuntu5
 xserver-xorg-video-ati 1:6.13.0-1ubuntu5
SourcePackage: compiz
dmi.bios.date: 07/12/2007
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.0.3
dmi.board.name: 0RY007
dmi.board.vendor: Dell Inc.
dmi.board.version: ���
dmi.chassis.type: 3
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: OEM
dmi.modalias: dmi:bvnDellInc.:bvr1.0.3:bd07/12/2007:svnDellInc.:pnInspiron530:pvr:rvnDellInc.:rn0RY007:rvr:cvnDellInc.:ct3:cvrOEM:
dmi.product.name: Inspiron 530
dmi.sys.vendor: Dell Inc.
system: distro = Ubuntu, architecture = i686, kernel = 2.6.32-21-generic

** Affects: compiz (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 lucid

-- 
X takes 70% of CPU when changing virtual desktop (Nvidia, compiz)
https://bugs.launchpad.net/bugs/571731
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