Compiz eats around 15% CPU when idle
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
compiz (Ubuntu) |
Confirmed
|
Undecided
|
Unassigned |
Bug Description
Filing this as a new bug as per recommendation in this comment: https:/
I'm using Lenovo X1 Carbon with Ubuntu 13.04 installed, external 20" monitor connected via Mini DisplayPort (both displays are on and in use).
htop shows that compiz is using around 15% of CPU when the PC is idle.
Open applications:
* Chrome with many tabs
* Thunderbird
* Skype
* Nautilus
* Terminal with htop running
In CCSM->OpenGL, I have 'Sync to VBlank' unticked and 'Texture Filter' set to 'Fast' as advised by many other users.
I am not using an unstable version of compiz.
Will be happy to provide any additional details.
ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: compiz 1:0.9.9~
ProcVersionSign
Uname: Linux 3.8.0-31-generic x86_64
.tmp.unity.
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: amd64
CompizPlugins: No value set for `/apps/
CompositorRunning: compiz
CompositorUnred
CompositorUnred
Date: Sun Oct 20 02:54:38 2013
DistUpgraded: Fresh install
DistroCodename: raring
DistroVariant: ubuntu
DkmsStatus:
i915-3.9-3.8, 0.02, 3.8.0-30-generic, x86_64: installed
i915-3.9-3.8, 0.02, 3.8.0-31-generic, x86_64: installed
vboxhost, 4.2.16, 3.8.0-30-generic, x86_64: installed
vboxhost, 4.2.16, 3.8.0-31-generic, x86_64: installed
EcryptfsInUse: Yes
GraphicsCard:
Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:21f9]
InstallationDate: Installed on 2013-06-11 (130 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MachineType: LENOVO 3444F8U
MarkForUpload: True
PackageArchitec
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/26/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: G6ET90WW (2.50 )
dmi.board.
dmi.board.name: 3444F8U
dmi.board.vendor: LENOVO
dmi.board.version: Win8 Pro DPK TPG
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 3444F8U
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.9~
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.46+
version.
version.
version.
version.
version.
version.
version.
version.
xserver.bootTime: Sun Oct 20 02:46:49 2013
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 898
vendor LGD
xserver.version: 2:1.13.
I did some testing and looks like the cause of this intense CPU usage is Chrome's effect of "flashing" a pinned tab when it's updated (see a short video attached). When I open this tab to make it stop flashing, CPU usage of compiz drops down to 1-2%.
One would think it's a bug in Chrome but I'm not experiencing this issue on another computer running 12.04 - on this machine compiz uses under 1% CPU even when Chrome is open and has a flashing pinned tab. I'll try to do some further investigation and report here.