Compiz uses 100% CPU when desktop is locked
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
compiz (Ubuntu) |
Confirmed
|
High
|
Unassigned |
Bug Description
Tested on three different machines upgraded to Ubuntu 15.10 recently. All of them are 32 bit systems, two of them are intel based integrated GPU (on of them is notebook) with intel CPU, and one is AMD APU equipped machine with the binary driver (so because of this, I don't think it's a video driver related issue). The problem: I've noticed that after locking the screen the fan of the notebook starts to produce a louder noise, typical sign of high CPU usage. After logging in into the machine via ssh from another one, I found that compiz uses 100% CPU, but after unlock the CPU usage drops below 1%. Then I noticed the same with two desktop machines, the same: 100% used CPU by compiz when locked. It's really annoying since it didn't happen with the previous Ubuntu release, and it creates significant noise by the fans, and of course - I guess - using more energy than it should.
ProblemType: Bug
DistroRelease: Ubuntu 15.10
Package: compiz 1:0.9.12.
ProcVersionSign
Uname: Linux 4.2.0-18-generic i686
.tmp.unity.
ApportVersion: 2.19.1-0ubuntu4
Architecture: i386
CompizPlugins: No value set for `/apps/
CompositorRunning: compiz
CompositorUnred
CompositorUnred
CurrentDesktop: Unity
Date: Sat Nov 14 21:53:55 2015
DistUpgraded: 2015-10-18 23:18:25,282 INFO cache.commit()
DistroCodename: wily
DistroVariant: ubuntu
DkmsStatus:
virtualbox, 5.0.4, 4.2.0-17-generic, i686: installed
virtualbox, 5.0.4, 4.2.0-18-generic, i686: installed
GraphicsCard:
Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller [8086:0116] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:21dd]
InstallationDate: Installed on 2012-03-03 (1351 days ago)
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
MachineType: LENOVO 5016NW6
PackageArchitec
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: compiz
UpgradeStatus: Upgraded to wily on 2015-10-18 (26 days ago)
dmi.bios.date: 11/04/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 8GET38WW (1.15 )
dmi.board.name: 5016NW6
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 5016NW6
dmi.product.
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.12.
version.libdrm2: libdrm2 2.4.64-1
version.
version.
version.
version.
version.
version.
version.
version.
xserver.bootTime: Fri Nov 13 17:02:38 2015
xserver.configfile: default
xserver.errors:
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
product id 9196
vendor AUO
xserver.version: 2:1.17.2-1ubuntu9
Status changed to 'Confirmed' because the bug affects multiple users.