compiz suddenly starts consuming 100% CPU and hangs the whole system
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
compiz (Ubuntu) |
Invalid
|
Undecided
|
Unassigned |
Bug Description
At random times, suddently and without apparent reason, compiz suddently starts consuming 99-100% CPU and makes the whole system unresponsive.
Actually there are TWO BUGS here:
- the fact itself that compiz starts eating up all that CPU (a bug in compiz by definition, whether or not accompanied by a bug in some other piece of the system)
- the fact that this is enough to render the whole system unresponsive. Responsiveness to keyboard and mouse should always have the maximum priority and allow you to, for example, alt-tab and open a terminal, or, if that itself depends on compiz being able to respond, then at least respond to keyboard input in order to do e.g. ctrl+Alt+F1 which lets you open a virtual terminal.
Actually by pressing ctlr+alt+F1 hundreds of time it finally caught one and let me open a virtual terminal, which is how I could figure out it was compiz who was eating 100% CPU.
Also, there should be a way to kill compiz and restart it, shouldn't it?
This has already happened to me a few times.
This may, or may not, be related to #1162568
The differences observed are:
- in this case it is 100% CPU consumption, no high disk I/O; in 1162568 it is massive disk I/O and low/normal CPU activity
- In 1162568 the mere action of switching to the virtual terminal, itself stopped the issue (unless it was a lucky coincidence). In this case it didn't. It just allowed me
ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: compiz 1:0.9.8.6-0ubuntu1
ProcVersionSign
Uname: Linux 3.5.0-27-generic i686
NonfreeKernelMo
.proc.driver.
.proc.driver.
.proc.driver.
NVRM version: NVIDIA UNIX x86 Kernel Module 304.43 Sun Aug 19 20:20:21 PDT 2012
GCC version: gcc version 4.7.2 (Ubuntu/Linaro 4.7.2-2ubuntu1)
.tmp.unity.
ApportVersion: 2.6.1-0ubuntu10
Architecture: i386
CompizPlugins: [core,composite
CompositorRunning: compiz
Date: Sat Apr 6 16:50:40 2013
DistUpgraded: 2013-01-13 11:55:33,566 DEBUG enabling apt cron job
DistroCodename: quantal
DistroVariant: ubuntu
GraphicsCard:
NVIDIA Corporation G84 [GeForce 9500M GS] [10de:0405] (rev a1) (prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device [1043:15d2]
InstallationDate: Installed on 2010-06-23 (1018 days ago)
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
MachineType: ASUSTeK Computer Inc. M51Sn
MarkForUpload: True
PackageArchitec
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=
SourcePackage: compiz
UpgradeStatus: Upgraded to quantal on 2013-01-13 (83 days ago)
dmi.bios.date: 12/24/2007
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 303
dmi.board.
dmi.board.name: M51Sn
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: M51Sn
dmi.product.
dmi.sys.vendor: ASUSTeK Computer Inc.
version.compiz: compiz 1:0.9.8.6-0ubuntu1
version.libdrm2: libdrm2 2.4.39-0ubuntu1
version.
version.
version.
version.
version.
version.
version.
version.
version.
That version has reached EOL since a while, so it will not receive update. If that issue still exist, report again using ubuntu-bug.