** Tags removed: lucid
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/1087535
Title:
[i915] [regression] Xorg excessive use of CPU (after update from lucid
to precise)
Status in “xserver-xorg-video-intel” package in Ubuntu:
New
Bug description:
I updated from lucid to precise about three weeks ago, hoping that the
major wrinkles would have been ironed out by now. Unfortuantely, that
isn't so. One very major complication for me is that over time X will
use up vast amounts of CPU cycles, usually reaching 100% on one core
after about 24 hours of uptime. The computer is an ASUS 1001P with
intel i915 graphics.
Obviously, the whole system becomes very sluggish, fans running on
high speed when X grabs a full core for itself. After closing all
programs, X release the grip somewhat but keeps oscillating between 20
and 60% load on a single core with essentially no other programs
running.
I am aware this may very well be a bug in another package and not in X
itself. So far I can't pinpoint anything, except that it seems that
Firefox with many tabs open seems to be an accelerating factor to
deteriorate the situation. I carried over the Firefox package from
lucid to precise and updated from version 15 to 17 only yesterday. I
pin Firefox because the recent release cycle is exposing me to too
many regressions. I hoped the problem with X might go away by going
to 17 now but that's not the case. Since version 15 acted fine in
lucid and a precise installation with the same package misbehaved this
seems to indicate that Firefox might not be the culprit (although I
wouldn't yet rule it out completely).
The problem occurs with both the lucid kernel and the precise kernel,
although I felt it might have taken longer with the lucid kernel. I
believe I was able to verify this with the mainline kernel as well but
can't be sure anymore. Last time I tried mainline it would only run
at 800x600. That was unusable for normal work and therefore I didn't
keep the machine up long enough for the problem to occur that time.
Since it takes a while for the regression to rear its head, I'm afraid
I can't test with a live CD or a later relase, I need my computer.
I'm willing to do gdb or git bisection work, but I'm somewhat
inexperienced how to get X to run inside gdb. Some guidance would be
appreciated.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.2
ProcVersionSignature: Ubuntu 3.2.0-34.53-generic 3.2.33
Uname: Linux 3.2.0-34-generic i686
.tmp.unity.support.test.0:
ApportVersion: 2.0.1-0ubuntu15
Architecture: i386
CompizPlugins:
[core,composite,opengl,compiztoolbox,decor,mousepoll,screenshot,regex,move,snap,gnomecompat,wall,vpswitch,place,session,resize,grid,animation,imgpng,expo,ezoom,workarounds,fade,scale,unityshell]
CompositorRunning: None
Date: Fri Dec 7 02:57:22 2012
DistUpgraded: 2012-11-17 18:58:48,482 DEBUG failed to SystemUnLock() (E:Not
locked)
DistroCodename: precise
DistroVariant: ubuntu
EcryptfsInUse: Yes
ExtraDebuggingInterest: Yes, even including gdb or git bisection work if
needed
GraphicsCard:
Intel Corporation N10 Family Integrated Graphics Controller [8086:a011]
(prog-if 00 [VGA controller])
Subsystem: ASUSTeK Computer Inc. Device [1043:83ac]
Subsystem: ASUSTeK Computer Inc. Device [1043:83ac]
MachineType: ASUSTeK Computer INC. 1001P
MarkForUpload: True
ProcEnviron:
TERM=xterm
PATH=(custom, user)
LANG=de_DE.UTF-8
LC_MESSAGES=C
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-34-generic
root=/dev/mapper/hostname-root ro quiet splash acpi_osi=Linux backlight=vendor
i915.i915_enable_fbc=1 drm.vblankoffdelay=1
SourcePackage: xserver-xorg-video-intel
UpgradeStatus: Upgraded to precise on 2012-11-17 (19 days ago)
dmi.bios.date: 06/23/2010
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1202
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1005P
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1202:bd06/23/2010:svnASUSTeKComputerINC.:pn1001P:pvrx.x:rvnASUSTeKComputerINC.:rn1005P:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1001P
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.
version.compiz: compiz 1:0.9.7.8-0ubuntu1.4
version.libdrm2: libdrm2 2.4.32-1ubuntu1
version.libgl1-mesa-dri: libgl1-mesa-dri 8.0.4-0ubuntu0.2
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 8.0.4-0ubuntu0.2
version.xserver-xorg-core: xserver-xorg-core 2:1.11.4-0ubuntu10.8
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.0-0ubuntu1.2
version.xserver-xorg-video-ati: xserver-xorg-video-ati
1:6.14.99~git20111219.aacbd629-0ubuntu2
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.17.0-1ubuntu4.2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau N/A
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