Xorg and compiz uses is above 15% even in idle condition.

[Suskam]

I am using Ubuntu 14.04 on HP workstation with Nvidia GetForce 9600GT GPU card and latest drivers..

I've been trying to figure out what is causing Xorg and Compiz to frequently come close to maxing out my CPU usage for weeks now. Essentially, during normal use, both processes will fluctuate between using next to no CPU to all of my CPU. Does anyone know what could be causing this issue, and how I could go about fixing it?

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: compiz 1:0.9.11+14.04.20140409-0ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-36.63-generic 3.13.11.6
Uname: Linux 3.13.0-36-generic x86_64
NonfreeKernelModules: nvidia
.proc.driver.nvidia.registry: Binary: ""
.proc.driver.nvidia.version:
 NVRM version: NVIDIA UNIX x86_64 Kernel Module 340.32 Tue Aug 5 20:58:26 PDT 2014
 GCC version: gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)
ApportVersion: 2.14.1-0ubuntu3.2
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Wed Oct 8 14:04:54 2014
DistUpgraded: Fresh install
DistroCodename: trusty
DistroVariant: ubuntu
GraphicsCard:
 NVIDIA Corporation G94 [GeForce 9600 GT] [10de:0622] (rev a1) (prog-if 00 [VGA controller])
   Subsystem: ASUSTeK Computer Inc. Device [1043:82fc]
InstallationDate: Installed on 2014-07-04 (96 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: Hewlett-Packard HP xw4600 Workstation
PackageArchitecture: all
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-36-generic root=UUID=e9b738ea-3022-4ef9-85df-23d3b8fa77cc ro quiet splash
SourcePackage: compiz
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/19/2009
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 786F3 v01.16
dmi.board.name: 0AA0h
dmi.board.vendor: Hewlett-Packard
dmi.chassis.type: 6
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr786F3v01.16:bd02/19/2009:svnHewlett-Packard:pnHPxw4600Workstation:pvr:rvnHewlett-Packard:rn0AA0h:rvr:cvnHewlett-Packard:ct6:cvr:
dmi.product.name: HP xw4600 Workstation
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz 1:0.9.11+14.04.20140409-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.52-1
version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.1
version.nvidia-graphics-drivers: nvidia-graphics-drivers N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
xserver.bootTime: Fri Sep 26 09:31:36 2014
xserver.configfile: default
xserver.devices:
 input Power Button KEYBOARD, id 6
 input Power Button KEYBOARD, id 7
 input LiteON HP Basic USB Keyboard KEYBOARD, id 8
 input HP HP USB Laser Mouse MOUSE, id 9
 input HP WMI hotkeys KEYBOARD, id 10
xserver.errors: open /dev/fb0: No such file or directory
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:

xserver.version: 2:1.15.1-0ubuntu2

[Seth Arnold (seth-arnold)]

It appears you've got some AppArmor policy denials in CUPS; would you mind opening another bug for that, "ubuntu-bug cups", and please mention this in the bug text:

[1053073.016844] type=1400 audit(1412769752.904:40591): apparmor="DENIED" operation="open" profile="/usr/sbin/cups-browsed" name="/etc/cups/lpoptions" pid=1000 comm="cups-browsed" requested_mask="r" denied_mask="r" fsuid=0 ouid=0

Thanks!

[Seth Arnold (seth-arnold)]

Thanks for taking the time to report this bug and helping to make Ubuntu better. We appreciate the difficulties you are facing, but this appears to be a "regular" (non-security) bug. I have unmarked it as a security issue since this bug does not show evidence of allowing attackers to cross privilege boundaries nor directly cause loss of data/privacy. Please feel free to report any other bugs you may find.

[Suskam (sushilbioinfo)]

Thanks a lot. I have created another bug for AppArmor policy denial here:

https://bugs.launchpad.net/ubuntu/+source/cups/+bug/1379368