[Bug 550801] Re: Xorg uses 35-55% CPU all time and fan runs continually

Alkis Georgopoulos alkisg at gmail.com
Tue Mar 30 11:44:48 UTC 2010

I've seen this problem when both iTalc and vino-server are installed,
because they're both trying to use port 5900.

In Karmic we fixed the iTalc packaging so that it uses a different port, if 5900 is in use.
So I'm guessing that iTalc (==the ica process) starts first, sees that 5900 is free, uses it, and then vino-server tries to use the same port blindly without checking, and is causing the 100% xorg usage (you probably have a multi core system, that's why you're seeing less than 100%).

If my guess is correct, then this bug should probably be filed against
vino-server instead, as iTalc is checking to see if the port is in use,
while vino-server doesn't.

** Changed in: italc (Ubuntu)
       Status: New => Incomplete

Xorg uses 35-55% CPU all time and fan runs continually
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Status in “italc” package in Ubuntu: Incomplete

Bug description:
After upgrade from Karmic to Lucid, the fan runs continually and the Xorg process eats a lot of CPU.

I use nvidia-current video driver.

Turning of compiz hasn't any effect.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: xserver-xorg-core 2:1.7.6-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-17.26-generic
Uname: Linux 2.6.32-17-generic i686
NonfreeKernelModules: nvidia wl
Architecture: i386
CheckboxSubmission: 93deb082c181cf8fd095418f8f3e1d61
CheckboxSystem: e704f33cc0866ff0f0256a33de39ea1c
Date: Mon Mar 29 12:02:10 2010
 bcmwl,, 2.6.32-16-generic, i686: installed 
 bcmwl,, 2.6.32-17-generic, i686: installed 
 nvidia-173, 173.14.22, 2.6.32-17-generic, i686: installed 
 nvidia-current, 195.36.15, 2.6.32-17-generic, i686: installed
ExecutablePath: /usr/bin/Xorg
 Bus 002 Device 002: ID 08ff:2580 AuthenTec, Inc. AES2501 Fingerprint Sensor
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 002: ID 04f2:b015 Chicony Electronics Co., Ltd VGA 24fps UVC Webcam
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Hewlett-Packard HP Pavilion dv6500 Notebook PC
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-17-generic root=UUID=f361096d-a83c-4a64-9e04-3c8e8ea1a058 ro quiet splash
 PATH=(custom, no user)
SourcePackage: xorg-server
dmi.bios.date: 11/24/2008
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.31
dmi.board.name: 30D0
dmi.board.vendor: Quanta
dmi.board.version: 85.26
dmi.chassis.type: 10
dmi.chassis.vendor: Quanta
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.31:bd11/24/2008:svnHewlett-Packard:pnHPPaviliondv6500NotebookPC:pvrRev1:rvnQuanta:rn30D0:rvr85.26:cvnQuanta:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv6500 Notebook PC
dmi.product.version: Rev 1
dmi.sys.vendor: Hewlett-Packard
 distro:             Ubuntu
 codename:           lucid
 architecture:       i686
 kernel:             2.6.32-17-generic

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