Ubuntu
xorg-server package

  1. Bug #294972 (xorg-high-cpu)
  2. Comment #22

Comment 22 for bug 294972

Revision history for this message
LinuxKrn (bugs-linuxlogin) wrote : Re: xorg 10-20% cpu usage after intrepid upgrade, general system sluggishness

I'd also like to add this happens with me as well. I have a high end machine (3.4Ghz CPU, dual SLI 8800 GTX, RAID0 SSD, 4GB RAM) and firefox will cause Xorg to 100% CPU and everything freezes for sometimes as long as 5+ seconds when opening or closing new tabs. Even loading pages feels sluggish or causes freeze.

After GDM log-in, the desktop will also hang for 10+ seconds with only the background image showing. Panels, icons, startup sound, etc. are not loading until many seconds later.

Disabling Compiz doesn't improve things that much. (maybe shaves one second off)

I've tried with SLI enabled and disabled and get same results. It seems to be an issue that happened late with 8.04 after some upgrades, and wasn't fixed/resolved in 8.10. I am not sure, but think it all happened around the xorg 7.3 upgrade time frame.

8.10, kernel 2.6.27-9-generic
NVRM version: NVIDIA UNIX x86 Kernel Module 177.80 Wed Oct 1 14:38:10 PDT 2008
GCC version: gcc version 4.3.2 (Ubuntu 4.3.2-1ubuntu11)