Xorg 100% CPU with nvidia driver

mbreuer · 10-30-09, 01:42 PM

I've just switched over to the nvidia driver from nouvou. Everything is working, however Xorg CPU utilization is 100% of a single core (fortunately I'm running on an I7 so I can still function).

Some notes that might help...

X utilization starts normal but hits 100% after about one or two minutes (varies).
This happens even when not logged in via X (i.e., Login screen is up - I see the 100% via ssh... and the sound of the cpu fan spooling up).

If I kill X, things go back to normal for a while.
I can kill X and keep it dead and log in remotely (XDMCP) and don't see the utilization.

I've gone through this board and fixed everything I can see (selinux, etc.). I don't have any of the errors I'm told to look for.

I've attached the requisite bug report file that seems to have all requested data.

Meanwhile, I'll probably go to runlevel 3 for a while.

mbreuer · 11-01-09, 11:42 AM

I think I've solved this... after much searching on the web, I found a reference to Device options "UseEvents" "on";

That seems to have done the trick.

Update: spoke too soon... just took a bit longer this time to hit 100%

update 2: actually seems to be fixed with UseEvents. Spiked for a bit then settled down. Now seems OK whether logged in or not.

mbreuer · 11-23-09, 11:23 PM

Ok - I fell back to the nouveau driver and still had issues. Today I came across this: https://bugzilla.redhat.com/show_bug.cgi?id=475890

Long story short: X was moved from vt7 to vt1. Init is running a tty on tty1. That is what's been causing CPU utilization issues for xorg of late (at least for me).

I've attached a small patch to the above mentioned bug report that solves my issue ... although I haven't tried yet with the proprietary driver (as I moved to 2.6.32rc8 for other reasons).

11-01-09, 11:42 AM	#2
mbreuer Registered User Join Date: Feb 2005 Posts: 12	Re: Xorg 100% CPU with nvidia driver I think I've solved this... after much searching on the web, I found a reference to Device options "UseEvents" "on"; That seems to have done the trick. Update: spoke too soon... just took a bit longer this time to hit 100% update 2: actually seems to be fixed with UseEvents. Spiked for a bit then settled down. Now seems OK whether logged in or not. Last edited by mbreuer; 11-01-09 at 04:44 PM. Reason: Never Mind

11-23-09, 11:23 PM	#3
mbreuer Registered User Join Date: Feb 2005 Posts: 12	Re: Xorg 100% CPU with nvidia driver (solved?) Ok - I fell back to the nouveau driver and still had issues. Today I came across this: https://bugzilla.redhat.com/show_bug.cgi?id=475890 Long story short: X was moved from vt7 to vt1. Init is running a tty on tty1. That is what's been causing CPU utilization issues for xorg of late (at least for me). I've attached a small patch to the above mentioned bug report that solves my issue ... although I haven't tried yet with the proprietary driver (as I moved to 2.6.32rc8 for other reasons).