Red Hat Bugzilla – Bug 176994
sound apps cause X server to use 100% CPU
Last modified: 2007-11-30 17:11:20 EST
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User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.7.12) Gecko/20050922 Fedora/1.0.7-1.1.fc4 Firefox/1.0.7
Description of problem:
I have a TYAN S2882-D mobo with two Opteron 250 CPUs, total of 4 Gigs of RAM, 2 Gigs per processor.
The video card is a PNY Nvidia FX 5500 (PCI bus, not AGP if that matters).
I have tried two sound cards, an Ensoniq 1370 and a Creative Audigy 2 ZS. The problem is the same for either sound card, and doesn't seem to be slot dependent.
If not using sound, the system runs for a day or more. I start using audacity, recording or playing back, and after a half minute or so, the entire display freezes up. I can still ping the box, and an ssh from another machine shows the Xserver at 99.9% CPU. If I kill -9 the Xserver, the box restarts X and I can log in.
It does the same thing with gcdmaster playing back a wav file. So it looks to be an interaction between X and a sound card.
I did an strace on the Xserver, but I'm not sure it is meaningful - it reports
a buffer overflow in select, which I've seen listed in another bug as due to tracing a 32-bit app on a 64-bit system. I'll attach the trace anyway in case it is helpful.
I can reproduce this 100% of the time on this machine, and I will gladly capture any other data anyone might like to see.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
Actual Results: Screen freezes, Xserver goes to 99.9% CPU
Expected Results: No freeze
Created attachment 122806 [details]
straces of the Xserver
I tried installing the proprietary nvidia driver:
and the problem completely disappears. So, I am currently suspecting the xorg
Should we persue this bug here, or would you prefer that I move the bug over to
the xorg site?
(In reply to comment #2)
> I tried installing the proprietary nvidia driver:
> and the problem completely disappears. So, I am currently suspecting the xorg
> nv driver.
> Should we persue this bug here, or would you prefer that I move the bug over to
> the xorg site?
Please file in X.Org bugzilla, and we'll track the issue there. Thanks in
Ok - it is filed in X.org. Here is a link:
From upstream bug report:
------- Additional comment #2 from Steve Falco on 2006-03-30 08:04 [reply]
Installed the latest Fedora Core 5, with Xorg 7.0.0. This bug appears to be
fixed in this version.
Closing bug as fixed in "CURRENTRELEASE" of FC5