Red Hat Bugzilla – Bug 476451
X server consumes 100% CPU time and unresponsive from time to time
Last modified: 2010-06-28 06:57:00 EDT
Created attachment 326888 [details]
gdb backtrace collected from system via ssh in during the problem
Description of problem:
X server consumes 100% CPU time, system unresponsive.
Version-Release number of selected component (if applicable):
both from koji
Once so far, but have quite a few when I was using the radeon driver
(see related bug in footnotes)
Steps to Reproduce:
1. normal usage
2. once in a while, system becomes unresponsive, mouse pointer still moves
but screen no longer updates.
can still ssh in, so I have a gdb back trace, (will attach). See also related bug (https://bugzilla.redhat.com/show_bug.cgi?id=472304 )
Created attachment 327395 [details]
same radeonhd version as last, new kernel -159.
Created attachment 327598 [details]
more backtrace -
Happened when I was dragging a gnome term window. I had an impression that it might be about dragging it over the (right) edge on the desktop.
Created attachment 327711 [details]
I think I can reliably generates a hang by resizing an xpdf window via its corners.
Created attachment 327719 [details]
another gdb backtrace
another one in 6 hours.
Created attachment 327780 [details]
more gdb backtrace
Not too soon after the last one.
Created attachment 328029 [details]
with 220.127.116.11-167.fc10.x86_64, while resizing a gnome file save dialog.
(seems resizing/moving windows can trigger this from time to time)
Well, there is a new change that I haven't noticed before - now when it happens, Xorg.0.log records a lot of:
(WW) RADEONHD(0): DRMCPIdle: DRM CP IDLE returned BUSY!
It is not particularly surprising since that DRMCPIdle seems to be mentioned in many of the stack traces.
Created attachment 335361 [details]
xorg-x11-drv-radeonhd-1.2.4-2.4.20090306git.fc10.x86_64, rebuild from fc11 package from koji.
Created attachment 336515 [details]
happened while using openoffice impress this time. (first time with this app, but then I don't use oo.org too often - xpdf is very easy to trigger this bug and I have switched to acroread just to avoid it...)...
new kernel, otherwise same version as last time.
Created attachment 337083 [details]
more gdb backtrace
same versions of things as last. This time I also do
"echo 1 > /sys/module/drm/parameters/debug" - and found that dmesg is flooded with these 5 lines over and over:
[drm:radeon_do_wait_for_fifo] wait for fifo failed status : 0xB803E100 0x00080000
[drm:drm_ioctl] ret = fffffff0
[drm:drm_ioctl] pid=2773, cmd=0x6444, nr=0x44, dev 0xe200, auth=1
pid 2773 is /usr/bin/Xorg, the X server's process id.
Is the ret = fffffff0 or radeon_do_wait_for_fifo status useful to anybody?
Seems like the ati driver got the equivalent bug sorted with
xorg-x11-drv-ati-6.12.2-5.fc11.x86_64 - Bug 493068 - wanna see if something can be learned in that direction?
Created attachment 341052 [details]
tx clamp patch ported over from the one in radeon/ati
I ported over the tx clamp change by Dave Airlie to the ati/radeon driver. It seems to do a lot of good with my hardware; I am hoping similiar improve the situation with radeonhd as well.
Please review, comment, and possibly commit upstream.
This bug appears to have been reported against 'rawhide' during the Fedora 11 development cycle.
Changing version to '11'.
More information and reason for this action is here:
Since this bugzilla report was filed, there have been several major updates in various components of the Xorg system, which may have resolved this issue. Users who have experienced this problem are encouraged to upgrade their system to the latest version of their packages. For packages from updates-testing repository you can use command
yum upgrade --enablerepo='*-updates-testing'
Alternatively, you can also try to test whether this bug is reproducible with the upcoming Fedora 12 distribution by downloading LiveMedia of F12 Beta available at http://alt.fedoraproject.org/pub/alt/nightly-composes/ . By using that you get all the latest packages without need to install anything on your computer. For more information on using LiveMedia take a look at https://fedoraproject.org/wiki/FedoraLiveCD .
Please, if you experience this problem on the up-to-date system, let us now in the comment for this bug, or whether the upgraded system works for you.
If you won't be able to reply in one month, I will have to close this bug as INSUFFICIENT_DATA. Thank you.
[This is a bulk message for all open Fedora Rawhide Xorg-related bugs. I'm adding myself to the CC list for each bug, so I'll see any comments you make after this and do my best to make sure every issue gets proper attention.]
Have not experienced this (the ati equivalent) since upgrading to F12 - 4 days ago, which undo the patch I had.
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