Red Hat Bugzilla – Bug 476590
radeonhd - glxgears causes hard lockup on V5200
Last modified: 2009-11-28 04:36:47 EST
Created attachment 327035 [details]
xorg config file
Description of problem:
Fedora 10 with latest radeonhd -- Thinkpad T60p with ati V5200 graphics appears to lock solid after 5-30s when "glxgears" or "google earth" is used
Using regular desktop (metacity). DRI / EXA enabled.
Version-Release number of selected component (if applicable):
seen in varying builds over last few weeks
(also varying kernels up to/including 220.127.116.11-155)
F10 Kernel is booted with "nopat nomodeset"
Steps to Reproduce:
1. Enable EXA, DRI with radeonhd
3. Start glxgears
Decent framerates (~1400 fps) reported, gears drawn successfully for a few iterations
Then system freezes hard. caps lock etc inoperable. Screen remains static. Not pingable.
System continues to operate normally
Appears to be same problem as reported here -> http://bugs.freedesktop.org/show_bug.cgi?id=19008
However the reported duplicate bug is not the same
Real xorg.conf added -- note I use this for both radeon and radeonhd, so many radeon parms are in the file...
Lockup does not occur with radeon driver (thathas other problems).
Also by trial/error narrowed it down to "EXA" vs "XAA".
With EXA the crash occurs
With XAA the crash *does not occur*, although the performance is ~15% down.
All other options (except DRI) stripped from device section to prove this.
Might this be this bug? http://bugs.freedesktop.org/show_bug.cgi?id=18097
It mentions a workaround using EXANoComposite.
With EXANoComposite=TRUE, glxgears appears to continue running normally, when in EXA mode -- so it does seem to relate to composite acceleration in radeonhd ?
Update -- after running the above test I suspended, traveled to office, resumed, and used xrandr to enable second screen [DVI] (I do this every day).
Out of interest I ran glxgears, and the display locked hard before the gears themselves were even rendered -- only the frame appeared.
Paying close attention to the system, the disk light remained active for ~30s, but no flashnig caps lock etc -- so no dump. The screen was displayed, but frozen. Could not check network connectivity (DHCP)
Reverting back to XAA and will retry at next opportunity.
ANy suggestions for ways to get better debug happily taken if it helps in PD.
Maybe this bug is related to :
You have this filed under xorg-x11-drv-ati, but you mention using the radeonhd driver. Those are two different drivers, which one are you using?
This bug was raised when using radeonhd. However recent developments during 2009 have made radeon driver work better. Since I'm no longer using radeonhd I suggest this bug is closed?
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Closing per comment #7.