Red Hat Bugzilla – Bug 502493
Video playback leaves display blank, restarting X doesn't restore
Last modified: 2009-05-30 04:40:03 EDT
Running F11 latest rawhide, on machine with intel G35 graphics onboard, KMS with plymouth works.
Obviously I realise mythtv from ATRPMS isn't part of F11, but it seems to be tickling a bug in X or KMS.
Up to and including kernel-PAE 188.8.131.52-126.fc11 mythtv worked fine, but since 184.108.40.206-140.fc11 and 220.127.116.11-155.fc11 there is a problem, when I start full screen TV playback the display goes black, but the machine is not hung.
Xorg process still exists, no errors to var/log/xorg.0.log or /var/log/messages or dmesg, can't kill it with CTRL-ALT-BKSP (I've re-enabled Zapping), can't switch to a different VT, can't connect using vino, even init 3 followed by kill Xorg followed by init 5 from an SSH session won't bring back the display, though it does try.
If I boot back to kernel 18.104.22.168-126.fc11 it all works again.
xorg-x11-drv-intel.i586 is 2.7.0-6.fc11
ring idle: 0% ring space: 96/126976 (0%)
task percent busy
Projection and LOD: 100%
Bypass FIFO: 100%
Color calculator: 100%
Command Processor: 100%
I don't know if the output from intel_gpu_dump would help?
Vendor: 0x8086, Device: 0x2982, Revision: 0x03 (E0)
Created attachment 345315 [details]
Xorg log file from before the problem
Created attachment 345316 [details]
Xorg logfile attempting to restart X after the problem
I have discovered that the X problem does not happen if I boot with "nomodeset" kernel parameter.
I will try to find if any other program apart from mythtv can produce the fault with KMS enabled.
Fixed by upgrading to
"Add intel-2.7-dont-vsync-xv.patch to disable Xv vsync, fixes hw
lockup for full screen Xv (#499895)" sounds familiar.
*** This bug has been marked as a duplicate of bug 499895 ***