[Bug 75502] [SNB, IVB] Page flips hang indefinitely, apparently waiting for mmio writes that never happen

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75502

--- Comment #20 from Simon Farnsworth <simon at farnz.org.uk> ---
It doesn't print after the freeze.

I can see that dmesg covers me back to boot time on the system, but "dmesg |
grep -i busy" shows nothing, even with your patch in place.

Xorg is logging lots of pairs of

[  6527.065] (WW) intel(0): Page flip failed: Device or resource busy
[  6527.068] (WW) intel(0): flip queue failed: Device or resource busy

 # cat /sys/kernel/debug/dri/0/i915_gem_pageflip
Flip queued on pipe A (plane A)
Flip queued on frame 364351, now 541203
Stall check enabled, 1 prepares
Old framebuffer gtt_offset 0x02f44000
New framebuffer gtt_offset 0x0093c000
MMIO update completed? 0
No flip due on pipe B (plane B)

is obviously stuck.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20140307/764178ae/attachment-0001.html>