[Bug 83207] [BDW rc6] GPU hang playing a video

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83207

--- Comment #16 from Gary Wang <gary.c.wang at intel.com> ---
Created attachment 107215
  --> https://bugs.freedesktop.org/attachment.cgi?id=107215&action=edit
Enable using BCS for pageflips in gen7/7+/8

It verified this issue in HP Stag BW C2 Sku device/BIOS B.38 for kernel 3.13
(https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tag/?id=v3.13)
with "drm-i915-always-enable-BCS-to-gen7-later" patch applied. 

It forces to using BCS pageflips for Ivybridge and later. 

The GPU hang with ecode:0xf5dffffe went away in kernel 3.13+patch, and
UbuntuBoot.ogv playback worked well (via firstboot-video provided by
Canonical). 
test #1, test cycle with 1345 times overnight, pass
test #2, test cycle with 100 times, pass
test #3, test cycle with 123 times, pass
test #4, test cycle with 132 times, pass
test #4, test cycle with 50 times, pass

The random UI freeze (like # 77104,
https://bugs.freedesktop.org/show_bug.cgi?id=77104) didn't be happened again
until now.

Gary

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are on the CC list for the bug.
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20141002/77c71d1d/attachment.html>