[Bug 80773] [hsw] corruption after resuming from hibernation

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80773

--- Comment #10 from Harald Judt <h.judt at gmx.at> ---
I was wrong, the freezes persisted.

However, I've tried current vanilla kernel 3.18-rc1 (or whatever is the most
up-to-date git version at the moment), and first the good news:
hibernation/resume and suspend/resume finally seem to work fine.

The bad news: New bugs concerning daily usage. The worst one is that the eDP
screen goes dark and cannot be brought back to life, only resolution is a hard
reset. I assume this is due to DPMS off/on, and/or connecting/disconnecting the
VGA monitor. The monitor on the VGA port however works fine, and the machine is
not dead. No output in dmesg, however.

I can reproduce the dark screen issue by booting the machine, waiting until
lightdm has started up, then restarting lightdm => LCD display is completely
off.

Also, the backlight display will stop working (does not respond to changes via
keys or sysfs).

I hope that hibernation/resume is really solved now. I will try to reproduce
the other issues more consistently. Is there any debug kernel param that would
help, or another repository with fixes to pull?

Here are two error messages in dmesg, but maybe not related to the above
issues:
[22343.421856] [drm:ivybridge_set_fifo_underrun_reporting] *ERROR* uncleared
fifo underrun on pipe A
[22343.421861] [drm:ivb_err_int_handler] *ERROR* Pipe A FIFO underrun

-- 
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/20141016/e5b812c9/attachment.html>