[Bug 81488] [BDW-U Bisected]System hang while running "xrandr --output eDP1 --off"

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=81488

Guo Jinxian <jinxianx.guo at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEEDINFO                    |ASSIGNED

--- Comment #3 from Guo Jinxian <jinxianx.guo at intel.com> ---
(In reply to comment #2)
> I'm surprised that this commit would trigger a regression since it was
> intended to have little/no functional change (aside from one potential NULL
> dereference which was plugged by this patch).
> 
> You indicate that the bug appears on only a single device...does it happen
> every single time you run the xrandr command on that platform, or is the
> problem only seen occasionally?  I'll have to look more closely when I have
> some free time tomorrow, but the fact that you don't see the same problem on
> other similar devices makes me wonder whether I've introduced a race
> condition somewhere that you only get (un)lucky enough to hit on that one
> device.
> 
> I don't suppose there's any way to get a serial console on this device so
> you can see the kernel dump?

The failure unable to reproduce now.

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