[Bug 83677] [HSW] GPU HANG: ecode 0:0x87d3bffa on ctx load

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=83677

--- Comment #111 from Hugh Greenberg <hugegreenbug at gmail.com> ---
LightDM and the unity desktop worked after I disabled dri3 in the intel driver
as Chris suggested. After that change and enabling tear free (also as Chris
suggested), I was able to test this kernel. I was able to play a video in Kodi
for over an hour using the VAAPI support as Peter described above and I did not
experience a hang.


(In reply to Chris Wilson from comment #110)
> (In reply to Hugh Greenberg from comment #109)
> > I tried it, and while LightDM loaded, I couldn't log in since X crashed on
> > login.  Here is a stack trace:
> 
> That's a bug in the VT layer; a race in the graphics mode takeover of the
> console. You have to restart X - I forget that lightdm doesn't handle that
> automatically.

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