[Bug 94014] Failure to wake monitor after sleep on Haswell graphics driver under 4.4.1

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94014

Luke <luke at diamand.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED

--- Comment #21 from Luke <luke at diamand.org> ---
Attachment 123537 fixes the problem for me. It's a patch against 4.6rc4 and
I've been using it today without seeing the usual black screen problem.

I put some tracing in an earlier version of the result of trying to get the HPD
status. It shows that it either succeeds immediately, or times out after 90ms.
I find that a bit bizarre; I think I don't really understand what the calling
code is doing with this function.

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