[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

Mike <lauwers.michael at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |lauwers.michael at gmail.com

--- Comment #40 from Mike <lauwers.michael at gmail.com> ---
This is happening on Intel's generation 9 as well.

cpu: i3-6100
lspci: 00:02.0 VGA compatible controller: Intel Corporation Sky Lake Integrated
Graphics (rev 06)

As Luke has done, I've just done the following change to intel_hdmi.c

-               if (INTEL_INFO(dev_priv)->gen < 7 || IS_IVYBRIDGE(dev_priv))
+               if (INTEL_INFO(dev_priv)->gen < 10 || IS_IVYBRIDGE(dev_priv))

This will hopefully fix the problem for me as well but as Luke says, it would
be nice if this got added upstream. 

I should know by tomorrow if this change has fixed it. The behaviour has been
like this for me:
-monitor wakes up if it's been less than 1 or 2 hours
-monitor doesn't wake up the next morning, hence after a period of 8hours+
inactivity

I need to go back to a console and restart xdm in order to get the monitor to
wake up in X. (using xfce as DM)

I'm running on a 4.7 kernel which is the most recent, while the live_status fix
is still only valid for generations < 7.

Would have saved me some headaches if this had been fixed but ok :)
At least I'm glad this is a known issue.

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