[Bug 70145] Random blank screen after login with Haswell 4400

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=70145

Maksim Lin <maks at manichord.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |REOPENED
         Resolution|INVALID                     |---

--- Comment #7 from Maksim Lin <maks at manichord.com> ---
Hi I'm re-opening this since the issue I'm seeing sounds very similiar, I'm
also on haswell HD4400 (Dell Latitude 7440) and I'm seeing the issue running
everything from 3.12 through to 3.14rc7, though my LVDS is just 1080p not
exciting 3200x1800.

I'm basically having the screen go black at random times or as random as I can
tell since there seems to be no correlation with what I am doing, if the laptop
is in the eDock, connected by HDMI or with no external display.

I'll attach the dmesg snippet of what I got the last time this happened a few
min ago, though when it did, I'm sorry I instinctly did ctrl-alt-f1 to switch
virt console then alt-f7 to go back to X as I have noticed that once in a
while, doing this brings the lvds screen back on (but this time it didnt).

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