[Bug 94593] Flickering Screen on Dell XPS13 9350

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94593

--- Comment #46 from nhellwege at gmail.com ---
(In reply to tranceash from comment #38)
> looks like a power management issues dating 8 months back, Also happened on
> the broadwell systems https://bugs.freedesktop.org/show_bug.cgi?id=91393.
> This makes any linux system a pain to work because of this integrated gpu
> driver . Skylake has been out for 7 months and we still have problems

Ok, I looked into that bug and it seems its not the same. It specifically
mentions external monitors and also not black screen flickering, but more a
graphical flickering, without the completely black frames in between.

Nevertheless, I tried the proposes patches from
https://bugs.freedesktop.org/show_bug.cgi?id=91393#c102 on intel-drm-nightly
and I still got the FIFO underrun ERROR and also the black screen flickering.
So thats not a solution.

Also, it seems that the FIFO error does appear for the first flicker, but not
for any ones after the first, so in my opinion, it can be used as an error
criteria.

I could bisect the kernel further, but as seen in
https://bugs.freedesktop.org/attachment.cgi?id=123104 there are so many
commits, which I cannot build. Maybe someone can help me to compile one of
these? I can then do the remaining (since they are all in order, it seems like
the reason they dont compile might be the same).

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