[Bug 93782] [i9xx TV][BISECT] vblank wait timeout on crtc

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93782

--- Comment #51 from Ævar Arnfjörð Bjarmason <avarab at gmail.com> ---
I also have a Dell Inspiron 1525. Running on 4.9.0-2-amd64 (the Debian stretch
rc2) without the video=SVIDEO-1:d parameter:

$ sudo dmesg|grep -B1 'Modules linked in'|grep -v Modules|grep -v -- --|perl
-pe 's/.*?\]//'|sort|uniq -c|sort -nr
     13  encoder detached but still enabled on pipe A.
     13  connector enabled without attached crtc
     10  vblank wait timed out on crtc 1
      2  vblank wait timed out on crtc 0

And with:

$ sudo dmesg|grep -B1 'Modules linked in'|grep -v Modules|grep -v -- --|perl
-pe 's/.*?\]//'|sort|uniq -c|sort -nr
      1  encoder detached but still enabled on pipe A.
      1  connector enabled without attached crtc

I can provide the more detailed backtraces if needed, but thought noting the
frequency would be interesting. This kernel option stops the freezes for me &
makes the computer responsive.

I'd be happy to test any kernel patches to see if they solve these issues, this
laptop also has an actualy svideo port (although I don't have a cable, but
could get one...)>

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