[Nouveau] [Bug 67628] [NVC1] [BISECTED] Monitor on Display port shows distortions

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67628

--- Comment #13 from Ilia Mirkin <imirkin at alum.mit.edu> ---
One thing to note, the initial comment is VERY misleading, since it lists the
wrong hash! [but the right description, which no one looks at] The correct
commit that was bisected as the cause is:

commit 0a0afd282fd715dd63d64b243299a64da14f8e8d
Author: Ben Skeggs <bskeggs at redhat.com>
Date:   Mon Feb 18 23:17:53 2013 -0500

    drm/nv50-/disp: move DP link training to core and train from supervisor

    We need to be able to do link training for PIOR-connected ANX9805 from
    the third supervisor handler (due to script ordering in the bios, can't
    have the "user" call train because some settings are overwritten from
    the modesetting bios scripts).

    This moves link training for SOR-connected DP encoders to the second
    supervisor interrupt, *before* we call the modesetting scripts (yes,
    different ordering from PIOR is necessary).  This is useful since we
    should now be able to remove some hacks to workaround races between
    the supervisor and link training paths.

    Signed-off-by: Ben Skeggs <bskeggs at redhat.com>

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