[Bug 93578] [SKL] Intel HD 520 failed to train DP when connected with a external monitor

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93578

--- Comment #112 from PJ <foobar at pjmodos.net> ---
(In reply to Jani Nikula from comment #111)
> (In reply to Mads from comment #110)
> > Again, thanks for finally fixing this!
> 
> FWIW, as noted in comment #98, the bug is really in the dongle, and the
> patch is a workaround.

I see in the linked thread there that you are thinking of limiting the fix to
this specific device. So I want to say that I seen it in other devices too
(mostly noname tb3 to hdmi or displayport cables). But for example the cable I
am using how has multiple lanes so while it can't do 5.4 on one lane in linux,
it can do HD resolution because of multiple lanes as long as I disable the
higher speed support in my display (otherwise it goes bonkers under linux too).

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