[Bug 110700] intel driver crashes with kernel 5.1.2 when booting with external monitor connected to Mini-Displayport

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110700

--- Comment #3 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
May 17 07:05:20 Gauss kernel: [drm:ironlake_crtc_enable [i915]] *ERROR* mode
set failed: pipe B stuck

The problem is the pipe didn't start for some reason. There is one workaround 
we're missing, but unfortunately the docs don't have enough details to
implement it. Another thing we're doing differently to the spec is manual vs.
auto fdi train. So maybe something to try there.

However, since this is a new regression, and there haven't been any changes to
the relevant code that I can see, a bisect would be most helpful. Can you do
that?

I have similar IVB Carbon X1 here but unfortunately I wasn't able to reproduce
this myself :(

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