[Bug 105406] No internal display on kernels > 4.4.x

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=105406

--- Comment #17 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Jani Nikula from comment #16)
> Looks like this was broken for you by
> 
> commit 30d9aa4265fe4b2b28239934770b2c2d59858df3
> Author: Shubhangi Shrivastava <shubhangi.shrivastava at intel.com>
> Date:   Wed Mar 30 18:05:25 2016 +0530
> 
>     drm/i915: Read sink_count dpcd always
> 
> in v4.7. (Did you ever try v4.5 or v4.6? I suspect those should have worked.)
> 
> I have seen very few displays with DPCD rev 1.0 like you have, and it's so
> old I've never been able to acquire the 1.0 or even 1.1 specs to see how the
> sink count part was written back then.

I have the 1.0/1.1. SINK_COUNT always worked the same way. Ie. this looks to be
a broken DP sink we're dealing with here.

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