[Bug 98491] [HSW] i915 only uses 165MHz for HDMI port

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98491

--- Comment #16 from Karol Herbst <karolherbst at gmail.com> ---
(In reply to Jani Nikula from comment #15)
> The original problem is that we detect your adapter as type 1 DP dual mode
> adapter, which are notoriously bad about reporting their max clock. Trying
> to read it from the adapter would result in more failures and black screens
> than what it would solve. Thus we limit to 165 MHz on type 1 adapters.
> 
> Bit 11 of the VBT device class does seem to indicate HDMI rather than DVI
> output, but I am really not sure if that can be universally trusted.
> Something to think about though.
> 
> Have you tried kernel v4.10 or later? It does have some fixes for certain
> types of adapters.

not yet, will do when I can access the display again, which is at eastern the
latest.

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