[Bug 101302] [HSW] no Intel HDMI video output with kernel 4.4 and 4.9

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=101302

--- Comment #29 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
8bpc vs. 12bpc eh? Which probably means there's a broken component somewhere in
the signal path. Could be the level shifters in the source, cable, dongle, or
the monitor itself.

The workaround I've been suggesting is to add a knob for the user to limit the
color depth. The problem for cases like this where there is no output (as
opposed to just glitchy output) is that a connector property would have to be
changed by the user blind. The alternatives would be to change the default to
8bpc, or add a modparam (or something like it) to force the 8bpc already when
the driver loads. Hmm. Maybe we should extend the "awesome" video= cmdline
syntax a bit?

-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20180517/2003f9ad/attachment-0001.html>