[Bug 96614] [BAT BDW] *ERROR* failed to enable link training/failed to start channel equalization

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96614

--- Comment #8 from Clayton Craft <clayton at craftyguy.net> ---
After chatting with Jim B, I was able to determine what my problem was.. For
one, I had actually plugged in HDMI and NOT DP but was fooled by the i915
modesetting driver calling the HDMI port a "DP" port. I was then pointed to
some LSPCON patches but was unable to successfully boot the kernel with those
patches applied (no access to serial console on this platform, no display
output, no go).
After plugging in a DP cable to my monitor and setting the monitor to DP 1.2
(1.1 didn't work...), I was able to successfully load X AND resume from
suspend. 

In summary, HDMI requires more than the LSPCON patches to function, and DP 1.2
seems to work OK.

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