[Bug 73705] External display not working - failed to enable link training, failed to start channel equalization

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=73705

--- Comment #9 from Krzysiek Bielicki <krzysiek at skyman.pl> ---
I don't know if I should make new bug.

DisplayPort (from docking station) also des not work.

dmesg:
[10131.377840] [drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid,
remainder is 67
[10131.377850] Raw EDID:
[10131.377856]      00 ff ff ff ff ff ff 00 10 ac 7a a0 53 4b 47 31
[10131.377861]      2c 17 01 03 80 00 ff ff ff ff ff ff ff ff ff ff
[10131.377865]      ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[10131.377869]      ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[10131.377873]      ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[10131.377878]      ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[10131.377882]      ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[10131.377886]      ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
[10152.775550] [drm:intel_dp_start_link_train] *ERROR* failed to enable link
training
[10152.778327] [drm:intel_dp_complete_link_train] *ERROR* failed to start
channel equalization

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