[Bug 108687] ThinkPad T450 - Broadwell-U: [drm:intel_dp_start_link_train [i915]] *ERROR* failed to enable link training

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108687

--- Comment #8 from Diego Viola <diego.viola at gmail.com> ---
Created attachment 142414
  --> https://bugs.freedesktop.org/attachment.cgi?id=142414&action=edit
dmesg w/ drm.debug=0xe exhibiting the error (no xrandr)

I've ran another dmesg capture with drm.debug=0xe and got another error:

[22701.493597] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to get
link status
[22701.493635] [drm:intel_dp_start_link_train [i915]] [CONNECTOR:72:DP-1] Link
Training failed at link rate = 162000, lane count = 4

I didn't change modes with xrandr at all this time, nor turned off the monitor
manually.

I've had the screen turn off by default (power saving) a few times though.

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