[Bug 60637] [ivb hsw] DP link training errors on DPMS off (crtc disable)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=60637

vollekannehoschi at gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |vollekannehoschi at gmail.com

--- Comment #36 from vollekannehoschi at gmail.com ---
I have same problem. Here is my info:
Intel Core i7-4790K CPU
Monitor: LG 34UM95-P
HDMI with 3440x1440 at 50Hz works. DisplayPort with 3440x1440 at 60Hz gives me this
errors on every DPMS wake up:
Mär 10 16:48:43 maxxgubbl kernel: [drm:intel_dp_start_link_train] *ERROR*
failed to enable link training
Mär 10 16:48:43 maxxgubbl kernel: [drm:intel_dp_complete_link_train] *ERROR*
failed to start channel equalization

and the monitor doesn't show anything. Only switching rates with xrandr brings
the display back up again.

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