[Bug 90963] i915:No display with Display port [drm:intel_dp_start_link_train] *ERROR* too many full retries, give up

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90963

Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com> changed:

           What    |Removed                     |Added
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             Status|NEW                         |NEEDINFO

--- Comment #62 from Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com> ---
(In reply to sassmann from comment #56)
> Created attachment 128390 [details]
> dmesg-4.9-rc8-blankscreen.txt
> 
> Just tested with 4.9-rc8. I've switched the Dell U3415W to DP1.2 and after
> booting the monitor goes into standby mode. Attaching log with debug enabled.

As it has been pointed out somewhere in this bug, U3415w does seem to have have
issues with the DP1.2 setting.

http://www.dell.com/support/article/us/en/04/SLN295763/how-to-use-and-troubleshoot-the-dell-u3415w-ultrasharp-34-curved-monitor?lang=EN

"Blanking video on a single display w/DisplayPort Connection

Some users have noted that using a single U3415W curved display may not display
video out of the box. It has been determined that these systems will display
video when the DisplayPort input of the U3415W is set to DisplayPort 1.1."

One experiment you can try is to connect another monitor to the DP-Out port on
U3415w and enable DP 1.2.

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