[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

Ander Conselvan de Oliveira <conselvan2 at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      i915 platform|SKL                         |
      i915 features|display/DP                  |

--- Comment #25 from Ander Conselvan de Oliveira <conselvan2 at gmail.com> ---
(In reply to Ander Conselvan de Oliveira from comment #22)
> (In reply to Eong Chen from comment #19)
> > Created attachment 119199 [details]
> > dmesg log. (Find the right rate 270000 and set it in the code.)
> > 
> > dmesg file with rate 270000. Both my laptop and external monitors show black
> > screen.
> 
> Can you run the same test again but with i915.enable_ips=0 in the kernel
> command line?

Also, the following branch has some changes to make link training closer to
spec compliant. Could you please give it a try?

https://github.com/anderco/linux/tree/dp-cleanup

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