[Bug 90043] [BDW DP] 4k at 60Hz pipe underruns -> corruption & hangs

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90043

--- Comment #11 from Ander Conselvan de Oliveira <conselvan2 at gmail.com> ---
(In reply to Marat Bakeev from comment #10)
> The monitor works, but it still requires i915.enable_ips=0 flag, and a GPU
> hang occurs occasionally (and was unable to catch the dump). 
> 
> Should this bug remain open? Or should I file a new one when I get the dump
> from hanged GPU?

The following two patches were merged to drm-intel-nightly after that above
comment was made. Could you check if you can remove the i915.enable_ips=0 flag
with those?

commit 066cf55b9ce35f1f90dde9fcec01431a9243a949
Author: Rodrigo Vivi <rodrigo.vivi at intel.com>
Date:   Fri Jun 26 13:55:54 2015 -0700

    drm/i915: Fix IPS related flicker

commit 8cfb340774744438dea08a32072bea4a162dd132
Author: Ville Syrjälä <ville.syrjala at linux.intel.com>
Date:   Wed Jun 3 15:45:11 2015 +0300

    drm/i915: Don't enable IPS when pixel rate exceeds 95%

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