[Bug 49402] [snb dp dongle] DP-to-dual-HDMI (link_train issue?)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=49402

Jani Nikula <jani.nikula at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|---                         |FIXED

--- Comment #29 from Jani Nikula <jani.nikula at intel.com> ---
Presumed fixed by
commit 70aff66c953054334bf0569696901c13e206ade6
Author: Jani Nikula <jani.nikula at intel.com>
Date:   Fri Sep 27 15:10:44 2013 +0300

    drm/i915/dp: do not write DP_TRAINING_PATTERN_SET all the time

We've fixed a number of display port link training issues, including the one
above, and the Zotac adapter now works for me without problems running
drm-intel-nightly branch of [1].

Please reopen if the problem persists running drm-intel-nightly.

If there is interest in getting this backported to stable kernels, please try a
v3.12-rc kernel, cherry-pick the above commit on top (it applies cleanly), and
report your Tested-by: if it works. Thanks.


[1] git://people.freedesktop.org/~danvet/drm

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