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  1. Bug #1300349
  2. Comment #41

Comment 41 for bug 1300349

Revision history for this message
Peter-jezdec (peter-jezdec) wrote :

I did the bisection again, this time on the v3.15.6 version and found that 1c46b5d7cd5d9912687a9e65626cdc24b1074ae1 is the first bad commit.
commit 1c46b5d7cd5d9912687a9e65626cdc24b1074ae1
Author: Dave Airlie <email address hidden>
Date: Mon Jul 14 11:04:39 2014 +1000

    Revert "drm/i915: reverse dp link param selection, prefer fast over wide again"

    commit c6930992948adf0f8fc1f6ff1da51c5002a2cf95 upstream.

    This reverts commit 38aecea0ccbb909d635619cba22f1891e589b434.

    This breaks Haswell Thinkpad + Lenovo dock in SST mode with a HDMI monitor attached.

    Before this we can 1920x1200 mode, after this we only ever get 1024x768, and
    a lot of deferring.

    This didn't revert clean, but this should be fine.

    bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1117008
    Signed-off-by: Dave Airlie <email address hidden>
    Signed-off-by: Daniel Vetter <email address hidden>
    Signed-off-by: Greg Kroah-Hartman <email address hidden>

:040000 040000 a60449ba7deb5b270c514321ed0c60051d1f8c79 4edb98fefb9abc338b3b8314dbbf4c210a4ac67b M drivers