[Bug 86683] [BSW Bisected] HDMI screen goes black for a while when run testdisplay -i

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=86683

Li Xu <li.l.xu at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|bisect_pending              |
             Status|NEEDINFO                    |ASSIGNED
            Summary|[BSW Regression] HDMI       |[BSW Bisected] HDMI screen
                   |screen goes black for a     |goes black for a while when
                   |while when run testdisplay  |run testdisplay -i
                   |-i                          |

--- Comment #2 from Li Xu <li.l.xu at intel.com> ---
Bisect result:

206645910b9796bff13fcdb67bdca166b724ba62 is the first bad commit
commit 206645910b9796bff13fcdb67bdca166b724ba62
Author: Jesse Barnes <jbarnes at virtuousgeek.org>
Date:   Wed Nov 5 14:26:09 2014 -0800

    drm/i915: check for audio and infoframe changes across mode sets v2

    If these change (e.g. after a modeset following a fastboot), we need to
    do a full mode set.

    v2:
      - put under pipe_config check so we don't deref a null state (Jesse)

    Signed-off-by: Jesse Barnes <jbarnes at virtuousgeek.org>
    Reviewed-by: Ander Conselvan de Oliveira
<ander.conselvan.de.oliveira at intel.com>
    Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>

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