[Bug 16402] New: drm: refresh rate down to 60 Hz in 2.6.35-rc5

[Bug 16402] New: drm: refresh rate down to 60 Hz in 2.6.35-rc5

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16402

           Summary: drm: refresh rate down to 60 Hz in 2.6.35-rc5
           Product: Drivers
           Version: 2.5
    Kernel Version: 2.6.35-rc5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: maciej.rutecki@gmail.com
                CC: rjw@sisk.pl, maciej.rutecki@gmail.com,
                    ajax@redhat.com, svenjoac@gmx.de
        Regression: Yes


Subject    : drm: refresh rate down to 60 Hz in 2.6.35-rc5
Submitter  : Sven Joachim <svenjoac@gmx.de>
Date       : 2010-07-14 19:09
Message-ID : 87oce9khhu.fsf@turtle.gmx.de
References : http://marc.info/?l=linux-kernel&m=127913459017236&w=2

This entry is being used for tracking a regression from 2.6.34.  Please don't
close it until the problem is fixed in the mainline.

Caused by:

commit c867df7043b738da4f4d358d7039c243a29b4272
Author: Adam Jackson <ajax@redhat.com>
Date:   Mon Mar 29 21:43:21 2010 +0000

    drm/edid: Reshuffle mode list construction to closer match the spec

    Also, document what the spec says to do.

    Signed-off-by: Adam Jackson <ajax@redhat.com>
    Signed-off-by: Dave Airlie <airlied@redhat.com>

First-Bad-Commit : c867df7043b738da4f4d358d7039c243a29b4272

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[Bug 16402] drm: refresh rate down to 60 Hz in 2.6.35-rc5

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16402


Maciej Rutecki <maciej.rutecki@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |16055




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[Bug 16402] drm: refresh rate down to 60 Hz in 2.6.35-rc5

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16402


Alex Deucher <alexdeucher@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |alexdeucher@gmail.com




--- Comment #1 from Alex Deucher <alexdeucher@gmail.com>  2010-07-15 18:41:36 ---
I'm not sure I'd call this a regression.  It brings the behavior into
compliance with the vesa spec.  I'd wager the TFT's actual preferred mode is 60
hz.  Most TFTs run at 60 hz.  The 75 hz modes are mostly there for
compatibility.

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[Bug 16402] drm: refresh rate down to 60 Hz in 2.6.35-rc5

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16402





--- Comment #2 from Sven Joachim <svenjoac@gmx.de>  2010-07-16 07:03:26 ---
It is probably correct to use 60 Hz by default, since this is indeed what the
monitor reports as its preferred mode (according to the read-edid tool).

The real bug is that modeline parsing seems to be broken, because
"video=1280x1024@75" does not work.

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[Bug 16402] drm: refresh rate down to 60 Hz in 2.6.35-rc5

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16402





--- Comment #3 from Sven Joachim <svenjoac@gmx.de>  2010-07-17 12:45:01 ---
It seems this is actually a bug in nouveau/nv50 that has been present since
2.6.34 and only got triggered by commit c867df70. I reported this in
freedesktop's bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=29129.

IMO this bug can/should be closed as invalid.

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[Bug 16402] drm: refresh rate down to 60 Hz in 2.6.35-rc5

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16402


Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |INVALID




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[Bug 16402] drm: refresh rate down to 60 Hz in 2.6.35-rc5

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=16402


Rafael J. Wysocki <rjw@sisk.pl> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED




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