[Bug 39672] New: [r280] Black screen on PPC with digital monitor on radeon / Cannot find any crtc or sizes

[Bug 39672] New: [r280] Black screen on PPC with digital monitor on radeon / Cannot find any crtc or sizes

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=39672

           Summary: [r280] Black screen on PPC with digital monitor on
                    radeon / Cannot find any crtc or sizes
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.0.0-rc6
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Video(DRI - non Intel)
        AssignedTo: drivers_video-dri@kernel-bugs.osdl.org
        ReportedBy: rechner@vlado-do.de
        Regression: No


Created an attachment (id=66132)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=66132)
syslog from system without video output

Testing Kernel 3.0.0 (rc6 from Debian experimental) I encountered a problem
with (DVI) display detection - the screen goes blank when trying to activate
KMS. From syslog:

[drm:radeon_add_legacy_connector] *ERROR* DVI: Failed to assign ddc bus! Check
dmesg for i2c errors.

[drm]   DDC: no ddc bus - possible BIOS bug - please report to
xorg-driver-ati@lists.x.org

No connectors reported connected with modes
[drm] Cannot find any crtc or sizes - going 1024x768

To me this looks quite similar to #23222.

With a VGA monitor the screen does not go blank, but I still don't get the
login window in KDM (?).

I'm using Ubuntu 11.04 and with a self-compiled 2.6.39-rc7 kernel I have
working KMS (even though direct rendering does not work, as reported on
https://bugs.freedesktop.org/show_bug.cgi?id=37169 ).

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[Bug 39672] [r280] Black screen on PPC with digital monitor on radeon / Cannot find any crtc or sizes

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=39672


Andrew Morton <akpm@linux-foundation.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |akpm@linux-foundation.org
         Regression|No                          |Yes




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[Bug 39672] [r280] Black screen on PPC with digital monitor on radeon / Cannot find any crtc or sizes

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=39672


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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |florian@mickler.org,
                   |                            |maciej.rutecki@gmail.com,
                   |                            |rjw@sisk.pl
             Blocks|                            |36912




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[Bug 39672] [r280] Black screen on PPC with digital monitor on radeon / Cannot find any crtc or sizes

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=39672





--- Comment #1 from Alex Deucher <alexdeucher@gmail.com>  2011-07-22 21:59:15 ---
Created an attachment (id=66382)
 --> (https://bugzilla.kernel.org/attachment.cgi?id=66382)
fix

This patch should fix the i2c setup.

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[Bug 39672] [r280] Black screen on PPC with digital monitor on radeon / Cannot find any crtc or sizes

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=39672


Vlado Plaga <rechner@vlado-do.de> changed:

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




--- Comment #2 from Vlado Plaga <rechner@vlado-do.de>  2011-07-23 17:24:47 ---
Great, now I'm running Linux 3.0. :-)

And the best thing: it looks like there's also progress regarding the
aforementioned bug I reported on freedesktop.org - I'll have to investigate
further. This is what glxinfo reports (instead of 'software renderer'):

"OpenGL renderer string: Mesa DRI R200 (RV280 5962) 20090101 PowerPC/Altivec
TCL DRI2"

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[Bug 39672] [r280] Black screen on PPC with digital monitor on radeon / Cannot find any crtc or sizes

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=39672


Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|CODE_FIX                    |PATCH_ALREADY_AVAILABLE




--- Comment #3 from Florian Mickler <florian@mickler.org>  2011-08-04 20:49:24 ---
Patch: https://bugzilla.kernel.org/attachment.cgi?id=66382

Please close this bug if the patch hits Linus tree.

--- Comment #4 from Florian Mickler <florian@mickler.org>  2011-08-08 08:20:19 ---
A patch referencing this bug report has been merged in Linux v3.1-rc1:

commit 6dd666333ddee39903d86f870d5c40d9f100e0cc
Author: Alex Deucher <alexander.deucher@amd.com>
Date:   Sat Jul 23 18:02:04 2011 +0000

    drm/radeon/kms: fix i2c map for rv250/280

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[Bug 39672] [r280] Black screen on PPC with digital monitor on radeon / Cannot find any crtc or sizes

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=39672


Florian Mickler <florian@mickler.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED
         Resolution|PATCH_ALREADY_AVAILABLE     |CODE_FIX




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