Toshiba Satellite L300D EDID Error Flooding Problem

[rdratlos]

There is a problem with Toshiba Satellite L300D with ATI Mobility Radeon X1100. Even though there is no monitor connected to the HDMI port the drm/radeon module dumps every ten seconds an EDID to the kernel logs and onto terminal sessions. This is valid since Ubuntu lucid and still exists in latest Ubuntu natty kernel.

See also discussion in http://ubuntuforums.org/showthread.php?p=11121971#post11121971.

[rdratlos (rdratlos)]

There is a patch for this problem proposed for upstream kernel.

See http://lists.freedesktop.org/archives/dri-devel/2011-August/013709.html

I've backported the patch to Ubuntu Natty and it has been successfully tested by Routhy (see http://ubuntuforums.org/showthread.php?t=1607778).

You will find the test kernel in https://launchpad.net/~rdratlos/+archive/ppa-asus-m2a-fix.

[Leann Ogasawara (leannogasawara)]

Thanks for the pointer to the patch. Looks like it's getting some feedback from upstream. Assigning this to myself to keep an eye on the patch. We can pull it in as it firms up with upstream (ie I'd prefer a clean cherry-pick from Linus' repo). Thanks.

[madbiologist (me-again)]

This patch has been included upstream in kernel 3.1-rc4, and cc'd to the stable kernel series.

[Leann Ogasawara (leannogasawara)]

Just pasting the upstream commit id for reference:

commit f2b60717e692550bf753a5d64a5b69ea430fc832
Author: Thomas Reim <email address hidden>
Date: Wed Aug 17 09:03:32 2011 +0000

    drm/radeon: Extended DDC Probing for Toshiba L300D Radeon Mobility X1100 HDMI-A Connector

Additionally, I'm moving the status back from Fix Committed to In Progress as the patch has not been officially applied to the Ubuntu kernel repositories yet. Thanks.

[madbiologist (me-again)]

This patch has also now been included upstream in kernel 3.0.4.

commit 44510a7f9f4a15a1c27b417115a412dabb2b278c
Author: Thomas Reim <email address hidden>
Date: Wed Aug 17 09:03:32 2011 +0000

    drm/radeon: Extended DDC Probing for Toshiba L300D Radeon Mobility X1100 HDMI-A Connector

    commit f2b60717e692550bf753a5d64a5b69ea430fc832 upstream.

[Leann Ogasawara (leannogasawara)]

We recently rebased to upstream stable v3.0.4. Marking this Fix Committed now. Should be available in the first upload after Beta-1 (ie 3.0.0-10.16). Thanks.

[madbiologist (me-again)]

Ubuntu kernel 3.0.0-10.16 is available in the Oneiric repositories now, with this comment:

[ Upstream Kernel Changes ]

  * rebase to v3.0.4

I assume it's OK if I mark this Fix Released now?