For Natty, this should be fixed now with 2.6.38-10.46.
Please reopen the Natty task if you still experience this issue.
** Changed in: linux (Ubuntu)
Status: Fix Committed = Fix Released
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This patch has landed in the current -proposed kernel (2.6.38-10.44).
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https://bugs.launchpad.net/bugs/763527
Title:
[natty] regression with radeon module (ATI Mobility HD 4570) causes
The fix you observed in kernel 2.6.39-rc5 is probably due to this
commit. The photo attached to the bug linked in the commit is very
similar to your photo.
commit 5785e53ffa73f77fb19e378c899027afc07272bc
Author: Alex Deucher
Date: Tue Apr 19 15:24:59 2011 -0400
drm/radeon/kms: pll tweaks
madbiologist:
The fix you observed in kernel 2.6.39-rc5 is probably due to this commit. The
photo attached to the bug linked in the commit is very similar to your photo.
Agree, it should be this issue:)
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The abovementioned commit is also upstream in kernel 2.6.38.5, so it
will almost certainly make it's way to Natty as part of the SRU process.
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** Changed in: linux (Ubuntu)
Status: New = Confirmed
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Title:
[natty] regression with radeon module (ATI Mobility HD 4570) causes
minor
Hello, last update.
The bug is solved in 2.6.39-rc5, but wasn't in -rc4 (kernel ppa builds).
So I think it can be easily tracked down (unfortunatelly, I don't have
time to do it) which change solves it.
Please, mark this bug as 'Invalid'/'Fix Released'/'Won't Fix'/whatever -
I am not sure which
I took a screenshot of plymouth. (But the problem resists even with Xserver -
see my previous description).
The photo isn't of good quality, but those blue lines are observable here.
Anyway, I thought this bug could be related with #735126, but the symptoms seem
to be different so perhaps some
** Attachment added: shot1.jpg
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/763527/+attachment/2088781/+files/shot1.jpg
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Title:
Update - adding radeon.modeset=0 boot option solves the problem but it
is not real solution because KMS is really needed I guess (at least for
GNOME3 stack). Anyway, the problem remains also in 2.6.39-rc3 (kernel
ppa build).
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https://bugs.launchpad.net/bugs/763527
Title:
[natty] regression with radeon module (ATI Mobility HD 4570) causes
minor display artefacts
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