[Bug 561789] [NEW] Freeze with KMS enabled on Radeon RV350

[Yves Glodt]

Public bug reported:

When I boot lucid with KMS enabled on my Acer Travelmate 8000 (which has
an Ati Mobility 9700 (RV350)), X get's corrupted and does not respond to
input anymore on KDM launch.

When I switch to a VT I see the following messages:

Mar 12 21:06:13 sparrow kernel: [ 120.041087] [drm:radeon_cs_ioctl] *ERROR* Faild to schedule IB !
Mar 12 21:06:13 sparrow kernel: [ 120.053581] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule IB(7).
Mar 12 21:06:13 sparrow kernel: [ 120.053586] [drm:radeon_cs_ioctl] *ERROR* Faild to schedule IB !
Mar 12 21:06:13 sparrow kernel: [ 120.053926] [drm:radeon_ib_schedule] *ERROR* radeon: couldn't schedule IB(8).

(messages copied from https://bugs.launchpad.net/ubuntu/+source/xserver-
xorg-video-ati/+bug/507148/comments/61 but mine are the same)

Somehow the nomodeset switch stopped working with the -18 kernel, so I
am forced to use the -17 as of now which works fine, provided I keep KMS
disabled. The -20 kernel does still not work with KMS btw.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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Freeze with KMS enabled on Radeon RV350
https://bugs.launchpad.net/bugs/561789
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