ubuntu-x-swat team mailing list archive

[Robert Hooker <sarvatt@xxxxxxxxx>]

Yes unfortunately the problem is radeonhd is incompatable with KMS which
is the default for the radeon kernel module. If you want to use radeonhd
you will have to disable KMS

You can see it is in use and causing the issue here from your log -

 (II) RADEONHD(0): Found radeon drm 2.0.0.

drm 2.0.0 is used when KMS is in use, otherwise it is 1.x.x. If you want
to use radeonhd over radeon for some reason (it's highly not recommended
though!) then you can use these steps to disable KMS.

sudo nano /etc/default/grub.
Add radeon.modeset=1 to the end of the line GRUB_CMDLINE_LINUX_DEFAULT=.
Then sudo update-grub and reboot.


** Summary changed:

- [RV515] Thinkpad T60: black screen after booting until X is restarted manually
+ [RV515] radeonhd is incompatible with KMS.

-- 
[RV515] radeonhd is incompatible with KMS.
https://bugs.launchpad.net/bugs/568035
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