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[Bug 1568211] Missing required logs.
This bug is missing log files that will aid in diagnosing the problem.
>From a terminal window please run:
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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no UMS support in radeon module
Status in linux package in Ubuntu:
I upgraded overnight from Wily to Xenial. The system will not boot.
Only a blank screen after grub loads the kernel.
The recovery kernel loads fine and I was able to find the following
[drm] VGACON disable radeon kernel modesetting
[drm:radeon_init [radeon]] *ERROR* no UMS support in radeon module!
The recovery kernel command line had a nomodeset parameter that was
not in the main kernel command line.
Adding the nomodeset parameter the main kernel command line finally
booted the system. It's kind of ugly but it seems to work.
Note: For what it's worth I reported a similar issue against several
Utopic kernels (bug #1407505). There was a back and forth with
jsalisbury until a kernel finally worked. I have had no problems until
Hope that helps.
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