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My Intel-based desktop system was working fine with Ubuntu 16.04.3 and
Linux 4.13 32/35 up to 12 Feb 18. Since then it has been unable to
complete a boot-up, and will only run in recovery-mode. I have found
similar symptoms as were previously raised in bug 1568211. These are
the boot messages:
:~$ sudo dmesg | egrep 'drm|radeon'
[ 1.803359] [drm] VGACON disable radeon kernel modesetting.
[ 1.803429] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon
module!
[ 8.597977] [drm] VGACON disable radeon kernel modesetting.
[ 8.598047] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon
module!
[ 29.552451] [drm] VGACON disable radeon kernel modesetting.
[ 29.552497] [drm:radeon_init [radeon]] *ERROR* No UMS support in radeon
module!
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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Desktop system won't run with latest kernel 4.13 36/40
https://bugs.launchpad.net/bugs/1754571
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