Your system is still using the unsupported 'oidbaf' PPA:
version.libdrm2: libdrm2 2.4.99+git1908030630.98996f~oibaf~b
version.libgl1-mesa-dri: libgl1-mesa-dri 19.2~git1908041930.486b33~oibaf~b
version.libgl1-mesa-glx: libgl1-mesa-glx 19.2~git1908041930.486b33~oibaf~b
Please try using 'ppa-purge' to remove it from your machine and then
reboot.
** Package changed: xorg (Ubuntu) => linux (Ubuntu)
** Changed in: linux (Ubuntu)
Status: New => Incomplete
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1838959
Title:
[drm:radeon_atom_pick_dig_encoder [radeon]] *ERROR* chosen encoder in
use 0
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1838959/+subscriptions
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