It appears the graphics driver isn't working because you have told the
kernel to disable support for KMS ("nomodeset"):
[ 0.000000] Kernel command line:
BOOT_IMAGE=/boot/vmlinuz-4.15.0-24-generic
root=UUID=ae28586a-e989-4c32-9ab5-ceee8bacba22 ro recovery nomodeset
To fix this please edit /etc/default/grub and remove "nomodeset". Then
run:
sudo update-initramfs
and reboot.
** Tags added: radeon
** Summary changed:
- screen
+ [radeon] screen problems
** Package changed: xorg (Ubuntu) => xorg-server (Ubuntu)
** Changed in: xorg-server (Ubuntu)
Status: New => Incomplete
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which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1781384
Title:
[radeon] screen problems
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https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1781384/+subscriptions
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