I'm stuck with a similar issue.
The solution with MUTTER_DEBUG_ENABLE_ATOMIC_KMS=0 helped me! Thanks guys!
I created logs for you (without kernel parameter: drm.debug=0xff, can't find how do it).
If somebody wants to help collect logs it easy perform without working screen:
1. Disable authorization after sleep in the settings->privacy->screen.
2. Send Ubuntu sleep.
3. Start Ubuntu.
Now goes steps with a black screen but PC looks working:
1. Ctrl + Alt + T for open terminal.
2. Write journalctl -b0 > journal.txt ( I used the UP key for using the last terminal command).
3. restart your PC.
4. journal.txt will be in the HOME directory.
Hi team and all.
I'm stuck with a similar issue. DEBUG_ENABLE_ ATOMIC_ KMS=0 helped me! Thanks guys!
The solution with MUTTER_
I created logs for you (without kernel parameter: drm.debug=0xff, can't find how do it). >privacy- >screen.
If somebody wants to help collect logs it easy perform without working screen:
1. Disable authorization after sleep in the settings-
2. Send Ubuntu sleep.
3. Start Ubuntu.
Now goes steps with a black screen but PC looks working:
1. Ctrl + Alt + T for open terminal.
2. Write journalctl -b0 > journal.txt ( I used the UP key for using the last terminal command).
3. restart your PC.
4. journal.txt will be in the HOME directory.
Good luck all us!