P2 max 2022 cannot turn off

P2 Max 2022 with Ubuntu 22.10: I cannot turn off the pc.

Instead of turning off, it reboots. If go in suspend mode, after 2 seconds it resumes.

Basically the only way to turn off is open it and unplug the lipo connector.

Also, today screen started to flickering.

Any help?

Thank you.