1. During the login, the choice "Ubuntu on Xorg" appears no longer (I don't know why). I can choose only "Openbox" or "Ubuntu". And I have chosen "Ubuntu" of course.
2. I have only one monitor which works (the HP monitor). The other monitor (Asus) is just ignored.
And in this case, the automatic lock screen works correctly. I can find my running appli after a re-login.
Test suggested by oria on IRC: try "nomodeset" in kernel parameter and try to reproduce the problem.
After the reboot:
```
$ uname -a
Linux flhpz4 5.15.0-46-generic #49-Ubuntu SMP Thu Aug 4 18:03:25 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux
$ cat /proc/cmdline /boot/vmlinuz- 5.15.0- 46-generic root=/dev/ mapper/ vg0-system ro quiet splash vt.handoff=7 nomodeset
BOOT_IMAGE=
```
Remarks:
1. During the login, the choice "Ubuntu on Xorg" appears no longer (I don't know why). I can choose only "Openbox" or "Ubuntu". And I have chosen "Ubuntu" of course.
2. I have only one monitor which works (the HP monitor). The other monitor (Asus) is just ignored.
And in this case, the automatic lock screen works correctly. I can find my running appli after a re-login.