Black screen after login in Ventura

[Mac Hammer Fan]

Occasionally, once or twice a week, under Ventura (latest update) after login, the screen turns black. Only the cursor is visible. What can cause this?
The only thing I can do is a hard reset. (press the power button).

 

[Mac Hammer Fan]

I tried to repair the disk in the recovery mode and safe boot. But sometimes I still get the black screen.
I get these warnings.
warning: container has been mounted by APFS version 2235.0.13, which is newer than 2142.140.9
warning: disabling overallocation repairs by default; use -o to override
warning: apfs superblock at index 0: apfs_doc_id_index_flags has unrecognized flags (0x10)
I have erased my internal disk and reinstalled everything but the warnings remain.

 

[Mac Hammer Fan]

The black screen turns in a normal desktop after some time (a couple of minutes). Better than nothing.
The black screen doens't appear when no Acasis thunderbolt is connected.
I guess the culprit was the firmware update after I installed Sonoma RC on an external SSD. Fingers crossed that this will be solved in the future.