Comment # 80 on bug 1118689 from Andreas Stenglein

I did some more tests.
The patched kernel also sometimes reboots automatically. This happens during
boot.
If the lockup occurs, the screen goes black.
Sometimes I pressed/long pressed the power button to restart the machine after
some waiting.
However I have to admit that the patched kernel 5.2.0-1.ga58fb14-pae is an
improvement:
I had the impression that the more I rebooted, the more it "worked", but then
with some next reboot, it locked up / rebooted automatically during boot.
Of 10 bootups it was possible at least 5 times to boot to a somewhat working
desktop, however with errors and call traces in the dmesg log.
One time I even didn't find a regarding error in the dmesg.
I'm going to attach dmesg logs.

The original kernel 5.2.0-10.gb11a4ae-pae didn't boot to a working desktop
after at least 5 tries.
With original kernel you sometimes can watch the oops and traces on the screen,
however its to fast to really follow. Sometimes the screen goes black. After
some time it automatically reboots; as I remember I sometimes also had to
press/long press the power button to get it restarted.