Created attachment 799877 [details]
log of 15.1 kernel with modesetting driver

Last  night upgraded to 15.1 from 15.0. Ended up, after reboot, with a black
screen. It does work when I boot the 15.0 kernel and it does boot with the 15.1
kernel when I install the x11 intel drivers. So the problem seems to be that
the latest kernel does not work with the modesetting driver.

(BTW: I had the same bug on TW when the kernel was upgrade from 4.20.12 to
4.20.13. 4.20.13 did end up with a black screen, but with 4.20.12 I got a
working system. I did not try to install the intel driver there. And I do not
have that TW system anymore).

I will add three version of Xorg-0.log.