Cubox i4 Desktop stops working after upgrade

[fabio]

I flashed my uSD card with armbian ubuntu desktop and works fine, until I do an apt upgrade.

After that, I always see a boot message saying: Unable to handle kernel NULL pointer derefence at virtual address 00000010.... Internal Error: oops: 17 [#1] SMT THUMB2... etc etc

If I try doing startx, I see something else...  (EE) modeset(0) failed to initialize glamor at ScreenInit() time. .... AddScreen/ScreenInit failed for driver 0.

[Igor]

We have different kernels, stable and beta, ... I am not a mind reader Explain everything.