[SOLVED] [Slackware 15.1-current] X Window System doesn't start

dchmelik · 05-22-2022, 12:43 PM

After I upgraded from Linux kernel 5.17.8 to 5.17.9 and today rebooted, X Window System doesn't start. KDE and XFCE colour part of the screen top white, and the rest black, and one one or both I saw a mouse cursor, then nothingn happens. Twm just shows black screen.

Petri Kaukasoina · 05-22-2022, 01:40 PM

Quote:

Originally Posted by dchmelik

After I upgraded from Linux kernel 5.17.8 to 5.17.9 and today rebooted, X Window System doesn't start. KDE and XFCE colour part of the screen top white, and the rest black, and one one or both I saw a mouse cursor, then nothingn happens. Twm just shows black screen.

Your log tells you are still running 5.17.8. Try to remember what you always need to do after kernel upgrade.

dchmelik · 05-22-2022, 02:23 PM

Quote:

Originally Posted by Petri Kaukasoina

Your log tells you are still running 5.17.8. Try to remember what you always need to do after kernel upgrade.

I know. I installed new kernel, setup old kernels, updated bootloader, rebooted into 5.17.9, compiled zfs-on-linux & started zfs, logged in non-root, tried to start X Window System (X.) Didn't work so I rebooted; selected 5.17.8: now same happens on that.

I had to 'slackpkg clean-system' and now get clearer error message (log updated: ) X says it can't run in framebuffer mode.

walecha · 05-23-2022, 05:14 AM

Have you try using kernel-generic + kernel-modules?

Windu · 05-23-2022, 08:46 AM

Quote:

Originally Posted by dchmelik

Didn't work so I rebooted; selected 5.17.8: now same happens on that.
I had to 'slackpkg clean-system'

Sounds like the kernel is not causing your issue if the same issue now also occurs with your original kernel
Rather I suspect some left-over software or some configuration that prevents the X from initializing.

dchmelik · 05-23-2022, 09:58 AM

WHen I removed kernel option 'amdgpu.dc=0' X worked again, but the strange thing is, some weeks/months ago someone told me to add that option for similar/same problem.

Windu · 05-23-2022, 02:28 PM

Quote:

Originally Posted by dchmelik

WHen I removed kernel option 'amdgpu.dc=0' X worked again, but the strange thing is, some weeks/months ago someone told me to add that option for similar/same problem.

I assume 'amdgpu.dc=0' may have been a temporary fix for a kernel issue and with newer kernels that fix not only got obsoleted but in fact now has an adversary effect.