Sorry for the late reply. Had to run errands with the kids.
Thanks everyone for the input again! It’s really much appreciated.
I tried all suggestions here, but unfortunately nothing helped yet.
I actually did the update earlier and saw the new kernel coming in. Sorry, I should have mentioned that.
But as just mentioned this didn’t help either.
I ran ‘sudo mkinitcpio -P’ several times today, but it never brought back my desktop (after rebooting and loging in).
I also installed the lts kernel with the listed commands. Again no improvement.
Then I moved the .Xauthority file and restarted lightdm. This fired up the desktop with the login window again. But the behavior was the same: after I typed in my password and hit Enter, the screen went black and a few seconds later my monitor told me it’s not getting a signal and it went into standby again.
Does anyone know what happens exactly desktop-wise after one logs in?
@ricklinux I actually don’t have the modules you listed in my grub file. Here’s the link to it:
I think the mistake I made is to run the inxi command in the live ISO environment, so it’s the modules the live ISO uses I think.
I installed inxi via the terminal on my desktop machine that has the black screen problem and ran it again. You can find the output here:
Sorry for the confusion.
My guess currently is that it’s not a kernel issue, since updating the kernel and even switching to the lts version did not change the behavior. My guess is that the initial update changed some config/setting that causes this behavior. But it’s really just an uneducated guess.
Should I try to reinstall the system via the new live ISO?
I have /home on a separate partition. If I format the / partition and reinstall the system, I guess I have to reinstall all the programs/tools I installed so far. But if I create the same user and do not mark my /home partition for formatting, it should at least keep all my files (including configs in my home directory), correct?
Maybe that would get rid of the issue, since the desktop via the live ISO obviously works.
But I guess it would also be nice to figure out what causes this problem.