after following instructions as described in:
… and installing my new 6800 XT into motherboard, I ran into a problem; I just cannot boot into Manjaro anymore. 6800 XT seems to be working fine to an extent that I can see BIOS, modify boot sequence etc. but after that it just wont’t give me my Plasma anymore. It does not even give black screen or any error message, it tends to boot as usual and then my monitor suddenly returns “There is no signal on DisplayPort or HDMI, going into standby”.
How should I proceed now? I tried to boot up the latest Live ISO of Manjaro, but it won’t give me Plasma neither, it fails on " Failed to start Simple Desktop Display Manager" and not even manual “startx” from tty did the trick, it just won’t show any GUI whatsoever.
I also tried to chroot into my current installation of Manjaro via this Live USB running, I tried to rebuild linux-headers for Kernel 5.9, also ran updates and then did remove video-linux as well. Then rebooted and still no signal. So far it seems to be hopeless, any ideas as to what I should try next? Do you think this is a hardware issue? Yet how is it possible then that I can see BIOS via my DP or HDMI just fine, also Live USB seems to be able to give me at least tty fine without much issues so that I can chroot into my current installation of Manjaro from it.
Any help MUCH appreciated, for now I will continue searching for answers via Google as usual. Thank you a lot in advance!