CPU=i7 920 GPU=AMD R9 280 driver=amdgpu (open source)
after I installed GOG Shadow Warrior Classic (GOG provides a Linux Install) I started the “Settings” (not the game executable itself) after briefly seeing the dosbox window my monitor went black and displayed the message: “input signal out of range” Since then as soon as KDE starts up the monitor turns to standby and displays the above message.
The Monitor is connected via HDMI.
I can change to tty
When starting Windows (dualboot system) everything works fine (Hardware error seems very unlikely)
What I found out:
xrandr can’t open display
starting x-server produces “fatal IO error 11”
google search for that error produced only very specific topics which wouldn’t apply to my case (at least as far as I understood)
reinstalling x-server did change nothing
It seems likely, that dosbox or the game changed resolution and / or refresh rate to unsuitable values. So my monitor can’t display those.
I really don’t know how to isolate the cause of the problem, or go about getting more info than I have up to now. Much less solve the problem.
So maybe someone can point me in the right direction. I can do ok with the terminal but only tty to trouble shoot turns out to be out of my league at least for now.
Thanks in advance for any help.