I have since determined the probable cause for the lockup to appear just now.
The xrandr device naming switched from VGA to VGA1 and that broke my monitor enabling script and in stead of showing the same part of screen on both monitors, it tried to expand to another monitor, which probably caused the lockup.
I have since determined the probable cause for the lockup to appear just now.
The xrandr device naming switched from VGA to VGA1 and that broke my monitor enabling script and in stead of showing the same part of screen on both monitors, it tried to expand to another monitor, which probably caused the lockup.