Hi. I am fiddling with my X.org configuration and my system entered into low graphics mode because of a configuration error. The screen is very dim in low graphics mode. Curiously, the screen stays dim (including the BIOS loading screen and the Grub boot menu) after rebooting (over and over again). Only if I halt the system does the back light seem to light up again.

Is this behavior normal? I can reliably reproduce these symptoms.