2011/1/15 Ng Oon-Ee <ngoonee@xxxxxxxxx>: > On Sat, 2011-01-15 at 00:25 -0300, dario wrote: >> Hi, i have a problem with my monitor, since when upgraded with pacman >> -Syu then when reboot the PC i could not start Arch, but if in fallback. >> Since my monitor flashes almost second. Then i don't know because walked >> in normal mode but continues with flashes. >> My archive /etc/X11/xorg.conf is empty and i have not installed drivers >> for my plate NVidia. >> There is a way for configurated the monitor. > > Please check the wiki for xorg and nvidia I did have this problem with one laptop I was tasked to repair. It was an old nVidia 420 Go. This is probably due to an EDID mess that came as part of a regression in the graphics stack, which is not easily fixed. Neither nv/nouveau nor nvidia worked. You may want to try all drivers as well.