20 Mar
2013
20 Mar
'13
6:44 a.m.
Trent W. Buck <trentbuck@gmail.com> wrote:
Assuming there's nothing in Xorg.0.log either, I would next check xrandr's output to see what modelines it knows about. If you have a computer that works correctly with that monitor, or a monitor that works correctly with that computer, you should compare with its xrandr.
Thanks. My suspicion at the moment is that something isn't initialized properly: usually, the system boots fine and the monitor works; sometimes, the system boots apparently normally and the screen display is either unreadable or totally absent. A reboot is enough to fix it. This phenomenon is very recent; I'm suspecting either a kernel upgrade (one of the Debian patches) or a developing hardware fault somewhere.