On Monday, 29. October 2012. 15.32.26 valent.turkovic(a)gmail.com wrote:
Most of the time I work through the day whthout hangs and leave PC
running, but when I return the next day I see that monitor won't turn
back on, but still hdd light blinks from time to time
This likely means that the machine is alive, and only graphics has died. Try
to ssh in from another machine. Look at /var/log/messages,
/var/log/Xorg.0.log, dmesg, xrandr, while the machine is in this state.
Also, if dpms is the culprit, do "xset -dpms" to turn it off, and then see if
the problem persists. Turn the monitor on and off manually, since dpms will not
be active to do it for you.
HTH, :-)
Marko