So there is a notebook that has Scientific Linux 6.3 installed with GNOME 2.
If we don't press any button on the keyboard or move the mouse, the screen of it turns black.
But: if we move the mouse/hit a button when the screen of it went black.. it still stays black.. it's not a hardware problem, it's a problem related to the OS. I didn't find any energy saving options for this in the BIOS.
If the screen is black, we can slightly see that the OS is still running, but it's very-very-very dark..
The only solution is to press the power-on button for 5 seconds to turn the machine off..
Any solutions/settings? Please halp.
UPDATE#1: (I can only rarely get to this notebook, that's why I can only answer rarely, sorry) So I found a settings in gnome-screensaver-preferences: "Activate screensaver when computer is idle" was enabled. I disabled it, and we are waiting for the blank screen to appear again, but this takes time, because I found out that the screen goes to blank randomly (!). Even if there was somebody in front of the notebook and was using the ex.: USB mouse.. strange.. I will update the Q/accept the good answer if this helps:D
UPDATE#2: Until the outcome the xset -q output is this:
[root@HOSTNAME ~]# xset -q Keyboard Control: auto repeat: on key click percent: 0 LED mask: 00000000 XKB indicators: 00: Caps Lock: off 01: Num Lock: off 02: Scroll Lock: off 03: Compose: off 04: Kana: off 05: Sleep: off 06: Suspend: off 07: Mute: off 08: Misc: off 09: Mail: off 10: Charging: off 11: Shift Lock: off 12: Group 2: off 13: Mouse Keys: off auto repeat delay: 500 repeat rate: 30 auto repeating keys: 00ffffffdffffbbf fadfffefffedffff 9fffffffffffffff fff7ffffffffffff bell percent: 50 bell pitch: 400 bell duration: 100 Pointer Control: acceleration: 2/1 threshold: 4 Screen Saver: prefer blanking: yes allow exposures: yes timeout: 0 cycle: 0 Colors: default colormap: 0x20 BlackPixel: 0 WhitePixel: 16777215 Font Path: catalogue:/etc/X11/fontpath.d,built-ins DPMS (Energy Star): Standby: 0 Suspend: 0 Off: 0 DPMS is Enabled Monitor is On [root@HOSTNAME ~]#