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 ~]#
Best Answer
There are some suggestions in this Redhat KB doc.
1. Using GNOME Power Managment Applet
Usually I open up the
GNOME Power Management
applet and disable any dimming etc. when on AC power. Have you done these things as well?Right click on the
GNOME Power Management
icon in your taskbar:Select Preferences from the menu:
Disable dimming and make everything else Never:
2.
gconftool-2
,setterm
&xset
If the above doesn't work out you can always throw this script at it.
Scripts courtousey this ubuntuforum thread.