When I resume from suspend-to-ram often the graphics on my internal screen is dim (around 30-50% intensity). Initially I thought it might be the backlight, but the mouse cursor is not dimmed - only everything else.
I also tried:
xbacklight -set 100
xbacklight -set 50
There is no change in the intensity of neither in the graphics nor the cursor.
A switch to another virtual terminal (CTRL-ALT-F2) and back (CTRL-ALT-F7) also did not change anything.
I attached an external screen and took a screen shot spanning both screens. The screen shot shows everything at full intensity.
xpdyinfo
sees the two spanning screens as a single screen - thus does not treat the internal screen different.
Logging out and logging in again solves the issue, so it is clearly a software issue. The re-login seems to restart Xorg, but I would like to not have to re-login just to get the graphics on my screen un-dimmed.
Hardware: HP EliteBook 8540w
Software Ubuntu 11.10.
Window manager: xfce
How can I un-dim the graphics?
nvidia-settings
, butxgamma
should work regardless. That may reset the CLUT on your card.