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?