Ubuntu
gnome-power-manager package

  1. Bug #249568
  2. Comment #13

Comment 13 for bug 249568

Revision history for this message
In , Lafeuil-gmail (lafeuil-gmail) wrote :

I thought a lots about this problem and I checked in differents projects (PowerDevil for KDE and Gnome Power Management) to see how the screen is switched off.
This projects use the DPMS function to switch off the screen (define in X11/extensions/dpms.h)

The problem on Ibook is that the screen's power is controled by Power Management Unit (PMU). There is a module on Linux system. You can control this device with /dev/pmu.

Do you think radeon driver must control PMU or each desktop power management (Powerdevil, GPM...) must control PMU themselves?

Thanks in advance for your help.