More information is needed here. 1) Quit xfce4-power-manager with "xfce4-power-manager -q" and start it in no-daemon mode "xfce4-power-manager --no-daemon" to get a log.
2) Track the values in the kernel sysfs, like /sys/class/backlight/<your-machine's-backlight-name>/brightness /sys/class/backlight/<your-machine's-backlight-name>/actual_brightness /sys/class/backlight/<your-machine's-backlight-name>/max_brightness ... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1280227 Title: Brightness controls no longer work after toggling monitor To manage notifications about this bug go to: https://bugs.launchpad.net/xfce4-power-manager/+bug/1280227/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
