Public bug reported: Binary package hint: gnome-power-manager
GPM apparently does not know how to dim the backlight of my Samsung Q45 laptop. [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:365 (20:25:20): no dimming hardware [gpm_backlight_sync_policy] gpm-backlight.c:161 (20:25:20): choosing sensible default [gpm_backlight_sync_policy] gpm-backlight.c:163 (20:25:20): laptop, so use GPM_DPMS_METHOD_OFF [gpm_backlight_sync_policy] gpm-backlight.c:195 (20:25:20): BACKLIGHT parameters 0 0 1800, method '4' This leads to the problems that when going to battery the screen is not dimmed and when the idle timeout kicks in the screen is blanked, but the backlight stays on! The xbacklight tool works just fine with this laptop. I'll attach dmesg and debug output from GPM. ** Affects: gnome-power Importance: Unknown Status: Unknown ** Affects: gnome-power-manager (Ubuntu) Importance: Undecided Status: New ** Tags: q45 -- gpm does not dim backlight on Q45 https://bugs.launchpad.net/bugs/221478 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gnome-power-manager in ubuntu. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs