Hi, I lost the old log, but here's a new one. I can definitely reproduce it. [gpm_screensaver_powersave_idle_changed] gpm-screensaver.c:102 (11:09:26): emitting powersave-idle-changed : (1) [powersave_idle_changed_cb] gpm-idle.c:335 (11:09:26): Received GS powesave idle changed: 1 [gpm_idle_set_mode] gpm-idle.c:98 (11:09:26): Doing a state transition: 1 [gpm_backlight_notify_system_idle_changed] gpm-backlight.c:630 (11:09:26): we were active for 67,170069s [gpm_backlight_notify_system_idle_changed] gpm-backlight.c:633 (11:09:26): changing powersave idle status to 1 [gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:116 (11:09:26): GetBrightness returned level: 0 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:378 (11:09:26): 1. currently set brightness 0,000000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:414 (11:09:26): 2. battery change by -0,000010, brightness 0,000000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:451 (11:09:26): 3. idle change by 0,000000, brightness 0,000000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:471 (11:09:26): 4. ambient scale 1,000000, brightness 0,000000 [gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:116 (11:09:26): GetBrightness returned level: 0 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:479 (11:09:26): values are the same, no action [gpm_info_event_log] gpm-info.c:594 (11:09:26): Adding 2 to the event log [gpm_screensaver_powersave_idle_changed] gpm-screensaver.c:102 (11:09:34): emitting powersave-idle-changed : (0) [powersave_idle_changed_cb] gpm-idle.c:335 (11:09:34): Received GS powesave idle changed: 0 [gpm_idle_set_mode] gpm-idle.c:98 (11:09:34): Doing a state transition: 0 [gpm_backlight_notify_system_idle_changed] gpm-backlight.c:602 (11:09:34): we have just been idle for 8,270927s [gpm_backlight_notify_system_idle_changed] gpm-backlight.c:613 (11:09:34): increasing idle dim time to 60s [gpm_backlight_notify_system_idle_changed] gpm-backlight.c:633 (11:09:34): changing powersave idle status to 0 [gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:116 (11:09:34): GetBrightness returned level: 0 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:378 (11:09:34): 1. currently set brightness 0,000000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:414 (11:09:34): 2. battery change by -1,834213, brightness 0,000000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:451 (11:09:34): 3. idle change by 0,700000, brightness 0,700000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:471 (11:09:34): 4. ambient scale 1,000000, brightness 0,700000 [gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:116 (11:09:34): GetBrightness returned level: 0 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:489 (11:09:34): emitting brightness-changed : 70 [gpm_brightness_lcd_dim_hw] gpm-brightness-lcd.c:267 (11:09:34): new_level_hw=3 [gpm_brightness_lcd_dim_hw_step] gpm-brightness-lcd.c:198 (11:09:34): new_level_hw=3, last_set_hw=0 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:09:34): Setting 0 of 5 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:09:34): Setting 1 of 5 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:09:34): Setting 2 of 5 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:09:34): Setting 3 of 5 [gpm_backlight_sync_policy] gpm-backlight.c:161 (11:09:34): choosing sensible default [gpm_backlight_sync_policy] gpm-backlight.c:163 (11:09:34): laptop, so use GPM_DPMS_METHOD_OFF [gpm_backlight_sync_policy] gpm-backlight.c:195 (11:09:34): BACKLIGHT parameters 0 0 1800, method '4' [x11_sync_server_dpms_settings] gpm-dpms.c:130 (11:09:34): Syncing DPMS settings enabled=1 timeouts=0 0 0 [idle_changed_cb] gpm-manager.c:869 (11:09:34): Idle state changed: NORMAL [gpm_info_event_log] gpm-info.c:594 (11:09:34): Adding 4 to the event log [gconf_key_changed_cb] gpm-conf.c:332 (11:09:34): emitting value-changed : '/apps/gnome-screensaver/power_management_delay' [gconf_key_changed_cb] gpm-screensaver.c:181 (11:09:34): key : /apps/gnome-screensaver/power_management_delay This is from the lowest brightness setting, but it's the same for all higher settings, too. Here's one from medium brightness. [gpm_screensaver_powersave_idle_changed] gpm-screensaver.c:102 (11:14:49): emitting powersave-idle-changed : (1) [powersave_idle_changed_cb] gpm-idle.c:335 (11:14:49): Received GS powesave idle changed: 1 [gpm_idle_set_mode] gpm-idle.c:98 (11:14:49): Doing a state transition: 1 [gpm_backlight_notify_system_idle_changed] gpm-backlight.c:630 (11:14:49): we were active for 30,122765s [gpm_backlight_notify_system_idle_changed] gpm-backlight.c:633 (11:14:49): changing powersave idle status to 1 [gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:116 (11:14:49): GetBrightness returned level: 2 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:378 (11:14:49): 1. currently set brightness 0,400000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:414 (11:14:49): 2. battery change by -0,000010, brightness 0,400000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:451 (11:14:49): 3. idle change by -0,400000, brightness 0,000000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:471 (11:14:49): 4. ambient scale 1,000000, brightness 0,000000 [gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:116 (11:14:49): GetBrightness returned level: 2 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:489 (11:14:49): emitting brightness-changed : 0 [gpm_brightness_lcd_dim_hw] gpm-brightness-lcd.c:267 (11:14:49): new_level_hw=0 [gpm_brightness_lcd_dim_hw_step] gpm-brightness-lcd.c:198 (11:14:49): new_level_hw=0, last_set_hw=2 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:14:49): Setting 2 of 5 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:14:49): Setting 1 of 5 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:14:49): Setting 0 of 5 [gpm_info_event_log] gpm-info.c:594 (11:14:49): Adding 2 to the event log [gpm_screensaver_powersave_idle_changed] gpm-screensaver.c:102 (11:14:56): emitting powersave-idle-changed : (0) [powersave_idle_changed_cb] gpm-idle.c:335 (11:14:56): Received GS powesave idle changed: 0 [gpm_idle_set_mode] gpm-idle.c:98 (11:14:56): Doing a state transition: 0 [gpm_backlight_notify_system_idle_changed] gpm-backlight.c:602 (11:14:56): we have just been idle for 6,330868s [gpm_backlight_notify_system_idle_changed] gpm-backlight.c:613 (11:14:56): increasing idle dim time to 60s [gpm_backlight_notify_system_idle_changed] gpm-backlight.c:633 (11:14:56): changing powersave idle status to 0 [gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:116 (11:14:56): GetBrightness returned level: 0 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:378 (11:14:56): 1. currently set brightness 0,000000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:414 (11:14:56): 2. battery change by -1,143614, brightness 0,000000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:451 (11:14:56): 3. idle change by 0,700000, brightness 0,700000 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:471 (11:14:56): 4. ambient scale 1,000000, brightness 0,700000 [gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:116 (11:14:56): GetBrightness returned level: 0 [gpm_backlight_brightness_evaluate_and_set] gpm-backlight.c:489 (11:14:56): emitting brightness-changed : 70 [gpm_brightness_lcd_dim_hw] gpm-brightness-lcd.c:267 (11:14:56): new_level_hw=3 [gpm_brightness_lcd_dim_hw_step] gpm-brightness-lcd.c:198 (11:14:56): new_level_hw=3, last_set_hw=0 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:14:56): Setting 0 of 5 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:14:56): Setting 1 of 5 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:14:56): Setting 2 of 5 [gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (11:14:56): Setting 3 of 5 [gpm_backlight_sync_policy] gpm-backlight.c:161 (11:14:56): choosing sensible default [gpm_backlight_sync_policy] gpm-backlight.c:163 (11:14:56): laptop, so use GPM_DPMS_METHOD_OFF [gpm_backlight_sync_policy] gpm-backlight.c:195 (11:14:56): BACKLIGHT parameters 0 0 1800, method '4' [x11_sync_server_dpms_settings] gpm-dpms.c:130 (11:14:56): Syncing DPMS settings enabled=1 timeouts=0 0 0 [idle_changed_cb] gpm-manager.c:869 (11:14:56): Idle state changed: NORMAL [gpm_info_event_log] gpm-info.c:594 (11:14:56): Adding 4 to the event log [gconf_key_changed_cb] gpm-conf.c:332 (11:14:56): emitting value-changed : '/apps/gnome-screensaver/power_management_delay' [gconf_key_changed_cb] gpm-screensaver.c:181 (11:14:56): key : /apps/gnome-screensaver/power_management_delay I hope this is useful, and thanks for the tip about disabling dimming - really should have thought of that myself. :) Also, FWIW, disabling dimming does nothing about the brightness changing when playing a movie (it's probably when MPlayer tries to disable the screensaver), but I don't even know if that is relevant to GPM.