Comment 0 for bug 206921

Binary package hint: gnome-power-manager

adjusting the brightness doesn't work. a brightness feedback widget appears but is empty, and brightness remains at 100%. This is true whether using the keys, or plugging in/unplugging a/c power.

The following is the output from gnome-power-manager:

[hal_device_condition_cb] gpm-button.c:391 (22:13:09): condition=ButtonPressed, details=brightness-down
[emit_button_pressed] gpm-button.c:335 (22:13:09): emitting button-pressed : brightness-down
[button_pressed_cb] gpm-manager.c:999 (22:13:09): Button press event type=brightness-down
[button_pressed_cb] gpm-srv-screensaver.c:167 (22:13:09): Button press event type=brightness-down
[button_pressed_cb] gpm-backlight.c:563 (22:13:09): Button press event type=brightness-down
[gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:108 (22:13:09): ERROR: Method "GetBrightness" with signature "" on interface "org.freedesktop.Hal.Device.LaptopPanel" doesn't exist

*** WARNING ***
[gpm_brightness_lcd_get_hw] gpm-brightness-lcd.c:113 (22:13:09): GetBrightness failed!
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:155 (22:13:09): Setting 0 of 117
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:165 (22:13:09): ERROR: Method "SetBrightness" with signature "i" on interface "org.freedesktop.Hal.Device.LaptopPanel" doesn't exist

*** WARNING ***
[gpm_brightness_lcd_set_hw] gpm-brightness-lcd.c:170 (22:13:09): SetBrightness failed!
[gpm_brightness_lcd_down] gpm-brightness-lcd.c:402 (22:13:09): emitting brightness-changed (0)
[brightness_changed_cb] gpm-backlight.c:755 (22:13:09): Need to display backlight feedback value 0
[gpm_feedback_display_value] gpm-feedback-widget.c:144 (22:13:09): Displaying 0.000000 on feedback widget
[gpm_refcount_add] gpm-refcount.c:100 (22:13:09): refcount now: 1
[gpm_refcount_add] gpm-refcount.c:101 (22:13:09): non zero, so sending REFCOUNT_ADDED
[brightness_changed_cb] gpm-backlight.c:759 (22:13:09): emitting brightness-changed : 0
[button_pressed_cb] gpm-info.c:698 (22:13:09): Button press event type=brightness-down
[gpm_refcount_auto_decrement] gpm-refcount.c:74 (22:13:11): zero, so sending REFCOUNT_ZERO
[gpm_feedback_close_window] gpm-feedback-widget.c:134 (22:13:11): Closing feedback widget

and lscpi:
00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)
00:02.1 Display controller: Intel Corporation Mobile 945GM/GMS/GME, 943/940GML Express Integrated Graphics Controller (rev 03)
00:07.0 Performance counters: Intel Corporation Unknown device 27a3 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02)
00:1c.1 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 2 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA IDE Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
01:00.0 Ethernet controller: Marvell Technology Group Ltd. 88E8053 PCI-E Gigabit Ethernet Controller (rev 22)
02:00.0 Network controller: Atheros Communications, Inc. AR5418 802.11abgn Wireless PCI Express Adapter (rev 01)
03:03.0 FireWire (IEEE 1394): Agere Systems FW323 (rev 61)

and uname -a:
Linux tatooine 2.6.24-12-generic #1 SMP Wed Mar 12 23:01:54 UTC 2008 i686 GNU/Linux

package info:
gnome-power-manager:
  Installed: 2.22.0-0ubuntu2
  Candidate: 2.22.0-0ubuntu2
  Version table:
 *** 2.22.0-0ubuntu2 0
        500 http://us.archive.ubuntu.com hardy/main Packages
        100 /var/lib/dpkg/status

release info:
Description: Ubuntu hardy (development branch)
Release: 8.04