can not get brightness (gnome brightness applet)

Bug #191161 reported by Craig Huffstetler on 2008-02-12
6
Affects Status Importance Assigned to Milestone
hal (Ubuntu)
Undecided
Unassigned

Bug Description

Power Manager Brightness Applet 2.21.1 on Hardy Current Alpha 4Power Manager Brightness Applet 2.21.1 on Hardy Alpha 4 (up-to-date) Intel 32-bit.

Exact message: "cannot get laptop panel brightness"

This message has appeared since first install of Alpha 4. It appears on first boot, reboot, restart of x server, etc.

I can not manage my display brightness using the keyboard, screen or any other method. I do not think the display and the kernel communication?

It seems that my laptop (IBM Lenovo Z60m) is able to change the brightness settings in the Bios HOWEVER once I boot into Linux this program referenced above (Brightness Applet in Gnome) does not properly talk to ACPI, HAL or anything else.

It means that the system does not know, and cannot change, the brightness of the monitor.

craig@zen:~$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=8.04
DISTRIB_CODENAME=hardy
DISTRIB_DESCRIPTION="Ubuntu hardy (development branch)"

Gnome Power Applets
Power Manager Brightness Applet 2.21.1

Craig Huffstetler (xq) wrote :

This is related to:

https://bugs.launchpad.net/ubuntu/+source/hal/+bug/61184

Request merge or possible reopening?

Craig Huffstetler (xq) wrote :

Affects HAL.

SK (stephantom) wrote :

Assigned to hal. Feel free to change if it turns out to be incorrect.

Caroline Ford (secretlondon) wrote :

I think this is a different bug from bug #61184.

Thank you for taking the time to report this bug and helping to make Ubuntu better. Unfortunately we can't fix it, because your description didn't include enough information.

Please follow the "How to file" procedure described at [WWW] https://wiki.ubuntu.com/DebuggingHal and attach the requested files here.

Changed in hal:
status: New → Incomplete
Paweł (paff) wrote :

IMHO this is the same bug from #61184.
It afects my Thinkpad X61, the osd works, but can't change the brightness.

Kernel: 2.6.24-12-generic

# lshal|grep smbios.system
  smbios.system.manufacturer = 'LENOVO' (string)
  smbios.system.product = '7673WCE' (string)
  smbios.system.serial = 'L3D5404' (string)
  smbios.system.uuid = 'D0C2B101-492C-11CB-BF9B-D8B8EEB42C57' (string)
  smbios.system.version = 'ThinkPad X61' (string)

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