Bug 396096

Summary: Laptop brightness resets when on battery power
Product: [openSUSE] openSUSE 11.0 Reporter: Brian Cottingham <spiffytech>
Component: Mobile DevicesAssignee: Danny Al-Gaaf <dalgaaf>
Status: RESOLVED FIXED QA Contact: E-mail List <qa-bugs>
Severity: Normal    
Priority: P3 - Medium CC: daniele, dfabian, Donegal-Danny, neiskam, spiffytech
Version: Final   
Target Milestone: ---   
Hardware: All   
OS: Other   
URL: http://devblog.us/lshw.html
Whiteboard:
Found By: --- Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---
Attachments: output of lshal (without cdrom and attached usb-devices)

Description Brian Cottingham 2008-05-30 22:49:31 UTC
When I go on battery power my laptop's brightness keeps resetting to medium. The Fn keys will adjust the brightness but as soon as I stop pressing them it resets. The same if I move the slider in kpowersave. My hardware configuration is at the URL listed with this bug.
Comment 1 Cyril Hrubis 2008-06-02 18:01:58 UTC
What URL do you mind? Which notebook do you have?
Comment 2 Brian Cottingham 2008-06-02 18:09:35 UTC
I have a Dell Inspirin e1405.

http://devblog.us/lshw.html
Comment 3 Daniele Frijia 2008-06-11 15:08:10 UTC
I have the same error (not able to adjust brightness) with a HP Compaq 6910p. If I shutdown kpowersave the adjusting of brightness works fine.
Comment 4 Stefan Ott 2008-06-21 12:22:29 UTC
Same problem here on a Lenovo 3000 N200 0769-E8G, except that it doesn't matter if the machine is running on battery or from the AC-adaptor, the screen brightness resets about two seconds after the adjustment has been made.
Adjusting works normally after closing kpowersave.
Comment 5 David Fabian 2008-06-23 14:16:41 UTC
Same here, dell d520. Both AC and battery modes are affected.
Comment 6 Nikolay Paskov 2008-07-19 19:44:54 UTC
I'm experiencing the same bug with HP 2510p. 
Comment 7 Nikolay Paskov 2008-07-19 19:48:25 UTC
I'm experiencing the same bug with HP 2510p. 
Comment 8 Brian Cottingham 2008-07-23 14:42:55 UTC
The problem has changed recently for me. Rather than always resetting, it sometimes stays the same. However, if I start playing a video with SMplayer or a VirtualBox machine starts/enters X the brightness falls back to dim. Also, when I adjust the brightness my screen cycles through several levels of brightness before arriving at the new level, and sometimes hitting "brightness up" cycles back to a dimmer level. This problem exists on both battery and AC power. 

I can confirm that killing kpowersave resolves all issues. 
Comment 9 Danny Al-Gaaf 2008-10-15 09:27:14 UTC
Please attach the output of lshal for the affected machines (except the HP 2510p, this machine is already fixed)
Comment 10 Daniele Frijia 2008-10-15 09:41:30 UTC
Created attachment 245618 [details]
output of lshal (without cdrom and attached usb-devices)

I switched to powerdevil. Have similar error: After wakeup brightness is reseted.
Comment 11 Danny Al-Gaaf 2008-11-01 20:08:02 UTC
I've added the Dell Latitude D520, Dell Inspiron (e)1405, HP 6910p and the Lenovo 3000N200. 

Submitted patched package for YOU update, bnc#394390 stays as tracker until package released.

You can test the upcomming package with the rpm from here:
http://download.opensuse.org/repositories/home:/dkukawka/openSUSE_11.0/