Bug 280813

Summary: powerdevil adjust LCD brightness not in the minimal step hardware supported.
Product: [Unmaintained] solid Reporter: Luc <klizet>
Component: powermanagement-daemonAssignee: Dario Freddi <drf>
Status: RESOLVED DUPLICATE    
Severity: normal CC: lamarque
Priority: NOR    
Version First Reported In: unspecified   
Target Milestone: ---   
Platform: Chakra   
OS: Linux   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:

Description Luc 2011-08-26 03:43:14 UTC 
Version:           unspecified (using KDE 4.7.0) 
OS:                Linux

The laptop I used is thinkpad X201 with a 15 step brightness LCD screen. When pressed Fn+Home(XF86MonBrightnessUp) or Fn+End(XF86MonBrightnessDown), the brightness of LCD screen changed with a nice OSD.

But I found the adjustment step quite differs with minimal valve acpi reports. From 0 to 100, use xbacklight can step in 15 states while powerdevil in 7 states.

I think powerdevil use its algorithm to perform adjustment. Sometimes I have to manually adjust screen brightness using xbacklight because powerdevil fail to get into satisfying state. IMHO, a fine tuning will be very welcome.

Reproducible: Always

Steps to Reproduce:
A LCD screen within 15 brighness step.
KDE 4.7.0
Press XF86MonBrightnessUp and XF86MonBrightnessDown.

Actual Results:  
Powerdevil will work but not in the minimal valve.

Expected Results:  
Minimal valve as hardware supported.
Comment 1 Luc 2011-08-26 03:47:56 UTC 
Sorry for my mistake chosen to networkmanagement-daemon. Please move it to powermanagement-daemon. It's my fault.
Comment 2 Dario Freddi 2011-09-30 12:12:50 UTC 

*** This bug has been marked as a duplicate of bug 276482 ***