Bug 30379

Summary: [SNB] Huron River ATI- Brightness contol up/down does not work for some level when go from level 1 to 20 (max_brightness)
Product: DRI Reporter: Manjeet Singh <manjeet>
Component: DRM/IntelAssignee: Wang Zhenyu <zhenyu.z.wang>
Severity: normal    
Priority: high CC: jbarnes
Version: unspecified   
Hardware: Other   
OS: Linux (All)   
i915 platform: i915 features:
Description Flags
attached the script we used to test level 1 to 20 none

Description Manjeet Singh 2010-09-25 14:44:46 UTC
Bug description: Huron River ATI discrete [1002:6760]- 

System environment: 
-- chipset:00:00.0 Host bridge [0600]: Intel Corporation Sandy Bridge DRAM
Controller [8086:0104] (rev 07)
-- system architecture: i386-bit
-- kernel: 2.6.35-ng #1
-- Linux distribution: fedora based.
-- Machine or mobo model: Huron River discrete ATI

Reproducing steps:
Boot to fedora based linux with kernel 2.6.35.
Increase the brightness level from 1 to 20
or Run the attached brightness.sh script

Actual results:
Brightness increase does not work when go to level 3 to 8 and 10 to 14 and 15 to 18..etc

Additional info:
Comment 1 Manjeet Singh 2010-09-25 14:45:21 UTC
Created attachment 38956 [details]
attached the script we used to test level 1 to 20
Comment 2 Wang Zhenyu 2010-09-25 19:05:42 UTC
Like 30378, this should be ati bug..

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