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Old 04-10-08, 02:19 AM   #52
Registered User
Join Date: Mar 2008
Posts: 3
Angry Re: Brightness control not working with nVidia driver

We are really exausted about this problem, Nvidia tell us more about what's going on!
/proc interface behaves correctly reading and setting values, but with NO EFFECT.
Brightness STILL not working under Linux on

My laptop:
Samsung Q70

My kernel:
(Hardy Heron Ubuntu 8.04)
Linux AFK-47 2.6.24-15-generic #1 SMP Tue Apr 8 00:33:51 UTC 2008 i686 GNU/Linux

My card:
01:00.0 VGA compatible controller: nVidia Corporation GeForce 8400M G (rev a1)

My Driver:
169.16 (x86-32)

My BIOS revision:
Tested not working on both 11ST and 09ST.
09ST downgrade actually fixed other FN keys, but _NOT_ brightness.

Additional Info
root@AFK-47 :~# cat /proc/driver/nvidia/registry
EnableVia4x: 0
EnableALiAGP: 0
NvAGP: 3
ReqAGPRate: 15
EnableAGPSBA: 0
EnableAGPFW: 0
Mobile: 4294967295
ResmanDebugLevel: 4294967295
RmLogonRC: 1
ModifyDeviceFiles: 1
DeviceFileUID: 0
DeviceFileGID: 44
DeviceFileMode: 432
RemapLimit: 0
UseCPA: 4294967295
UseVBios: 1
RMEdgeIntrCheck: 1
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