user changable brightness? [Was: Re: acpi_sony - no powerd, no man page!]

Emanuel Strobl Emanuel.strobl at
Wed Sep 28 05:36:37 PDT 2005

Am Dienstag, 27. September 2005 17:02 CEST schrieb Oliver Fromme:
> Emanuel Strobl <Emanuel.strobl at> wrote:
>  > But now I have the problem that a regular user can't change the
>  > brightness:
>  >
>  > akima:~>6: sysctl -w dev.acpi_sony.0.brightness=5
>  > dev.acpi_sony.0.brightness: 7
>  > sysctl: dev.acpi_sony.0.brightness: Operation not permitted
>  >
>  > Is there a tunable to allow regular users to write to dev. sysctls or
>  > even better, a sysctl MIB security mask to assign "rights" to a
>  > specific MIB?
> How about using "sudo" or "super" (from ports collection)?

Hmm, I never used these but I guess you have to enter the SuperUser 
password. I don't want any user to know that...

I think I had heard of security control mechanisms for sysctl, but I can't 
find anything...

Are there any user-writable sysctl nodes?


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