sony-vaio-z-series team mailing list archive

[Peter Fern <sonylinux@xxxxxxxxxxx>]

You should be able to use nvclock to change brightness.  The following 
is what I use, but I don't ever use the Intel card, so to make it 
generic, you'd want to do some sort of detection in the shell script, 
depending on how you're doing your switching.


# /etc/acpi/events/sony-z-brightness-down
event=sony/hotkey SNC 00000001 00000010
action=/etc/acpi/sonyzbrightbtn.sh down



# /etc/acpi/events/sony-z-brightness-up
event=sony/hotkey SNC 00000001 00000011
action=/etc/acpi/sonyzbrightbtn.sh up



#/etc/acpi/sonyzbrightbtn.sh
#!/bin/sh
nvclock=/usr/bin/nvclock
#log=/tmp/sony-brightness.log
log=/dev/null
ret=0

echo $0 $@ >> $log
case "$1" in
    up)
        $nvclock -S +12% >> $log 2>&1 ;
        ret=$$;
    ;;
    down)
        $nvclock -S -12% >> $log 2>&1 ;
        ret=$$;
    ;;
    *)
        $nvclock -i |grep 'Brightness level' >> $log 2>&1 ;
        ret=$$;
esac

exit $ret


On 10/12/10 06:10, Joël Bourquard wrote:
> Hi Jordi,
>
> Same here, I would be very happy if we could control brightness while 
> running on the NVIDIA card.  I don't know exactly what it takes, maybe 
> the Intel card needs to be accessible from the PCI bus (since, as I 
> heard, the physical brightless control is connected to the Intel 
> card).  As I see it, initializing the Intel card without allocating 
> any of its buffers (ie: initialize it just enough so we can ask it to 
> set the brightness) might be the way to do it.
>
> Maybe we could set up a bounty that would go to the one who publishes 
> a kernel patch and/or generic shell script and instructions to do it 
> ?  That could be nice...
>
>
> On Thu, Dec 9, 2010 at 5:36 PM, Jordi Augé <jordi@xxxxxxxx 
> <mailto:jordi@xxxxxxxx>> wrote:
>
>     Hi,
>
>     I'm a new Vaio Z user, and I've successfully installed Linux as
>     Main OS on a VPCZ11X9/e, after some struggling I've gotten
>     everything working, including hsdpa and graphics switching. My
>     only gripe so far is the inability to control screen brightness
>     when using nvidia graphics.
>
>     Any updates on this issue? what changes will be necessary to
>     implement it?
>
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