sony-vaio-z-series team mailing list archive

[Craig Blackie <craig@xxxxxxxxxxxxxxxxx>]

So I compiled the module and sony-apcid. I can see all the als values and
it's working but the daemon doesn't change the screen brightness.
Any ideas?
On 23 Apr 2013 15:32, "Mario Di Raimondo" <mario.diraimondo@xxxxxxxxx>
wrote:

> 2013/4/23 Craig Blackie <craig@xxxxxxxxxxxxxxxxx>
>
>> Why did you remove bumblebee?
>>
>
> As I said I'm actually not interested in using nvidia card: I care only of
> battery autonomy. sony-laptop-zseries module can disable nvidia card using
> stamina_speed parameter (I should be possible even without using
> acpi_osi='' kernel parameter...).
>
> In the future, I'll test bumblebee but not now. I want to restore the
> low-power profile of my laptop.
>
> I've just discovered that the suggested changes in sony-acpid source code
> was necessary because (on my tests) I was using 'acpi_backlight=vendor'
> kernel parameter. Removing it the acpi backlight device appears and
> sony-acpid works out-of-the-box. I keept the change on the maxium
> brightness (static int const ACPI_MAX_BRGT = 8;), indeed the suggested
> maximum (15) is an invalid value on my box.
>
> Mario
>