sony-vaio-z-series team mailing list archive

[Mike <michael.huettemann@xxxxxxxxx>]

Hi,

using Ubuntu 9.04 (Jaunty) amd64 backlight control works without
problem via the brightness applet of the gnome-panel. The [Fn]+[F5] /
[Fn]+[F6] key combinations do not work.

This is a VGN-Z31/WN, btw.

The kernel module version 0.6 works as advertised, except the small
quirks with the Makefile (install and uninstall do not work out of the
box). Power usage drops from 21W below 14W after some tweaking with
powertop.

Cheers
Mike

2009/3/18 Piernicola Oliva <pnclvo@xxxxxxxxx>:
> Hi,
> first of all, thanks so much for your great work!!!
>
> I was able to keep  my VGN-Z21VN/X on for more than 4:30 h!!!
> I'using kubuntu 8.10
>
> Firs I tried http://pashkovsky.com/linux-image-2.6.29-rc5.deb :
> the LED was on and the module worked fine, but kmix crashed and I was not
> able to use sound. The control of backlight worked directly from KDE4.1
> applet (wow).
> Moreover, the total detected RAM was only 3047864 (the same happened with
> the -generic ubuntu kernel)
>
>
> Then I complied kernel 2.6.27.10 using the default .config file but removing
> the standard sony-laptop module and setting  CONFIG_HIGHMEM64G=y.
> Then I compiled sony-laptop-zseries-0.6.tar.bz2 .
> It seems to me that there are two small bugs on
> sony-laptop-zseries-0.6.tar.bz2 :
> 1) in make install, the directory $(KDIR)/updates/ must be already there. On
> my linux it is not and the install fails. If I create the dir everything
> works fine.
> 2) in make uninstall rm sony-laptop.ko $(KDIR)/updates/ doesn't work for me.
> I think it should be rm $(KDIR)/updates/sony-laptop.ko
>
> In this configuratiuon the module worked fine, I got 4072960 total RAM and
> again more than 4:30 hours of life...
> The only thing that didn't work is the use of KDE4.1 applet to control
> backlight (I tried also  xrandr --output LVDS --set BACKLIGHT_CONTROL legacy
> )
> However Eva's suggestion worked:
>
> sudo setpci -s 00:02.0 F4.B=00 ----> zero bright
>
> sudo setpci -s 00:02.0 F4.B=FF ----> max bright
>
> But in this way to use the applet and to automatically change  brightness in
> AC/battery modes. Why the backlight control via KDE applet worked in 2.6.29
> and not in 2.6.27 if sony-laptop module is the same?
>
>
> Thanks
> pier
>
>
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