backlight off after resume on Samsung X25

[Anish Mistry]

On Sunday 12 March 2006 12:50, Nate Lawson wrote:
> Karlheinz Eckmeier wrote:
> > I have a problem to resume on a Samsung X25 laptop after putting
> > the system into the S3 sleep modus. The suspend works ok, but
> > after the resume the backlight of the LCD is off.
> >
> > The resume seems to work ok otherwise - the system itself is up
> > and running, it's possible to enter commands on the commandline.
> >
> > I tried to switch back and forth between VTYs and used radeontool
> > to switch the backlight on, but the screen stayed black.
> >
> > Please see the output of dmesg (after boot -v) and "sysctl
> > hw.acpi" below. The output of "acpidump -t -d" may be downloaded
> > from
> >   http://khe.v3consulting.com/khe-SamsungX25.asl
> >
> > Recompiling the asl with iasl worked without any errors and
> > warnings.
> >
> > Further infomation about the system:
> > Laptop:   Samsung X25
> > Graphic:  ATI Mobility Radeon X600
> > OS:	  FreeBSD 6.0
> >
> > I you need more information, please let me know.
> >
> > Any hints to fix this problem are appreciated very much, because
> > I would love to get the S3 mode working.
>
> Try:
>
> * without drm loaded
> * In X or in console mode
> * with acpi_video loaded
> * with acpi_video + dpms patch that was floating around
> * with radeontool
An updated version of the dpms patch that applies cleanly on RELENG_6 
and -CURRENT.

http://am-productions.biz/docs/acpi_video_dpms.patch

-- 
Anish Mistry
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