[ltp] T22: Turning off backlight from xscreensaver?

Alex Deucher linux-thinkpad@linux-thinkpad.org
Mon, 28 Feb 2005 09:39:35 -0500


On Mon, 28 Feb 2005 14:26:12 +0100, Silvio B=F6hler <sboehler@bluewin.ch> w=
rote:
> Hardware: Thinkpad T22, S3 Savage IX-MV
> Software: kernel 2.6.10, latest ACPI patch, latest ibm_acpi.ko, Debian
> Unstable
>=20
> Since I have switched my power management to ACPI, screen blanking from
> xscreensaver doesn't turn off the backlight anymore. This used to work
> without problems with APM, it seems DPMS is not working on this laptop
> if ACPI is enabled.
>=20
> I can sucessfully control the backlight via
>=20
> echo lcd_[enable|disable] > /proc/acpi/ibm/video
>=20
> and, using the hotkey feature and some script in /etc/acpi/actions, I
> can toggle the screen with Fn-F3.
>=20
> Does anybody have an idea how to turn off the backlight from xscreensaver=
?


You need to use the xorg savage driver from cvs HEAD.  I added panel
dpms support after 6.8.x was out.

Alex

>=20
> Thanks!
> Silvio