[ltp] Can bot use Fn+F7 to switch LCD/CRT on Thinkpad X60s

[Alex Deucher]

On 12/5/06, gulfstream <gulfstream.wang@gmail.com> wrote:
> I want to switch lcd/crt in X window and tty, but xorg.conf is useful to
> xorg. How to do if I want to switch lcd/crt in tty?
>

fn-F7 should work, however, depending ot the mask setting for the ibm
hotkeys, they may be generating acpi events rather than actually
running the bios video switch routines.  It also may be a limitation
of the bios.  The bioses tend to be pretty picky about what modes they
will try on both outputs, especially if you are running vesa fb or
something similar.  Also, the intel chips are not able to drive both
LVDS and the DAC with the same crtc, so in order to do LVDS plus DAC,
you need both crtcs, which may not be possible in text mode.

Alex

>
> gulfstream
>
> 2006/12/5, Richard Neill < rn214@hermes.cam.ac.uk>:
> >   gulfstream wrote:
> > > I have use ibm_acpi module in my kernel( 2.6.18), and I can use Fn+F4 to
> > > suspend to RAM and Fn+F12 to suspend to disk. But the system do not
> > > respond to Fn+F7, so I can not switch the LCD and external CRT.
> > > Moreover, when I run "echo video_switch > /proc/acpi/ibm/video" in the
> > > terminal, no any respond. How to solve this matter?
> > >
> > > My laptop is Thinkpad X60s with Intel 945GM graphics chipsets. The
> > > system is Debian etch with tpb installed.
> > >
> >
> >
> > At least on some machines, it's necessary to enable a flag in xorg.conf,
> > iirc: EnableBiosHotKeys.  Read  man `your-Xorg-driver`.
> >
> > HTH,
> >
> > Richard
> > --
> > The linux-thinkpad mailing list home page is at:
> >
> http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
> >
>
>