Issues with Lenovo W700ds

[Paul Schenkeveld]

Hi,

I've been the proud owner of a Lenovo W700ds dual-screen laptop which
runs quite well under FreeBSD (8.3-STABLE atm.)

There are some issues I haven't been able to solve despite hours and
hours of googling.

The most annoying issue are the backlights of the screens.  I can
adjust the backlight of the main screen using Fn+Home and Fn+End
while in text mode but not while in X11 and I've not been able at all
to control the backlight on the side screen.  Are there any knobs I can
try besides nvidia-settings (which only allows me to adjust brightness,
contrast etc.) and the non-functional (under X11) Fn+Home and Fn+End
keys?

I've not been able to confgure X-windows for three screens (main +
side panels + DVI output).  Any ideas?

This Thinkpad appears to have two audio cards:

  # cat /dev/sndstat
  FreeBSD Audio Driver (newpcm: 64bit 2009061500/amd64)
  Installed devices:
  pcm0: <HDA Conexant CX20561 (Hermosa) PCM #0 Analog> (play/rec)
  pcm1: <HDA Conexant CX20561 (Hermosa) PCM #1 Analog> (play/rec) default

The speaker is on pcm1 (so I have hw.snd.default_unit=1 in sysctl.conf
to make that one default) and the earphone jack is on pcm0.  If I plug
in the earphone, speaker sound stops but to get sound out of the
earphone I have to explicitly use pcm0.  Snd_hda is supposed to be
able to re-route input and output pins but I wouldn't know where to
start fiddling with GPIO pins of the codecs.  Any help much appreciated.

Thanks in advance for any help!

Paul Schenkeveld