After screwing around with things for a few months I've realized my
system's behavior is stranger than it originally appeared, and perhaps
my problem is a different bug from what's been reported here. Still
running the same system from my prior post (Ubuntu 11.10, Toshiba M700
Laptop, Docking Station, Intel GM965/GL960 Integrated Graphics
Controller) I've found that I can reliably get dual montors to work with
the following procedure:

- Boot with only the VGA monitor attached to the docking station (VGA works 
normally with LVDS1)
- After boot is complete, connect DVI monitor (output switches to DVI, VGA goes 
blank)
- Using arandr disable LVDS1 output (output switches back to VGA)
- Using arandr enable DVI output (dual displays active)
- To make DVI primary, disable/enable VGA output

If I boot with the DVI monitor connected I've found no way to get the
VGA output to work, even if it is detected by the OS.

I don't know how to debug this in any reasonable fashion. If this is
interesting to anyone that can walk me through the relevant data
collection steps I'd be glad to get what information I can.

-- 
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-video-intel in Ubuntu.
https://bugs.launchpad.net/bugs/763688

Title:
  [915GM] S-video output doesn't work in Natty (i386)

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