Comment 0 for bug 36550

On a Dell 630m laptop with an i915GM video card, hotkey-switching (Fn-F8) does
do what it is supposed to do: switching from LFP -> CRT -> LFP & CRT simultaneously.

However, when both the LFP & CRT are on simultaneously, the CRT output is
unusable. The display wobbles back and forth and makes you feel like the
monitor is about to blow up.

From the i855crt documentation (http://sourceforge.net/projects/i855crt) it
appears that this is due to both outputs being enabled from the same pipe.
Using the i855crt userspace program does turn on the crt cleanly (i810switch has
the same problem as the hotkey).

Using the clone option in xorg.conf also turns on the crt cleanly - but when
operating on batteries it would be nice to not have the second output turned on
all the time.

It would clearly be best if the hotkey did the right thing on its own. If there
is some reason not to have it use the second pipe by default on a hot-key
switch, maybe there could be an xorg-option like: CloneOnHotKey "on" ?

Otherwise this card works great for me: no problems with suspend/resume and
dual head (xinerama and two separate screens) works fine. The 855resolution
tool is needed to get the widescreen display working properly.

Thanks for the nice work.