External Display on a 12" powerbook Nvidia GeForce FX

[mert]

I'm trying to get the external display (vga out) working on my powerbook. I'm using fedora 3.92. When I boot the system the external display reads

Initializing fake screen NVDA, display-A
Calling quiesce

...among other things. this is readable until I start X, at which point the external display displays gibberish. The laptop screen is working fine though. Using the display contiguration tool to configure a dual head setup results in a broken xorg.conf file that won't let me start X.

somewhere, I can't remember where, I got the idea that if I can disable the laptop screen at boot time, the external display will work fine. Anyone know what kernel parameters I need to disable the laptop screen?

If I can get this fixed I'll be one step closer to using fedora linux full time. Next will be getting bluetooth mouse and a usb wireless working.
cheers

[huw-l]

This isn't usually a kernel issue. It's usually a problem with X configuratuion. Are you running the Nvidia drivers or the open-source nv drivers?

A look at /etc/X11/xorg.conf may help to diagnose your problem.

[mert]

From the debian-ppc mailing list I learned that
Option "CrtcNumber" "0"
Option "FlatPanel" "0"
In the Device section of xorg.conf allows the vga out to work. Now I have to switch xorg.conf files when I want to switch to the internal monitor. A little clunky, but it works.