[NTLUG:Discuss] Need X Wizard on FC3 / nVidia GeForce2Go / single-view switched to TwinView on Dell Inspiron 4100 Laptop

[Kevin Brannen]

David Simmons, PE wrote:

>Scenario:  laptop in office recently upgraded to FC3 & Evolution 2 (the
>laptop's main purpose) - of which it get's VNC'ed into for email.
>
>On the road:  this laptop becomes 'main machine'.  At one location on
>the road, I was able to setup two monitors (ie. onboard LCD screen and
>external CRT) by installing the nVidia driver and
>configuring /etc/X11/xorg.conf with the TwinView options.
>
>Problem:  I now have multiple xorg.conf files..(only one in use at a
>time - cp the specific one when needed) - one for single view, one for
>original 'nv' driver, one for TwinView.  Problem is that when I copy new
>file and 'change-mode' (ie leaving that office and going back to just
>LCD screen) - the X server doesn't start!  The machine boots...and text
>part starts...but when switching over to graphical
>display...start..start..then total black.  I've even let it sit for an
>hour hoping it would correct itself.  The log of /var/log/xorg.0.log
>that failed (didn't have any ( ) in it?!) - ended with:
>
>(II) NVIDIA(0): NVIDIA GPU detected as: GeForce2 Go
>(--) NVIDIA(0): VideoBIOS: 03.11.01.38.a8
>(--) NVIDIA(0): Interlaced video modes are not supported on this GPU
>(II) NVIDIA(0): Detected AGP rate: 4X
>(--) NVIDIA(0): VideoRAM: 32768 kBytes
>(II) NVIDIA(0): Connected display device(s): DFP-0
>(--) NVIDIA(0): Display device DFP-0: maximum pixel clock at  8 bpp: 350
>MHz
>(--) NVIDIA(0): Display device DFP-0: maximum pixel clock at 16 bpp: 350
>MHz
>(--) NVIDIA(0): Display device DFP-0: maximum pixel clock at 32 bpp: 300
>MHz
>(II) Loading sub module "ddc"
>(II) LoadModule: "ddc"
>(END)
>
>
>Any initial ideas - is it just not as simple as "cp xorg.conf.TWINView
>xorg.conf" in reconfiguring the X display? (rebooting machine after file
>copy)?!?
>  
>

Assuming each was working separately, and was saved off separtely, then 
yes.  Just copy the one you want to xorg.conf (on my system that's a 
symlink to XF86Config, but whatever...), then restart X, no need to reboot.

If you got there via runlevel 3 then startx, exit X so you're back to 
the prompt and run startx again and the new configs will be used.

If you got there via runlevel 5 (you logged in via xdm), then exit out 
of that so you're back to the xdm login screen and relogin.  You'll have 
a new X server that way.

If you're having problems getting it to come up, boot into runlevel 3 
(enter "3" at the grub prompt), then try "X -probeonly" which will check 
your values, and tell you about errors (e.g. no usuable modes, missing 
screens, etc.).  Fix those and try again until that command gives no 
errors; then try "startx".  Also check your ~/.xsession-errors file to 
see if there's any useful messages in there.

HTH,
Kevin