multiple fbdev devices (or: fbdev vs. nvidia)

[Christoph Rissner]

Hi,

I have an nvidia card together with a displaylink (USB) device.

% lspci | grep VGA
01:00.0 VGA compatible controller: nVidia Corporation NV37GL [Quadro 
PCI-E Series] (rev a2)

With xorg 1.8 I can use the nvidia 173xx series driver together with the 
displaylink driver and get a nice Xinerama desktop.

Unfortunately the displaylink driver doesn't work with xorg 1.9, so I 
consider switching to fbdev instead, but fbdev doesn't work together 
with the nvidia driver. Depending on the screen order in xorg.conf there 
is either the displaylink screen or the nvidia screen working, but not both.

Is this related to fbdev, nvidia, or both?
If its a problem with the nvidia driver, is it possible to replace the 
nvidia driver with another instance of fbdev? How would I do that? Just 
replacing the driver in xorg.conf doesn't work, setting the BusID for 
the nvidia device also makes no difference.

Even more, I currently have 2 screens connected to the nvidia card, 
using the fbdev driver there would probably mean to configure a total of 
3 fbdev devices (1 for the displaylink, 2 for the nvidia card), but how 
do I distinguish the 2 driver sections for the nvidia card when I only 
have 1 BusID to set?

I've attached my current xorg config where I try to make the fbdev 
driver work together with the nvidia one.

Thanks,
Christoph
-------------- next part --------------
An embedded and charset-unspecified text was scrubbed...
Name: 20-nvidia.conf
URL: <http://lists.x.org/archives/xorg/attachments/20101029/42b1a541/attachment.ksh>