"modesetting" does not use my second card's output
Submitted by mon..@..eal.ca
Assigned to Xorg Project Team
Created attachment 116715 Xorg.2.log
I have two video cards, each connected to one monitor via DVI. The first card is a Poulsbo (using the gma500_gfx kernel module), the second is a displaylink (using the udl kernel module). They both have an entry in /dev/dri.
My xorg.conf is just:
Section "Device" Identifier "Video Device" driver "modesetting" Option "ModeDebug" "true" EndSection
The X server does see both cards (e.g., "xrandr --listproviders" shows the two cards), but only sees (and sets up) the output of the Poulsbo ("xrandr" only lists the DVI-0 output).
The Xorg.log (attached) mentions a DVI-1-0 output connected on the displaylink card, but for some reason it doesn't try to get the EDID and "xrandr" can't use it (e.g. if I try "xrandr --output DVI-1-0 --auto" it tells me there's no such output).
Attachment 116715, "Xorg.2.log":
Version: 7.7 (2012.06)