But it is hard to find real DisplayLink adapters, it took me two random and one informed transaction to get a supported adapter:LogiLink USB to DVI/VGA/HDMI Multi-Display Adapter (UA0077).
This adapter has quite good support in Fedora after installing the xorg-x11-driver-displaylink package.
$ sudo yum install xorg-x11-driver-displaylink $ sudo modprobe sisusbvgaUse
dmesgto find out about the assigned framebuffer-device (fb). Now the driver is available and the appropriate kernel module loaded but you still need to dump the following file into
# /etc/X11/xorg.conf.d/displaylink.conf Section "Device" Option "fbdev" "/dev/fb2" # use the device given in dmesg Identifier "DLCard" Driver "displaylink" EndSection
vgaswitcheroo: Well, I didn't find out much more on the vgaswitcheroo side. I didn't find a way to determin if a monitor is connected to the discrete card, when this card is turned of (it seems that on some setups the integrated card get's "infos" about monitors connected to the discrete card, but not on mine). But I wont continue to poll for a monitor on the discrete card, so I'll just provide some trayicon (or how i's called in the shell slang), which enables the user to switch between the cards.