On Mon, 12 Dec 2011 15:45:40 -0800 Alan Evans <ame.fedora@xxxxxxxxx> wrote: > Hello All! > > The boss dropped one of those DisplayLink USB display adaptors on my > desk today, and I'm drooling at the prospect of having a third monitor > on my devel machine. Oh don't get too excited > screen. But Xorg doesn't seem to care; and my desktop is still limited > to my current two heads, with nary a hint of another display device > available. You need either - A DisplayLink X server module or - Load the USB framebuffer driver (udlfb) with the option "fb_defio=1" and add an xorg.conf for it. You may also need to fiddle with the permissions on /dev/fb1 or wherever it ends up (udev can do this for you) Now the bigger problem is that it's unaccelerated which means if you are using Gnome 3 it'll drop the entire desktop back to the old style of operation. > In the old days, I might have tried to jack with the xorg.conf file, > but that seems to have vanished somewhere along the way while I wasn't xorg.conf still applies but the server defaults are for automatic probing and behaviour. > looking. Has anybody got one of these things to work? How can I tell > Xorg that there's another display out there, longing to be used? Write an xorg.conf just like the old days - put your USB interface in as a fbdev device. Don't expect however to be able to drag windows between the USB interface and the other monitors using a basic setup. Gnome appears to be unable to cope with a single setup of unaccelerated and accelerated displays in Gnome 3, so you may have to fiddle around a bit or use a different desktop. Some people set the main desktop up bigger than their displays and then run a separate server on the USB display and use vnc full screen on it to display that extra chunk full screen on a USB display. Hackish but works fine, and with minimal performance impact. Alan -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
