On Thu, Sep 3, 2015, 3:46 PM Floris <<a href="mailto:jkfloris@dds.nl">jkfloris@dds.nl</a>> wrote: <blockquote>> > I was missing one piece of the puzzle. My USB dock station is > Plugable® UD-3900 USB 3.0 > > -------------------------------------------------------- > 1- > I had to install the kernel driver for it, following instructions per > this displaylink forum[0]. Once the .rpm package installed, I could > verify: > $ lsmod | grep evdi > > evdi 36864 0 > drm_kms_helper 122880 2 evdi,nouveau > drm 331776 10 ttm,evdi,drm_kms_helper,nouveau > > > # ll /lib/modules/$(uname -r)/extra/evdi.ko > -rw-r--r--. 1 root root 63072 3 sept. 14:29 > /lib/modules/4.1.6-200.fc22.x86_64/extra/evdi.ko > > ------------------------------------------------ > 2- > Now $ loginctl seat-status seat0 returns something more interesting: > > ├─/sys/devices/platform/evdi.0/drm/card1 > │ drm:card1 > > So I guess now I have indeed two cards. > Lets make things clear. The usb dock will be your second seat. I think the next steps will be enough: loginctl attach seat1 /sys/devices/platform/evdi.0/drm/card1 loginctl attach seat1 /the path to the usb3 hub everything you didn't attach with loginctl or with an udev rule will be part of seat0. So if your nvidia card is for seat0 you don't have to write a rule for it. </blockquote> Ok. So it would be indeed much simpler than first thought. Will try this later when I will get hand on the Fedora box. Thank you so much for your clarifications. <blockquote> success, floris _______________________________________________ systemd-devel mailing list <a href="mailto:systemd-devel@lists.freedesktop.org">systemd-devel@lists.freedesktop.org</a> <a href="http://lists.freedesktop.org/mailman/listinfo/systemd-devel">http://lists.freedesktop.org/mailman/listinfo/systemd-devel</a> </blockquote>