<div dir="ltr"><div><div>Arnaud, </div>You must focus on the graphics/fb* syspaths (since they are tagged as [MASTER] in udev/logind), not the drm/card* ones. You must attach the [MASTER] devnode to a new seat in order to create it. </div>BTW, systemd already ships udev rules to set property ID_AUTOSEAT for DisplayLink USB 2.0 Docking Stations, so that you don't need to attach them manually. Maybe these rules should be updated to include USB 3.0 Docking Stations as well. </div><div class="gmail_extra"> <div class="gmail_quote">2015-09-04 13:00 GMT-03:00 arnaud gaboury <<a href="mailto:arnaud.gaboury@gmail.com" target="_blank">arnaud.gaboury@gmail.com</a>>: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On Thu, Sep 3, 2015 at 5:06 PM, arnaud gaboury <<a href="mailto:arnaud.gaboury@gmail.com">arnaud.gaboury@gmail.com</a>> wrote: > > On Thu, Sep 3, 2015, 3:46 PM Floris <<a href="mailto:jkfloris@dds.nl">jkfloris@dds.nl</a>> wrote: > >> >> 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. > > Ok. So it would be indeed much simpler than first thought. </div></div>xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx I can't create a new seat1, no idea why. Here is my current configuration: -nvidia card + nvidia driver + nouveau blacklisted - USB 3 dock station with displaylink driver + systemd service - gdm - systemd 219 --------------------------------------------------------------------------- $ loginctl seat-status Sessions: *1 c1 Devices: ├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/card0 │ drm:card0 ├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/drm/renderD128 │ drm:renderD128 ├─/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/graphics/fb0 │ [MASTER] graphics:fb0 "nouveaufb" ............................................................................ ├─/sys/devices/platform/evdi.0/graphics/fb1 │ [MASTER] graphics:fb1 "evdidrmfb" ├─/sys/devices/platform/evdi.1/drm/card2 │ drm:card2 ├─/sys/devices/platform/evdi.1/graphics/fb2 │ [MASTER] graphics:fb2 "evdidrmfb" ├─/sys/devices/virtual/misc/kvm │ misc:kvm └─/sys/devices/virtual/misc/rfkill misc:rfkill ------------------------------------------------------------------------------------- # loginctl attach seat1 /sys/devices/platform/evdi.1/drm/card2 then same for usb devices $ ls /etc/udev/rules.d 72-seat-drm-platform-evdi_0.rules 72-seat-drm-platform-evdi_1.rules 72-seat-input-pci-0000_00_14_0-usb-0_10_4_1_1_1.rules 72-seat-input-pci-0000_00_14_0-usb-0_10_4_2_1_2.rules 72-seat-usb-pci-0000_00_14_0.rules 72-seat-usb-pci-0000_00_14_0-usb-0_10_4.rules 99-displaylink.rules 99-nvidia_seats.rules NB: All the 72-seat* have been created when I run $ loginctl attache seat1 MyDevice ---------------------------- $ udevadmn info /sys/devices/platform/evdi.1/drm/card2 P: /devices/platform/evdi.1/drm/card2 N: dri/card2 E: DEVNAME=/dev/dri/card2 E: DEVPATH=/devices/platform/evdi.1/drm/card2 E: DEVTYPE=drm_minor E: ID_FOR_SEAT=drm-platform-evdi_1 E: ID_PATH=platform-evdi.1 E: ID_PATH_TAG=platform-evdi_1 E: ID_SEAT=seat1 E: MAJOR=226 E: MINOR=2 E: SUBSYSTEM=drm E: TAGS=:seat:seat1:uaccess: E: USEC_INITIALIZED=160111782 ------------------------------------------------------------ $ cat /etc/udev/rules.d/99-displaylink.rules (shipped with the displaylink .rmp driver) --------------------------------------- ACTION=="add", SUBSYSTEM=="usb", ENV{ID_VENDOR}=="DisplayLink", MODE="0660", RUN+="/bin/systemctl start displaylink.service" ACTION=="remove", SUBSYSTEM=="usb", ENV{ID_VENDOR}=="DisplayLink", RUN+="/bin/systemctl stop displaylink.service" ---------------------------------------------- $ cat /etc/udev/rules.d/99-nvidia_seats.rules ---------------------------------------------------------- # provide a suitable udev rule to tag your NVIDIA card as "master-of-seat" SUBSYSTEM=="drm", KERNEL=="card[0-9]*", ATTRS{vendor}=="0x10de", DRIVERS=="nvidia", TAG+="master-of-seat" SUBSYSTEM=="pci", ATTRS{vendor}=="0x10de", DRIVER=="nvidia", TAG+="seat", TAG+="master-of-seat" ---------------------------------------------------------------- cat /etc/udev/rules.d/72-seat-drm-platform-evdi_1.rules ----------------------------------------------- TAG=="seat", ENV{ID_FOR_SEAT}=="drm-platform-evdi_1", ENV{ID_SEAT}="seat1" ------------------------------------------------- cat /etc/udev/rules.d/72-seat-input-pci-0000_00_14_0-usb-0_10_4_1_1_1.rules -------------------------------------- TAG=="seat", ENV{ID_FOR_SEAT}=="input-pci-0000_00_14_0-usb-0_10_4_1_1_1", ENV{ID_SEAT}="seat1" --------------------------------------------------- # systemctl restart systemd-udev-trigger.service (or even reboot) $ loginctl show-session (two users logged in) SESSION UID USER SEAT 2 1001 Martin seat0 1 1000 Louis seat0 c1 42 gdm seat0 3 sessions listed. $ loginctl list-seats SEAT seat0 1 seats listed. xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx What am I missing? Why can't I create seat1 ? Maybe # rm /etc/udev/rules.d/72* and try again ? Thank you for help. > > Will try this later when I will get hand on the Fedora box. > Thank you so much for your clarifications. > > 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" rel="noreferrer" target="_blank">http://lists.freedesktop.org/mailman/listinfo/systemd-devel</a> > > -- <a href="http://google.com/+arnaudgabourygabx" rel="noreferrer" target="_blank">google.com/+arnaudgabourygabx</a> <div class="HOEnZb"><div class="h5">_______________________________________________ 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" rel="noreferrer" target="_blank">http://lists.freedesktop.org/mailman/listinfo/systemd-devel</a> </div></div></blockquote></div> -- <div class="gmail_signature"><div dir="ltr"><div>Laércio de Sousa </div><div style="text-align:center"><div style="text-align:left">Orientador de Informática</div><div style="text-align:left">Escola Municipal "Professor Eulálio Gruppi"</div><div style="text-align:left">Rua Ismael da Silva Mello, 559, Mogi Moderno</div><div style="text-align:left">Mogi das Cruzes - SP</div><div style="text-align:left">CEP 08717-390</div></div><div>Telefone: (11) 4726-8313</div></div></div> </div>