On Thu, Nov 30, 2023 at 11:48:24AM +0100, Gert Vanhaerents wrote: > Hi Kernel list, > I'm the IT person of a school, earlier we used multiseatcomputers for the > school, i have maded with a XGL implementation and it works fine but not so > fantastic. The school wants that i build new computers but the XGL project > is too outdated so i can't use it anymore. > > How can i make a multiseatcomputer with more then one user on one card with > systemd? I have asked already to the makers of systemd but they said it's a > kernel problem. > > With Systemd loginctl and the nouveau drivers you have this: > > ─/sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/drm/card0 > │ [MASTER] drm:card0 > │ > ├─/sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/drm/card0/card0-DVI-D-1 > │ │ [MASTER] drm:card0-DVI-D-1 > │ > ├─/sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/drm/card0/card0-HDMI-A-1 > │ │ [MASTER] drm:card0-HDMI-A-1 > │ > └─/sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/drm/card0/card0-VGA-1 > │ [MASTER] drm:card0-VGA-1 > ├─/sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/drm/renderD128 > │ drm:renderD128 > ├─/sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/graphics/fb0 > │ graphics:fb0 "nouveaudrmfb" > > So it will be: > > loginctl attach seat1 /sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/drm/card0/card0-VGA-1 > > For the seat1 (the VGA d-sub output for seat1 and the other HDMI output for > seat0) and of course the mouse and keyboard. > > When you do this, all the graphics outputs are on the second seat (seat1) > and not anymore on the first seat. So i need to move only the VGA output to > seat1 and not all the outputs. Do you expect that GUI output is on both seats? > > > When i install the proprietary Nvidia drivers, i have the following: > > [MASTER] pci:0000:08:00.0 > │ ├─/sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/drm/card0 > │ │ [MASTER] drm:card0 > │ > └─/sys/devices/pci0000:00/0000:00:03.1/0000:08:00.0/drm/renderD128 > │ drm:renderD128 > > ─/sys/devices/platform/efi-framebuffer.0/graphics/fb0 > │ graphics:fb0 "EFI VGA" > > So no VGA, DVI or HDMI items. Then report to the GitHub tracker [1]. Thanks. [1]: https://github.com/NVIDIA/open-gpu-kernel-modules/issues -- An old man doll... just what I always wanted! - Clara
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