On Thu, Nov 30, 2023 at 11:48:24AM +0100, Gert Vanhaerents wrote:
Hi Kernel list,Do you expect that GUI output is on both seats?
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is too outdated so i can't use it anymore.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.
Then report to the GitHub tracker [1].
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.
Thanks.
[1]: https://github.com/NVIDIA/open-gpu-kernel-modules/issues