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Message-ID: <ZWsuiq7zrYS-pDli@archie.me>
Date: Sat, 2 Dec 2023 20:18:02 +0700
From: Bagas Sanjaya <bagasdotme@...il.com>
To: Gert Vanhaerents <gert.vanhaerents@...mail.com>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Linux DRI Development <dri-devel@...ts.freedesktop.org>,
Linux Nouveau <nouveau@...ts.freedesktop.org>
Cc: Karol Herbst <kherbst@...hat.com>, Lyude Paul <lyude@...hat.com>,
Danilo Krummrich <dakr@...hat.com>
Subject: Re: Kernel problem with multiseat on one card
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 is too outdated so i can't use it anymore.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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