Re: [SUCCESS] Setup a Nvidia multiseat
Hugo Vanwoerkom wrote:
Floris wrote:
Op Sun, 10 Aug 2014 04:32:00 +0200 schreef Hugo Vanwoerkom
hvw59...@care2.com:
snip
Could you elaborate? You mean that if you connect, lets say a ps/2
keyboard and an USB keyboard, 2 Nvidia video cards with 2 monitors
attached and 2 USB mice and I run systemd, then it will figure out
how to make a 2-seater out of this. Meaning 2 users logged on
simultaneously. Surely you must set up a proper xorg.conf, how much
should it contain? Have you actually tried this or is it your
conclusion that systemd ought to do this?
Hugo
Three steps are necessary:
1 - Create a /etc/X11/xorg.conf.d/90-nvidia.conf
Unfortunately, this step is always required for a Nvidia card, only
the MatchSeat option has to be added.
(note, I don't have a xorg.conf file)
cat /etc/X11/xorg.conf.d/90-nvidia.conf
Section Device
Identifier Seat0
Driver nvidia
BusID PCI:1:0:0
Option ProbeAllGpus FALSE
MatchSeat seat0
EndSection
Section Device
Identifier Seat1
Driver nvidia
BusID PCI:2:0:0
Option ProbeAllGpus FALSE
MatchSeat seat1
EndSection
2 - Tag the Nvidia card for seat1 as a master-of-seat
This step is a litter harder. Since you have to figure out where your
Nvidia card is. If your card has hdmi you can find the location by
looking at the sound card.
$ loginctl seat-status seat0
...
├─/sys/devices/pci:00/:00:05.0/:02:00.1/sound/card1
│ sound:card1 NVidia
...
The video part will be
/sys/devices/pci:00/:00:05.0/:02:00.0
Write an udev rule
cat /etc/udev/rules.d/72-seat-1.rules
SUBSYSTEM==pci,
DEVPATH==/devices/pci:00/:00:05.0/:02:00.0, TAG+=seat,
TAG+=master-of-seat, ENV{ID_AUTOSEAT}=1, ENV{ID_SEAT}=seat1
reboot or use 'udevadm trigger' to apply the new rule
3 - Attach a mouse, keyboard and soundcard
Use loginctl seat-status seat0 to find your devices and move them to
seat1 with
loginctl attach seat1 your device
If you use a usb-hub for the mouse and keyboard attach the hub, so
every device you plug into the hub will attached to seat1
You can verify your setup with
$ loginctl seat-status seat1
seat1
Sessions: *c2
Devices:
├─/sys/devices/pci:00/:00:05.0/:02:00.0
│ [MASTER] pci::02:00.0
├─/sys/devices/pci:00/:00:05.0/:02:00.1/sound/card1
│ sound:card1 NVidia
│
├─/sys/devices/pci:00/:00:05.0/:02:00.1/sound/card1/input14
│ │ input:input14 HDA NVidia HDMI/DP,pcm=3
│
└─/sys/devices/pci:00/:00:05.0/:02:00.1/sound/card1/input15
│ input:input15 HDA NVidia HDMI/DP,pcm=7
...
Finally,
Step 1 is always necessary for a Nvidia card. I don't know if the
nvidia-xconfig program is able to add the MatchSeat option. Don't
use the xorg.conf file, because only seat0 will use it. So the X
server on seat1 will give you an error No device found
Maybe the Nvidia Maintainers will help us in the future with Step 2. I
think it is possible that all Nvidia graphic devices get the
master-of-seat tag. I will ask them.
Step 3 is always required for a multiseat setup. Unless you have a
open source displaylink device.
succes,
Indeed, those 3 steps and we are running a 2-seater again! With Sid,
LXDE and no DM but startx -- -seat seat1, etc.
Thanks to Floris and systemd!
Seat1 does not fare well from a hibernate/resume cycle, had to reboot
this morning to get it going again...
Hugo
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Re: [SUCCESS] Setup a Nvidia multiseat
succes, Indeed, those 3 steps and we are running a 2-seater again! With Sid, LXDE and no DM but startx -- -seat seat1, etc. Thanks to Floris and systemd! Seat1 does not fare well from a hibernate/resume cycle, had to reboot this morning to get it going again... Hugo I haven't test resume and/or hibernate yet. I still have troubles with pulseaudio to respect the attach-to-seat options 1). It proves that systemd is still a young project with all kinds of child deceases. floris 1. funny... systemd and pulseaudio are both made by Lennart Poettering -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of unsubscribe. Trouble? Contact listmas...@lists.debian.org Archive: https://lists.debian.org/op.xkjvdbpi5k9...@jessica.jkfloris.demon.nl
Re: [SUCCESS] Setup a Nvidia multiseat
Floris wrote:
Op Sun, 10 Aug 2014 04:32:00 +0200 schreef Hugo Vanwoerkom
hvw59...@care2.com:
snip
Could you elaborate? You mean that if you connect, lets say a ps/2
keyboard and an USB keyboard, 2 Nvidia video cards with 2 monitors
attached and 2 USB mice and I run systemd, then it will figure out how
to make a 2-seater out of this. Meaning 2 users logged on
simultaneously. Surely you must set up a proper xorg.conf, how much
should it contain? Have you actually tried this or is it your
conclusion that systemd ought to do this?
Hugo
Three steps are necessary:
1 - Create a /etc/X11/xorg.conf.d/90-nvidia.conf
Unfortunately, this step is always required for a Nvidia card, only the
MatchSeat option has to be added.
(note, I don't have a xorg.conf file)
cat /etc/X11/xorg.conf.d/90-nvidia.conf
Section Device
Identifier Seat0
Driver nvidia
BusID PCI:1:0:0
Option ProbeAllGpus FALSE
MatchSeat seat0
EndSection
Section Device
Identifier Seat1
Driver nvidia
BusID PCI:2:0:0
Option ProbeAllGpus FALSE
MatchSeat seat1
EndSection
2 - Tag the Nvidia card for seat1 as a master-of-seat
This step is a litter harder. Since you have to figure out where your
Nvidia card is. If your card has hdmi you can find the location by
looking at the sound card.
$ loginctl seat-status seat0
...
├─/sys/devices/pci:00/:00:05.0/:02:00.1/sound/card1
│ sound:card1 NVidia
...
The video part will be
/sys/devices/pci:00/:00:05.0/:02:00.0
Write an udev rule
cat /etc/udev/rules.d/72-seat-1.rules
SUBSYSTEM==pci,
DEVPATH==/devices/pci:00/:00:05.0/:02:00.0, TAG+=seat,
TAG+=master-of-seat, ENV{ID_AUTOSEAT}=1, ENV{ID_SEAT}=seat1
reboot or use 'udevadm trigger' to apply the new rule
3 - Attach a mouse, keyboard and soundcard
Use loginctl seat-status seat0 to find your devices and move them to
seat1 with
loginctl attach seat1 your device
If you use a usb-hub for the mouse and keyboard attach the hub, so every
device you plug into the hub will attached to seat1
You can verify your setup with
$ loginctl seat-status seat1
seat1
Sessions: *c2
Devices:
├─/sys/devices/pci:00/:00:05.0/:02:00.0
│ [MASTER] pci::02:00.0
├─/sys/devices/pci:00/:00:05.0/:02:00.1/sound/card1
│ sound:card1 NVidia
│
├─/sys/devices/pci:00/:00:05.0/:02:00.1/sound/card1/input14
│ │ input:input14 HDA NVidia HDMI/DP,pcm=3
│
└─/sys/devices/pci:00/:00:05.0/:02:00.1/sound/card1/input15
│ input:input15 HDA NVidia HDMI/DP,pcm=7
...
Finally,
Step 1 is always necessary for a Nvidia card. I don't know if the
nvidia-xconfig program is able to add the MatchSeat option. Don't use
the xorg.conf file, because only seat0 will use it. So the X server on
seat1 will give you an error No device found
Maybe the Nvidia Maintainers will help us in the future with Step 2. I
think it is possible that all Nvidia graphic devices get the
master-of-seat tag. I will ask them.
Step 3 is always required for a multiseat setup. Unless you have a open
source displaylink device.
succes,
Indeed, those 3 steps and we are running a 2-seater again! With Sid,
LXDE and no DM but startx -- -seat seat1, etc.
Thanks to Floris and systemd!
Hugo
--
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