> Also tried to start x:
> sudo X -core -config xorg-seat1.conf -sharevts :1 -auth
> /var/run/lightdm/root/:1 -nolisten tcp -novtswitch -seat seat1
> X server dosn't start - Fatal server error: (EE) no screens
> found(EE)
>
> After that:
> sudo X -core -config xorg-seat1.conf -sharevts :1 -auth
> /var/run/lightdm/root/:1 -nolisten tcp -novtswitch -seat seat0
> X server started, I was able open gedit on second seat screen from
> terminal (DISPLAY=:1 gedit)
Except for no keyboard and no mouse, your udevadm output looks OK.
That's unexpected, because this really sounds like a udev rules issue
to me (X finds the card when it's looking for seat0 cards, but not
when it's looking for seat1 cards).
It could be an X problem. I just noticed that you're running saucy
(or at least X from saucy). I've never tried saucy; I'm currently
running xserver-xorg-core from the xorg-edgers PPA on raring. I know
there have been some changes with hardware detection between 1.13.3
and 1.14.2 (specifically with nVidia cards; see bug #1190546), so
maybe X is to blame.
You can try the following, but I doubt they will help:
* tag the video cards with 'master-of-seat' (see
<http://www.freedesktop.org/wiki/Software/systemd/multiseat/>):
TAG=="seat", DEVPATH=="/devices/pci0000:00/0000:00:01.0/0000:01:00.0/*",
TAG+="master-of-seat"
TAG=="seat", DEVPATH=="/devices/pci0000:00/0000:00:1c.0/0000:02:00.0/*",
TAG+="master-of-seat"
* relax your multiseat rules to include the HDMI audio on the video
card in seat1:
TAG=="seat", DEVPATH=="/devices/pci0000:00/0000:00:1c.0/*",
ENV{ID_SEAT}="seat1", TAG+="seat1"
Unfortunately, the following might be your best options for figuring
this out:
* downgrade X to the raring build in xorg-edgers
* switch to non-proprietary nVidia drivers
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https://bugs.launchpad.net/bugs/976124
Title:
lightdm multiseat: no login possible
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