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I'm trying to configure a multiseat setup on a desktop PC with

  • two keyboards
  • two mice
  • two monitors attached to the same graphics card (Nvidia NVS 310)

Using these instructions I managed to make LightDM start two seats and udev will exclusively assign the same mouse and keyboard to the same seat every time.

Problem: udev could assign a graphics card exclusively to one seat, but there's only one card. udev (I think) cannot assign one monitor to one seat.

Wish: I'd like to solve this without buying a second graphics card, as this affects a lot of PCs in my pool.

Idea: xorg.conf allows to configure separate X Screens for every monitor (see e.g. NVIDIA's manual). As far as I understand, every X Screen get's it's own X Server.

Now is it possible to assign an X Screen exclusively to one LightDM seat?

  • This is my exact problem. Did you find a solution thus far? It looks like the only solution is to create two X screens but I really don't see how to assign each screen to a specific seat... – Alexis Wilke Nov 10 '14 at 5:28
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    @AlexisWilke I bought a second Nvidia card ... – arney Nov 11 '14 at 15:55

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