ubuntu-multiseat team mailing list archive

[Daniel J Blueman <daniel@xxxxxxxxx>]

On 3 March 2014 23:26, Laércio de Sousa <lbsousajr@xxxxxxxxx> wrote:
> Em 03/03/2014 12:19, "Daniel J Blueman" <daniel@xxxxxxxxx> escreveu:
>> On 3 March 2014 22:52, Laércio de Sousa <lbsousajr@xxxxxxxxx> wrote:
>> > Em 02/03/2014 17:38, "Laércio de Sousa" <lbsousajr@xxxxxxxxx> escreveu:
>> >> Em 02/03/2014 16:22, "Daniel J Blueman" <daniel@xxxxxxxxx> escreveu:
>> >> > Using Ubuntu 13.10 i686 and the superb work in the ubuntu-multiseat
>> >> > PPA, I run a configured X server on a dual-output Intel GPU (started
>> >> > from a modified lightdm upstart script [1]):
>> >> > # /usr/bin/Xorg :0 -nolisten tcp vt7
>> >> >
>> >> > then start configured [2] lightdm, which in turn runs the Xephyr
>> >> > wrapper [3]. Both user sessions start; so far so good.
>> >> >
>> >> > Since I need to also attach touchscreen and sound to the screens, I
>> >> > have to use udev tags, so I assign a mouse the 'seat1' tag [4,5] and
>> >> > it isn't listed in 'loginctl seat-status seat0' as expected, but it
>> >> > doesn't move the cursor on the second head (or first).
>> >> >
>> >> > loginctl shows only a single seat, despite both Xephyr servers being
>> >> > passed '-seat seat0' and '-seat1' (which isn't listed in 'Xephyr
>> >> > -help):
>> >> > $ loginctl list-seats
>> >> > SEAT
>> >> > seat0
>> >> >
>> >> > 1 seats listed.
>> >> >
>> >> > Any idea what I'm missing?
>> []
>> >> In order to create a new seat in logind, you need to have at least one
>> >> device udev-tagged as master-of-seat attached to it. Try to write a
>> >> udev
>> >> rule that tags one of your seat1 devices as master-of-seat.
>> >
>> > Moreover, you also need a Xephyr built with configure option
>> > --enable-kdrive-evdev (like the one available in Multiseat PPA). Then
>> > you
>> > need to pass explictly the devpaths of your input devices to Xephyr with
>> > options -keybd and -mouse. Xephyr doesn't recognize option -seat
>> > directly.
>>
>> Yes, that seems to be what I'm finding. The updated udev rules [1]
>> work nice [2], but the mouse from the Xephyr seat0 can move onto the
>> seat1 screen, despite:
[]
>> For the system I'll be setting up, there will be three touchscreen
>> monitors with sound via HDMI on a triple-output Intel GPU, so I'm out
>> of luck with the -mouse and -keybd options.
>>
>> Maybe you or Richard know if anyone has had any luck with eg MDM or
>> other solutions (Wayland?), rather than Xephyr?
>
> Well... I'm working on a binary wrapper for Xephyr (see
> http://launchpad.net/multi-seat-xephyr) that does almost everything you
> want. I've used it quite well in openSUSE, but I didn't package it for
> Ubuntu yet. Maybe I can build the Ubuntu package this week.

Wow, that's a good plan. I'll take a look into this, and as a backup,
see if I can get Weston (Wayland) running nicely, as it'll have much
less overhead.

Thanks again,
  Daniel
-- 
Daniel J Blueman