On Tue, 16.07.13 17:28, Lennart Poettering (lenn...@poettering.net) wrote: > > On Tue, 16.07.13 16:09, Glen Gray (sla...@slaine.org) wrote: > > > Hey guys, > > > > I'm currently working with a Plugable DisplayLink usb hub/adaptor for > > adding multi-seat support to an embedded PC formfactor. > > > > I've been running into difficulties with the changes to GDM and systemd > > with regards to multiseat support. > > > > For GDM, I've patched it to do the following... > > 1) In daemon/gdm-display.c where it currently checks if the seat != seat0. > > Rather than doing "goto out;" immediately, it queries the username. If the > > username is utilising the script method then let the automated login > > proceed. The script method will parse the login name as a script path if it > > ends with | character. > > > > 2) In daemon/gdm-simple-slave.c, rather than using a global level > > GDM_RAN_ONCE_FILE_MARKER, create one per seat. This allows the > > wants_autologin() to return True on a another seat rather than drop through > > to simply start_greeter(). > > > > 3) In daemon/gdm-slave.c, Export the GDM_SEAT_ID for the initial gdm slave > > display. This allows you to check the current seat in the script for item > > 1) above. > > > > That solved my gdm automated login process on the different seats. I've > > emailed the patch to the gdm list. > > > > However, I also ran into a problem with Xorg configurations. > > > > The host system runs on an embedded PC and has an xorg.conf.d Device entry > > for the Intel driver to enable certain options. However, this is global and > > caused problems with the displays on the other seats. e.g. with the second > > seat starting Xorg and looking for the Intel device as described in the > > xorg.conf.d file, rather than using the appropriate Frame-buffer device. > > I've patched the systemd/login/multi-seat-x.c to also pass over a > > -configdir parameter to the Xorg it launches. e.g '-configdir > > /etc/X11/xorg.conf.d/multi-session-x/seat-usb-pci- > > 0000_00_1d_7-usb-0_3_1_4'. I'm not entirely confident that's the correct > > path I should be using. > > I figure both of these issues are better discussed in the gdm and X11 > mailing lists rather than here. > > Note that the "multi-seat-x" tool is on its way, see this thread:
"on its way _out_" is what I wanted to write. > > http://lists.x.org/archives/xorg-devel/2013-July/036866.html > > In this same thread there are discussions about adding a MatchSeat > option to X. This really looks like what you are looking for? With that > in place you could have configuration fragments that only apply to > specific seats rather than all of them? > > Lennart > Lennart -- Lennart Poettering - Red Hat, Inc. _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
