weston logind and display managers

[Jasper St. Pierre]

On Sat, May 10, 2014 at 3:44 AM, Pier Luigi <pierluigi.fiorini at gmail.com>wrote:

> 2014-05-09 2:34 GMT+02:00 nerdopolis <bluescreen_avenger at verizon.net>:
> > On Wednesday, May 07, 2014 10:18:00 PM Pier Luigi wrote:
> >> Hi,
> >>
> >> I'm porting sddm (QtQuick based display manager) to Wayland, it's
> >> still work in progress but close to be in a usable state and you can
> >> find it here:
> >>
> >> https://github.com/plfiorini/sddm/tree/wayland
> >>
> >> There are some multiple screen issues specific to how sddm work
> >> compared to wl_fullscreen_shell but at least i've got it to display a
> >> window on the primary screen and that's good enough for now.
> >>
> >> All is going well so far however it's still not capable of running a
> >> weston session.
> >>
> >> I managed to acquire a new tty every time a wayland session is
> >> started, then I set the owner and read/write permission only to the
> >> user that just logged in and open an fd for the tty but weston fails
> >> with the following errors:
> >>
> >> logind: cannot set K_OFF KB-mode on /dev/tty2: Operation not permitted
> >> logind: cannot setup systemd-logind helper (-1), using legacy fallback
> >> fatal: drm backend should be run using weston-launch binary or as root
> >> fatal: failed to create compositor
> >>
> >> Is there something I'm missing in setting up the tty?
> >>
> > Hi.
> >
> > Going by what I know, weston currently has the ability to talk to
> systemd and not have to use weston-launch if you have systemd v209 or
> greater, and it gets compiled in.
> >
> >
> > It looks like Weston is attempting to do use the logind integration, and
> is failing.
> >
> > I think with the systemd integration in Weston you don't have to change
> the tty owner yourself, and I don't know if it that could be the problem
> >
> > And then it looks like weston is failing back to using the standard
> method of requiring weston-launch, and because it can't talk to
> weston-launch, it's exiting.
> >
> > I hope this helps
>
> Without setting owner and permission weston fails before that check
> with permission denied.
> Also without doing an OPENQRY myself from the display manager I don't
> see how I can know which vt XDG_VTNR and PAM_TTY need to be set to.
>
> logind is used for drm and input devices at least it seems to me at a
> first look at it.
>

logind will acquire a XDG_VTNR=auto setting eventually.


> --
> Out of the box experience
> http://www.maui-project.org/
> _______________________________________________
> wayland-devel mailing list
> wayland-devel at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/wayland-devel
>



-- 
  Jasper
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/wayland-devel/attachments/20140510/598b704f/attachment.html>