Re: GNOME on Wayland current status

[ng0 <ng0@n0.is>]

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Rutger Helling transcribed 4.7K bytes:
> Hi ng0,
> 
> that might be a good idea. I was disturbed to learn that SLiM
> has seemingly been abandoned since 2013
> (source: https://wiki.archlinux.org/index.php/SLiM), so lightdm might
> be a good light-weight alternative as the default display manager. Do
> you know if the lightdm process itself can run on Wayland (like GDM)?

No idea, I've never really used Wayland or Xwayland on any computer other
than my phones. I'd guess the Manual of lightdm would cover this.

> @Mark
> 
> SDDM for the moment cannot run on Wayland yet, which is why it starts
> its own X server.
> 
> I don't think I've had some of the problems you had with GNOME. Could
> you try logging in once via a display manager to GNOME (either X11 or
> Wayland is fine), then logging out, stopping the display manager and
> running the following command on a TTY:
> 
> XDG_SESSION_TYPE=wayland dbus-run-session gnome-session
> 
> One of the problems I've run into myself is that X11 screen lockers
> like xlock don't seem to work. In GNOME GDM is supposed to be the
> screen locker I believe, but I don't think that works at the moment.
> I'll try and see if there's a simple Wayland-based screen locker we
> could use later.
> 
> On Thu, 4 Jan 2018 08:38:58 +0000
> ng0 <ng0@n0.is> wrote:
> 
> > Mark H Weaver transcribed 2.4K bytes:
> > > Hi Rutger,
> > > 
> > > Rutger Helling <rhelling@mykolab.com> writes:
> > >   
> > > > I've sent in a patch (#29943) that adds a small paragraph to the
> > > > documentation about the current situation.
> > > >
> > > > I believe there was a plan to replace SLiM with GDM for the
> > > > default login manager. Getting GDM to work properly should
> > > > probably be the first step since it has great Wayland support.
> > > > From what I know GDM can default to Wayland and falls back
> > > > automatically to X11 if for some reason Wayland doesn't work.
> > > >
> > > > Alternatively we could switch to SDDM as the default for now,
> > > > until GDM is ready.  
> > 
> > What about lightdm? Does it not offer wayland support?
> > We have no service for it yet, but as far as I understand the greeters
> > (like 'lightdm-gtk-greeter') writing your own theme is relatively
> > standardized.
> > 
> > > I recently switched my x86_64 GuixSD laptop to use SDDM, so I could
> > > try out GNOME on Wayland.  It mostly works, but there are still a
> > > few problems:
> > > 
> > > * Even after logging in, SDDM is still visibly running within
> > >   xorg-server on VT 7, while Wayland is running on VT 8.  If you
> > > switch back to VT 7, you can see the login screen still there, with
> > > the clock showing the time that you logged in instead of the
> > > current time.  I'm not sure if there are security implications to
> > > this, but it's certainly a waste of system resources.
> > > 
> > > * SDDM is based on Qt, so it substantially increases the closure
> > > size of the system, as well as memory usage since SDDM and
> > > Xorg-server continues to run in another VT during your entire
> > > session.
> > > 
> > > * The "Sound" panel of the GNOME settings is non-functional.
> > > Whenever I try to change anything at all in that panel, it crashes.
> > > 
> > > * Startup notification for several GNOME programs is broken, e.g.
> > > GNOME Terminal, Files (Nautilus), Videos (Totem), and possibly
> > > other.  When I launch any of those programs, although the program
> > > immediately starts up, GNOME Shell doesn't seem to realize this,
> > > and for quite some time the spinner continues to indicate that the
> > > application is starting up, and it doesn't show up in the Alt-Tab
> > > application switcher.  If you switch to another application, you
> > > cannot switch back to it via Alt-Tab.
> > > 
> > > * As far as I know, we haven't yet themed SDDM to include our
> > > beautiful GuixSD login screen artwork.  It would be a shame to lose
> > > that by default.
> > > 
> > > On the other hand, I'm pleased to report that under Wayland,
> > > tearing no longer occurs during video playback, scrolling, etc.
> > > 
> > > Anyway, it's very exciting to see progress on this, but I'm
> > > reluctant to bring Qt into our default system closure, and
> > > furthermore I'd be inclined to wait until more of the
> > > aforementioned problems are addressed.
> > > 
> > > What do you think?
> > > 
> > >       Mark
> > > 
> > >   
> > 
> 



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