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<H1>[Mageia-dev] Problem with gdm metacity again</H1>
<B>JA Magallon</B>
<A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20Problem%20with%20gdm%20metacity%20again&In-Reply-To=%3C20110907130325.0bd4c65d%40werewolf.home%3E"
TITLE="[Mageia-dev] Problem with gdm metacity again">jamagallon at ono.com
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<I>Wed Sep 7 13:03:25 CEST 2011</I>
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<PRE>On Wed, 7 Sep 2011 13:01:39 +0300
Shlomi Fish <<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">shlomif at shlomifish.org</A>> wrote:
><i> Hi J. A.,
</I>><i>
</I>><i> On Wed, 7 Sep 2011 11:42:33 +0200
</I>><i> JA Magallon <<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">jamagallon at ono.com</A>> wrote:
</I>><i>
</I>><i> > On Wed, 7 Sep 2011 11:15:21 +0200
</I>><i> > JA Magallon <<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">jamagallon at ono.com</A>> wrote:
</I>><i> >
</I>><i> > > Hi...
</I>><i> > >
</I>><i> > > This old problem has surfaced again:
</I>><i> > >
</I>><i> > > .xsession-errors:
</I>><i> > >
</I>><i> > > ...
</I>><i> > > Window manager warning: Screen 0 on display ":0" already has a window manager; try using the --replace option to replace the current window manager.
</I>><i> > > Window manager warning: Screen 0 on display ":0" already has a window manager; try using the --replace option to replace the current window manager.
</I>><i> > > ...
</I>><i> > >
</I>><i> > > I get only the nautilus desktop, with two black bars on top and bottom of the screen.
</I>><i> > > If I launch a terminal, 'gnome-shell --replace' works fine.
</I>><i> > >
</I>><i>
</I>><i> I reported this bug here:
</I>><i>
</I>><i> <A HREF="https://bugs.mageia.org/show_bug.cgi?id=2628">https://bugs.mageia.org/show_bug.cgi?id=2628</A>
</I>><i>
</I>><i> I can reproduce it here on my x86-64 Mageia Linux Cauldron laptop.
</I>><i>
</I>><i> Regards,
</I>><i>
</I>><i> Shlomi Fish
</I>><i>
</I>><i> > > Any idea ?
</I>><i> > > Can it be some personal setting ?
</I>><i> > >
</I>><i> > > TIA
</I>><i> >
</I>><i> > Digging a bit more, something is wrong detecting acceleration.
</I>><i> > In GDM log:
</I>><i> >
</I>><i> > gnome-session[4752]: DEBUG(+): fill: *** Looking if /usr/share/gnome-session/sessions/gdm-shell.session is a valid session file
</I>><i> > gnome-session[4752]: DEBUG(+): fill: *** Launching helper 'bash -c "gnome-shell --help | grep -q gdm-mode && /usr/lib64/gnome-session-check-accelerated"' to know if session is runnable
</I>><i> > gnome-session-is-accelerated: No hardware 3D support.
</I>><i> > gnome-session-check-accelerated: Helper exited with code 256
</I>><i> > gnome-session[4752]: WARNING: Session 'gdm-shell' runnable check failed: Exited with code 1
</I>><i> > gnome-session[4752]: DEBUG(+): fill: *** Session is not runnable
</I>><i> > gnome-session[4752]: DEBUG(+): fill: *** Getting session 'gdm-fallback'
</I>><i> >
</I>><i> > This is for GDM's own session.
</I>><i> > The same happens for user.
</I>><i> >
</I>><i> > Any ideas ? How can I check why this fails ?
</I>><i> > Its a netbook with Intel graphics, so it uses Mesa.
</I>><i> >
</I>><i> > Will check on an nvidia system too.
</I>><i> >
</I>
I did, and everything works fine. I even discovered that GDM looks different
when acceleration is available ;)).
So these are two separate problems:
- Acceleration detection on some systems, from my limited tests, it works on
nVidia (32bit, will check 64 shortly), and fails on intel (mesa???) graphics.
This can be a bug report for gnome-session (/usr/lib64/gnome-session-check-accelerated*)
or for Mesa if it's it what breaks things.
- In full mode, gnome-shell from the user replaces gnome-shell from gdm.
But in fallback mode, gnome-shell can't replace GDM's metacity.
><i> > TIA
</I>><i>
</I>><i>
</I>><i>
</I>
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