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Re: Open new session with same user (in GDM)

Le 21/02/2013 00:32, Mark Allums a écrit :



-----Original Message-----
From: Kent West [mailto:westk@acu.edu]
Sent: Wednesday, February 20, 2013 4:52 PM
To: debian-user@lists.debian.org
Subject: Re: Open new session with same user (in GDM)

On 02/20/2013 04:07 PM, Alois Mahdal wrote:

Hello to all!

How do I create two same-user sessions from GDM?

Say I'm logged in in Xfce (which I normally use, therefore have
many windows / apps open) and want to quickly report a bug. But
before I do that, I want to check if the same happens in GNOME.

xfswitch-plugin ("User switching" in Panel item menu), gets me
to the GDM, but even if I choose my username and "Gnome classic"
session, typing my password only brings me to the old Xfce4
session (i.e. the "session" option in GDM is ignored).

Thanks,
aL.

P.S.: While typing this, I realized that 90% of these cases can
be solved by creating a new temporary user, which is way more
correct way of bug reporting.  However, in some cases (hard to
reproduce bugs, missing privileges to create user...) that might
not be the solution.


  From GDM? I don't know.

But you can shell out (via Ctrl-Alt-F1). login there, and start a new X
session with something like

# startx /usr/bin/gnome-session -- :2

It's been so long that I don't remember if this is the exact correct
syntax, but I believe it is. No guarantees as to what might happen
though with two different DEs reading/writing to the same user account
space.


The latter would mostly work, except possibly with something leading to some
obscure race condition, solvable with proper use of lock files.  Open files
being edited may come out with competing versions, but last written wins if
the thing is properly multi-instance, like gedit.  If single instance only,
you would get errors and bailouts trying to start a second instance (of a
gtk or Qt app, forex).

Just a little guessing.

As far as starting a new session at GDM, wouldn't it be like starting any
other session with GDM?  Just choose your window manager+DE with the
pulldown menu?  What am I missing?
Isn't there one only dbus daemon per user, daemon on which gconf is based, which would prevent several sessions by same user ?
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