Kdm session manager

Luca liliana.perossa at fastwebnet.it
Thu Sep 28 05:37:22 BST 2006


James Richard Tyrer wrote:
> Luca wrote:
>   
>> Hi!
>>
>> I have installed kde-3.5.4, xfce4, metacity, gnome-2.14.2 and
>> gnome-2.16.0 and I use kdm as login manager. I created the desktop files
>> for the sessions but I am unable to start gnome-2.16.0.
>> Kde-3.5.4 is installed in /opt/kde-3.5.4 with a symlink /opt/kde
>> pointing to it, gnome-2.14.2 is installed in /opt/gnome-2.14.2 with a
>> symlink /opt/gnome pointing to it, gnome-2.16.0 is installed in
>> /opt/gnome-2.16.0, xfce4 is installed in /usr and metacity is installed
>> in /usr.
>>
>> Since I use to launch dbus-daemon with gnome my gnome-xxx desktop files
>> looks so:
>> gnome-dbus.desktop
>> [Desktop Entry]
>> Encoding=UTF-8
>> Name=GNOME with D-BUS
>> Comment=GNOME Desktop with D-BUS support
>> Exec=dbus-launch --exit-with-session gnome-session
>> TryExec=/usr/bin/dbus-launch
>> Icon=
>> Type=Application
>>
>> gnome-2.16.0-dbus.desktop
>> [Desktop Entry]
>> Encoding=UTF-8
>> Name=GNOME 2.16.0 with D-BUS
>> Comment=GNOME 2.16.0 Desktop with D-BUS support
>> Exec=dbus-launch --exit-with-session /opt/gnome-2.16.0/bin/gnome-session
>> TryExec=/usr/bin/dbus-launch
>> Icon=
>> Type=Application
>>
>> How do I manage to start the different sessions?
>> I also tried to modify /opt/kde-3.5.4/share/config/kdm/Xsession in this way:
>> case $session in
>>   "")
>>     exec xmessage -center -buttons OK:0 -default OK "Sorry,
>> $DESKTOP_SESSION is no valid session."
>>     ;;
>>   failsafe)
>>     exec xterm -geometry 80x24-0-0
>>     ;;
>>   custom)
>>     exec $HOME/.xsession
>>     ;;
>>   default)
>>     exec /opt/kde-3.5.4/bin/startkde
>>     ;;
>>   Gnome-2.14.2)
>>     export BINDIR=/opt/gnome-2.14.2/sbin
>>     export HOME=$HOME/.gnome-2.14.2
>>     export SBINDIR=/opt/gnome-2.14.2/sbin
>>     export LIBEXECDIR=/opt/gnome-2.14.2/lib/gdm
>>     export PATH=/bin:/usr/bin:/usr/X11R7/bin:$GNOMEDIR
>>     exec /opt/gnome-2.14.2/bin/gnome-session
>>     ;;
>>   Gnome-2.16.0)
>>     export BINDIR=/opt/gnome-2.16.0/sbin
>>     export HOME=$HOME/.gnome-2.16.0
>>     export SBINDIR=/opt/gnome-2.16.0/sbin
>>     export LIBEXECDIR=/opt/gnome-2.16.0/lib/gdm
>>     export PATH=/bin:/usr/bin:/usr/X11R7/bin:$GNOMEDIR
>>     exec /opt/gnome-2.16.0/bin/gnome-session
>>     ;;
>>   *)
>>     eval exec "$session"
>>     ;;
>> esac
>> exec xmessage -center -buttons OK:0 -default OK "Sorry, cannot execute
>> $session. Check $DESKTOP_SESSION.desktop."
>>
>> Still I am unable to start gnome-2.16.0, and just a note when I start
>> gnome-2.14.2 it seems to load in background some things of gnome-2.16.0,
>> I have two trash icons.
>>     
>
> If you are going to directly execute "gnome-session" the stuff you put 
> in the: "gnome-xxx.desktop" is not relevant since it is NOT executed.
>
> I don't think that you want to change HOME and I have no idea if setting 
> BINDIR, SBINDIR, & LIBEXECDIR does anything at all except to take up 
> space.  Stuff in the environment doesn't do any good unless something 
> reads it.
>
> What is: GNOMEDIR?  IAC, the directory "/opt/gnome-<version>/bin" needs 
> to go at the _start_ of the PATH.  If there is stuff in: 
> "/opt/gnome-<version>/sbin" you might need to add that as well although 
> normally, only root uses it.
>
> Then, you have two sets of GNOME libraries.  You must use the correct 
> ones.  To control this, you must set the environment variable 
> LD_LIBRARY_PATH.
>
> 	LD_LIBRARY_PATH=/opt/gnome-<version>/lib
> 	export LD_LIBRARY_PATH
>
> There are other issues so I would recommend that rather than putting 
> this stuff in your "Xsession" script that you write a short script to 
> start GNOME -- one script for each version.
>
> I find that to run GNOME that I must set: XDG_CONFIG_DIRS.
>
>   
Thanks James I'll try that, however is it possible to export the
variables in the gnome-<version>.desktop files instead of creating a
script to start one or another?

Luca
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