[Bug 1330252] Re: ubuntu 14.04 ltsp-server /etc/X11/Xsession.d/40-ltsp-server DESKTOP_SESSION breaks lubuntu-desktop login

[Alkis Georgopoulos]

I tested my patch from #3 and it does work, but I don't have access to
commit it because it's in the Ubuntu packaging and not in the upstream
code.

Both /etc/X11/Xsession.d/40-ltsp-server and /opt/ltsp/i386/etc/X11/Xsession.d/40-ltsp-client need to have that one line changed.
So the result would be:

if [ -n "$LTSP_CLIENT" ] && [ -z "$DESKTOP_SESSION" ]; then
    if ([ "$1" = "default" ] || [ -z "$1" ]) && [ "$(readlink /etc/alternatives/x-session-manager)" = "/usr/bin/gnome-session" ]; then
        DESKTOP_SESSION=ubuntu
    elif [ -n "$1" ]; then
        DESKTOP_SESSION=$(grep -l "^Exec=$1\$" /usr/share/xsessions/*.desktop 2>/dev/null | sed -n '1 s,.*/\(.*\)\.desktop,\1,p')
    fi
    export DESKTOP_SESSION
fi

But I really think that Ubuntu should sync its ltsp packaging with
Debian, and that code above should go to X50-dmrc-processing instead.

** Changed in: ltsp (Ubuntu)
     Assignee: (unassigned) => Stéphane Graber (stgraber)

** Changed in: ltsp (Ubuntu)
   Importance: Undecided => Medium

** Changed in: ltsp (Ubuntu)
       Status: Confirmed => Triaged

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https://bugs.launchpad.net/bugs/1330252

Title:
  ubuntu 14.04 ltsp-server /etc/X11/Xsession.d/40-ltsp-server
  DESKTOP_SESSION breaks lubuntu-desktop login

Status in ltsp package in Ubuntu:
  Triaged

Bug description:
  DistroRelease: Ubuntu 14.04
  Package: ltsp-server 5.5.1-1ubuntu2

  
  The following code in `/etc/X11/Xsession.d/40-ltsp-server` causes issues with dash `export ...` expansion as regards LP#139097 :

      DESKTOP_SESSION=$(echo $1 | sed "s/gnome-session --session=//g")

  Given the following `/usr/share/xsessions/Lubuntu.desktop` :

      Exec=/usr/bin/lxsession -s Lubuntu -e LXDE

  Attempting to login to the Lubuntu desktop session results in the
  following error in `~/.xsession-errors` :

      /etc/X11/Xsession: 6: export: -s: bad variable name

  Presumeably due to the `DESKTOP_SESSION` being set above breaking in
  `/etc/X11/Xsession.d/70gconfd_path-on-session` :

      export MANDATORY_PATH=${GCONF_PREFIX}/${DESKTOP_SESSION}.mandatory.path
      export DEFAULTS_PATH=${GCONF_PREFIX}/${DESKTOP_SESSION}.default.path

  Commenting out the culprit DESKTOP_SESSION=... assignment lets me
  login to the Lubuntu desktop again.

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