Comment 68 for bug 1251281

Hi there:

I was also affected by this type of back when attemtping to connecto to a Lubuntu 14.04 server with X2Go server there (and from a Ubuntu 14.04 with Unity and X2Go client, in case this matters). Things were working as expected yesterday (no patches needed), when I was setting up the whole server (X2Go, plus a few other server settings needed for ISPConfig, Backintime, etc)

Since today I could not login thorugh X2Go using the same connetion to LXDE that I was using yesterday (message shown today just after the connection attempt: "Unable to execute: startlxde"), I found this bug report, and after enabling the extra repo trusty-proposed, I installed the gnome-session-bin from there and gnome-session-flashback from standard ubuntu repos. But it was not enough, it seems: I could see the screen a little bit more evolved (blueish instead of fully black as before), but not enough. The errors shown server side at ~/.xsession-x2go-errors were the ones shown in the attached document, corresponding to the attempts to connect with a custom-desktop definition as:

gnome-session --session=gnome-flashback --disable-acceleration-check

After adding the repo ppa:rtandy/flashback, and upgrading packages gnome-desktop3-data & libgnome-desktop-3-7, I was able to connect again with X2Go and standard LXDE as a session, and no more errors shown in the ~/.xsession-x2go-errors.

My commands in case anyones is looking for easy copy&paste of workaround:

sudo add-apt-repository ppa:rtandy/flashback
sudo apt-get update
sudo apt-get upgrade gnome-desktop3-data libgnome-desktop-3-7

I wonder if the addition of trusty-proposed was really necessary.