I believe this is just a different behavior in caja itself. You see, in both cases there is already a caja process running. In bionic's version, if you run caja again, it doesn't bring up a new copy, but instead uses the existing one to spawn the new windows:
ubuntu@bionic-mate:~$ ps fxaw|grep caja|grep -v grep 10308 ? Sl 0:01 \_ caja ubuntu@bionic-mate:~$ caja ubuntu@bionic-mate:~$ ps fxaw|grep caja|grep -v grep 10308 ? Sl 0:01 \_ caja ubuntu@bionic-mate:~$ caja ubuntu@bionic-mate:~$ ps fxaw|grep caja|grep -v grep 10308 ? Sl 0:01 \_ caja ubuntu@bionic-mate:~$ But I have many new windows opened already. In xenial, I do get new processes: ubuntu@xenial-mate:~$ caja & [1] 2764 ubuntu@xenial-mate:~$ Initializing caja-open-terminal extension /usr/lib/python2.7/dist-packages/gi/overrides/Gtk.py:50: RuntimeWarning: You have imported the Gtk 2.0 module. Because Gtk 2.0 was not designed for use with introspection some of the interfaces and API will fail. As such this is not supported by the pygobject development team and we encourage you to port your app to Gtk 3 or greater. PyGTK is the recomended python module to use with Gtk 2.0 warnings.warn(warn_msg, RuntimeWarning) sys:1: PyGIWarning: Caja was imported without specifying a version first. Use gi.require_version('Caja', '2.0') before import to ensure that the right version gets loaded. Initializing caja-main-menu extension ** Message: Initializing gksu extension... ps fxaw|grep caja|grep -v grep 2764 pts/8 Sl 0:00 \_ caja 2338 ? Sl 0:00 \_ caja This is definitely not a problem with openssh, and one could argue caja is behaving like intended, but I'll leave that for others to decide. Marking the openssh task as invalid. ** Changed in: openssh (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to openssh in Ubuntu. https://bugs.launchpad.net/bugs/1815318 Title: mate 18.04.1 xserver won't open caja on local machine Status in ubuntu-mate: New Status in caja package in Ubuntu: New Status in openssh package in Ubuntu: Invalid Bug description: Steps to reproduce: 1. Have installed Ubuntu MATE 18.04 LTS (you know its hostname and IP - i.e. 192.168.1.162) 2. Install SSH server on Ubuntu MATE 18.04 LTS 3. Open terminal on other remote system (client) and execute command to run Caja over X forwarding: ssh -X user@192.168.1.162 caja Expected results: * Caja is shown on remote (client) screen with window title *folder (on hostname)* Actual results: * Caja is not shown on remote (client) screen, but launches on server locally. Note: this works normally if server runs Ubuntu MATE 16.04 LTS, but fails with 18.04 LTS. --- Original description below: I can open a remote terminal using ssh -X 192.168.1.162. All other gui's that I've tested opened locally except the file manager Caja. When issuing caja in the remote terminal, I get nothing locally. Caja does open on the remote machine however, just not locally. The ssh -X 18.04.1 client still works connecting to a mate 16.04 server. I've tested this on numerous mate 18.04 clients, two 16.04 servers and two 18.04 servers, all mate. Something is wonky with caja on an 18.04.1 server. Please let me know if I can provide any more information. The only file manager I've tested that works is an X file manager, xfimage. X2go works and connects to servers, SSH Connect to Server works, why isn't the remote X terminal working using caja? To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-mate/+bug/1815318/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp