Robert,

Thank you for the advise, but the are complications...

I use this remote desktop from two different machines. One has native desktop resolution of 4k (didn't have a chance to try your workarounds on it yet) and the other one has native resolution of 1680x1050 I tested your workaround for fullscreen on 1680x1050 machine and it almost worked. I can select closest mode of 1600x900 and panels work OK. But when I set resolution to native 1680x1050 they (panels) are no longer accessible. I tried to change resolution in GUI and via xrandr -- result is the same. I noticed one fact that list of modes in Fedora (hosting machine where X2Go client is running), as reported by xrandr is different from the list of modes reported on the remote host, but both show 1680x1050 as an option. The only difference would be that in Fedora it comes with 59.95*+ rate but in the remote host it comes with 60.00 Could this be a reason for native resolution not to work in fullscreen mode as expected (with accessible panels)?
If I configure the session to use entire display, in my case Display 1 (the only available option), I can use Ctrl+Alt+<left or right> to switch workspaces on the remote host but not switch between applications.

Thank you.

Simon

On Thu, Nov 12, 2015 at 12:38 PM, Robert Dinse <nanook@eskimo.com> wrote:

You've probably got the display on the remote machine desktop set larger
than the resolution of your local screen. I see this for example if I use an
old 3x4 monitor with 1600x1200 and connect to a machine that I previously had
set to 1680x1050 for a wide screen. The solution in this case is just to go
into System->Preferences->Hardware-Displays and change the resolution to that
of your local monitor.

With respect to Fedora intercepting keys, change to Display 1 instead of
Full Screen and then the control-alt-arrows to switch desktops will be
intercepted locally instead of passed to the remote machine.

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On Thu, 12 Nov 2015, Simon Baev wrote:

Date: Thu, 12 Nov 2015 11:52:25 -0500
From: Simon Baev <simonbaev@gmail.com>
To: x2go-user <x2go-user@lists.x2go.org>
Subject: [X2Go-User] MATE desktop (Ubuntu Mate 15.10) cannot access in
fullscreen mode

Hi All,

I am running X2Go server 64-bit on Ubuntu Mate 15.10 from PPA repository:

x2goserver: 4.0.1.19
x2goserver-extensions: 4.0.1.19
x2goserver-xsession: 4.0.1.19

This Ubuntu host is virtualized in ESXi 6.0 environment with open-vm-tools.

I am using X2Goclient (X2Go Client v. 4.0.5.0 (Qt - 4.8.7) 64 bit) on
Fedora 23 with Gnome 3 desktop.

Here is the *problem*:

- When I connect to X2Go server in fullscreen mode, both top and bottom
panels are not accessible. The rest is OK.
- When I connect in Window mode (various resolutions) I can access both
panels but unfortunately cannot use Alt+Tab to switch programs inside the
Ubuntu (it is getting intercepted by Fedora).

Any help is appreciated. Thank you.

--
Simon

Simon