From CAD to CAE...

My work desktop is Windows Server 2008 R2. My home desktop is Ubuntu Linux 10.04. When I connect via Openconnect and remote desktop to work, the frequent keys that I needed to use nowadays is CTRL+ALT+ENTER. This keystroke is a signal to Ubuntu Remote Desktop Viewer to toggle full screen options.

A variant of the third key (DELETE) is an indicative to Windows to signal the SAM Security Manager to attract its attention. By default, the RDP viewer does not have a maximize restore option to full screen in Ubuntu. You ought to use the CAE option to avail the same.