Early this month I determined the desktop would work again by adding the kernal parameter nouveau.noaccel=1. The desktop is not as snappy, but no other strangeness is noted. For my hardware, the Linux desktop is surely not as viable as my Windows desktop.
Other recent things I’ve done:
Added Nagios Roundcube Webmail check.
Removed the ProFTP ftp server.
Disabled Internet access to telnet server.