I've installed kubuntu 20.04 (Ubuntu with the KDE window manager) on both my CF-31 Mk4 and my CF-30 and am very happy. The CF-30 GOBI 2000 WWAN is supported under Linux (you need to put the windows drivers in the correct place) and works a treat. In my CF-310 I have the following card: Sierra Wireless MC7355 LTE/EVDO PCIe 4G Module. The WWAN works out of the box, which is fantastic. However, I've not been able to connect either gpsd or use gpscat to discover the GPS serial stream. I have a /dev/ttyS0, ttyS1 and ttyS4 showing, but if I connect to them at 9600 baud I don't get a stream of GPS data. I suspect the serial port on the card needs some sort of configuration or driver for Ubuntu. I was wondering if anyone had any knowledge of whether I can get this working? Thanks for the help, regards Mark. p.s. I do amateur radio and took my CF-30 up on a fell recently, if you are interested in that kind of thing there is a report with some photos here: https://reflector.sota.org.uk/t/loughrigg-fell-g-ld-047/23027 Regards, Mark.