Hi Roger. On another thread I posted about this as it seemed it was a WLAN wireless issue with Trisquel OS rather than ubuntu linux in general. The guy over at DistroWatch was reviewing this OS and noted this incompatibility. He was testing with HP fitted with Ralink RT5390R PCIe Wireless card which I looked up for compatibility issues here…
… and even dropped the search to just Ralink …. no results at all…!
Would you consider another alternative workaround – a USB Wireless adapter such as…
https://www.addictivetips.com/ubuntu-linux-tips/usb-wifi-adapter-linux/
Good Luck.
Edit:- Sorry - you should know as you posted here recently… which is solved.