I noticed this issue with my USB wifi on both my laptop and desktop. The
laptop uses trisquel 8 and kernel 4.4.0-186-generic while the desktop uses
Trisquel 9.0 and kernel Kernel 4.15.0-112-generic. I wonder if this has
anything to do with this bug:
https://www.parabola.nu/news/ath9k-wifi-devices-may-not-work-with-linux-libre-576/
https://labs.parabola.nu/issues/2824
"if you have a USB wifi device which uses the ath9k or ath9k_htc kernel
module, you should postpone upgrading to any of the 5.7.6 kernels; or the
device may not work when you next reboot - PCI devices do not seem to be
affected by this bug"
My PCI wifi works and my Manjaro desktop also doesn't work with a different
USB wifi since upgrading to the kernel 5.7.9-1-MANJARO so it seems similar.
My USB wifi does work with kernel 4.4.0-119-generic. I have just created an
issue for this but wanted to share my findings here as well.
