Quartus 21.1 - JTAG communication on Ubuntu 20.04

I have much the same question.

I tried to outline my own workaround here - https://community.intel.com/t5/Intel-Quartus-Prime-Software/JTAG-error-Unexpected-error-in-JTAG-server-error-code-35-and-Can/m-p/1390610#M74039

However, it is far from ideal as I keep having to disconnect and reconnect my DE0-Nano board. I am also mystified why it is needed.

I would really like to see a proper solution.