kelman via Whonix Forum:
I am not trying to hide the use of Tor, but only the use of Qubes.
Good luck. I guess unless you don’t contribute to Qubes towards that
goal, it won’t e happening. While my above reference isn’t on topic
indeed it shows how difficult similar endeavors are.
Other issues for hiding Qubes from the top of my head:
- Fedora phone home issue already mentioned
- Qubes time sync (which likely differs from NTP on plain (non-Qubes)
Debian host operating systems perhaps at least wrt when how/often it is
being run) - Qubes update check as you already mentioned - even if torified, the
timing mint hint at Qubes. - Not sure what else. Best to ask on Qubes mailing list and/or traffic
analysis.