Wouldn't it be an idea to have a community maintained page of working / partly working / non working hardware for Tvheadend ? Showing Brand, type, and status (green, orange, red)
After fiddling for hours with a Technotrend S3200 CI, which works fine in Kaffeine, I found out it will not work with TVheadend.
It gets 'no signal' on all transponders.