"I do not know how I am going to make a proof of no-damage return"
- through the fact that someone else (friends) is able to witness that your device was running under windows
- through photo's and
- through a signed pack list and *before* you pack it and send it back.
Circumvent that the seller can say: it is not complete, it is damages, etc ...
Driver problem:
as @mglae noticed: it seems that the device was internally and undocumented changed.
this means to me there is no driver for linux (yet and maybe for a long time, if ever).
even nobody knows what the right fixes are => different devices with same ID's makes that searches somewhat difficult
Maybe one here can tell you more. I'm not a developer.
I for me only read about nearly 2 years old and open bug reports saying "unable to handle kernel NULL pointer dereference" which is - IIRC- a heavy bug.
I tried to bring this bug to the attention on linux media-list without success.
I tried a technotrend and a terratec, both with the ID's mentioned in dvb wiki and no.
what's left ?
photos, witness, pack list (for that *special* shop) stamp and bye bye grap !