[linux-dvb] FusionHDTV DVB-T Dual Digital2

Michael Krufky mkrufky at linuxtv.org
Tue Oct 3 17:45:40 CEST 2006

Mark McKenzie wrote:
> I've tried a few things over the last few days:
> - I grabbed a channels.conf from one of my collegues who lives quite close to 
> where I do, and configured mplayer to use it. No dice.
> - Borrowed a similar tuner (DViCO FusionHDTV DVB-T USB usbid 0fe9:db11) and 
> got that working no problems. Generated a conf from it, watched a couple of 
> channels, etc so its definatly not a signal issue.
> - Put the Dual Digital 2 back in and tried it with the newly generated conf; 
> the card locked up again.
> I'm starting to think it might be something to do with when its locking onto a 
> signal. I'm probably going to put some kprobes into the kernel and see whats 
> going on right before the lockup.
> If you think it would be of some benefit, I can come onto IRC sometime and we 
> can try and work out whats going on. What timezone are you in?


I know what the problem is...  It has everything to do with the tuning
code in that Dnos104z NIM (incorrectly labeled, 'dee1601' in the kernel

Chris Pascoe has found a way to fix this, but the fix has not yet been
merged into the master branch.

See here:


If you want to find me on irc, I am there right now.  I am in New York,
-0500 ...  #linuxtv on irc.freenode.net

Here is a quick way to get things working for your device... Please
follow these instructions verbatim:

1) hg clone http://linuxtv.org/hg/~mkrufky/cxusb

2) cd cxusb

3) hg export 56cb67d6c632 > FusionHDTVdual2.patch

4) cd ..

5) hg clone http://linuxtv.org/hg/~pascoe/v4l-dvb-rounding

6) cd v4l-dvb-rounding

7) hg import ../cxusb/FusionHDTVdual2.patch

8) make

9) sudo make install

That should do it!

Please reply-to-all after you've tested this... Chris is looking for
feedback on the changes in his tree, and your testing will be helpful in
evaluating whether or not this fixes your problem.


Michael Krufky

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