@Chase:

Quite a few people are having problems with tuning of Peak 221544 / Kworld 
PC160 dual tuner cards with af9015 firmware - long thread with people reporting 
issues - http://ubuntuforums.org/showthread.php?t=1458234 .
After messing around with Mythbubtu 9.10 and the firmware up to 4.95, I wiped 
and installed 10.4 Mythbuntu and found I got 'No channels found', so then tried 
reverting to early firmware incrremently - here's a relevant section from my 
last post on that thread :
---------------------
Between each firmware change, deleting of channels and cards, then cold reboot. 
Long channel scan timeouts.

4.65 firmware - 13 channels found, very little usable, no main stream but did 
get price drop tv - 4.65 has a sense of humour; does anyone who takes the 
effort to build a myth box actually enable that type of channel except for 
laughs?...
4.71 firmware - it too has a sense of humour, 13 channels and it thinks I 
should be bidding for an over priced exercise bike.
4.73 firmware - 52 channels but crazy numbering - starting from 4168 and only 
getting partial lock when trying to view a channel, so can't bid on that 
medalian on a chain that looked so tasteful...
4.95 firmware - just for consistency reverted - 23 channels found, little main 
stream (Again no BBC etc.) - crazy numbering - started from 8384.

Now from https://bugs.launchpad.net/ubuntu/+s...44/comments/19 did :

$ sudo add-apt-repository ppa:chasedouglas/linux-firmware-nonfree
$ sudo apt-get update
$ sudo apt-get install linux-firmware-nonfree

Appeared I had the latest non free firmware anyway, cold reboot.

For the hell of it upped the card channel scan timeouts (Signal,
channel) from 6000 ms, 12000 ms to 12000 ms, 18000 ms and now gone full
circle and back to "No Channels Found".

--------------------------------------
I can see Mythbuntu 10.4 ilooks good and is more responsive than 9.10 so would 
really like to get the firmware working with card on 10.4, so if you can tackle 
it and want any log messages or try out other firmware - I quite glady use the 
box to test.

-- 
dvb-usb-af9015 should be updated to the latest version to resolve some issues
https://bugs.launchpad.net/bugs/458444
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