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[Paul Everill <paul@xxxxxxxxxxxxxxxx>]

@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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Status in “linux-firmware-nonfree” package in Ubuntu: Fix Released

Bug description:
Binary package hint: linux-firmware-nonfree

The firmware that comes for af9015 is not the latest version and it has an issue that blasts dmesg with this two error messages:
af9015: command failed:255
dvb-usb: error while querying for an remote control event.

The latest firmware version 0.95 solves this issue:
http://www.otit.fi/~crope/v4l-dvb/af9015/af9015_firmware_cutter/firmware_files/4.95.0/