Tuning problem during scan with Pinnacle Hybrid Stick 320E (em28xx)

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Hi,
I've identified a problem, but after an IRC session (http://linuxtv.org/irc/v4l/index.php?date=2009-09-16) with Devin Heitmueller, he he did not understand what happens to my adapter, and no others seems to have reported this problem.

My configuration is Fedora 11 with kernel 2.6.30.5-43.fc11.i686.PAE and latest v4l-dvb tree; the adapter is a Pinnacle Dazzle Hybrid Stick 320E (EEPROM-ID=0x9567eb1a, EEPROM-hash=0xb8846b20).

The problem is that the adapter isn't able to performe a full scan searching for all channel, but it's able to tune (if trasmission are present) and scan only the first MUX, all MUX that follow this are not tunable. It is like the adapter, after first tuning attemp, remain locked and can't tune to other frequency or receive anymore data from aerial signal.

At http://pastebin.com/f75008ea6 is possible to see dmesg during various operation with tuner_xc2028 debug enabled:
* 1-178 - insert of device;
* 180-514 - first tuning section (only first MUX, at 474MHz, was tuned, nothing for 482 or 514MHz); * 516-803 - second tuning section (only first MUX, at 514MHz, was tuned, nothing for 482 or 474MHz).

With the support of Devin Heitmueller, I've tried to enable debug of zl10353 too, but he has not seen anything useful to solve the problem and he has told to me that is necessary to found someone to add a bunch of printk() statements, and try to figure out what is going on.

Now I need to know if there are other people who have the same problem or if there is someone who can provide support to better identify the problem and correct it. Logically I'll do all test required and necessary to solve this.

Thanks to all for attention,
Sebastian
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