Re: Freecom usb dvb-t hang usb id 14aa:0221 -Solved

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Mike Choy wrote:
> Mark Howells wrote:
>   
>>> -----Original Message-----
>>> From: linux-dvb-bounces@xxxxxxxxxxx 
>>> [mailto:linux-dvb-bounces@xxxxxxxxxxx] On Behalf Of Mike Choy
>>> Sent: 27 September 2006 22:02
>>> To: linux-dvb@xxxxxxxxxxx
>>> Subject:  Freecom usb dvb-t hang usb id 14aa:0221
>>>
>>> Hi Team
>>>
>>> My Freecom usb dvb-t stick seems to hang the system after 
>>> upgrade from suse 10.0 to 10.1 on my main mythtv server on 
>>> insertion of the stick. 
>>>     
>>>       
>> Mike,
>>
>> If you scan back though the archives, you'll see that several of us have had
>> problems recently with variations of Freecom sticks. I have recently
>> upgraded to GCC 4.1 and taken the latest mercurial sources and that seems to
>> have stabilised it. My OS is somewhat in pieces at the moment but I can at
>> least tune it repeatedly and I don't get error messages like before. I
>> wouldn't mind betting that the output of dmesg from your system show lots of
>> 'recv bulk' errors... I have added extra debugging to dvb-usb-urb.c expand
>> error codes, which you can try if you are getting these 'recv bulk' errors
>>
>> Unfortunately I haven't really isolated what affected my system but the next
>> step is to try and run it (again) on my NSLU2. 
>>
>> Cheers
>>
>> Mark
>>
>>   
>>     
> Mark
> Cheers, cant figure out why my laptop is working and mythserver not, I
> have just got another usb tv card from kworld which uses
> a different chipset altogether, and guess what, it hangs my server but
> not my laptop. Probably something basic with patches to the base os on
> the usb side of things....
>
> will do some more comparisons with laptop vs server to try and troubleshoot.
>
> Mike C
>
>
>
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>
>   
OK Replying my own question, it looks like the problem with my server is
down to usb power draw. by plugging the freecom stick into a powered
hub, all seems to be working. Not ideal, but it seems that there were
major changes with 2.6.16 kernel and USB power configuration. Article here.

http://lwn.net/Articles/186331/

Mike C


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