Re: cx5000 default auto sleep mode

["Timothy D. Lenz" <tlenz@vorgon.com>]

On 4/14/2010 8:44 PM, Andy Walls wrote:
> On Wed, 2010-04-14 at 13:40 -0400, Devin Heitmueller wrote:
>> On Wed, Apr 14, 2010 at 1:29 PM, Timothy D. Lenz<tlenz@vorgon.com>  wrote:
>>> Thanks to Andy Walls, found out why I kept loosing 1 tuner on a FusionHD7
>>> Dual express. Didn't know linux supported an auto sleep mode on the tuner
>>> chips and that it defaulted to on. Seems like it would be better to default
>>> to off.
>>
>> Regarding the general assertion that the power management should be
>> disabled by default, I disagree.  The power savings is considerable,
>> the time to bring the tuner out of sleep is negligible, and it's
>> generally good policy.
>>
>> Andy, do you have any actual details regarding the nature of the problem?
>
> Not really.  DViCo Fusion dual digital tv card.  One side of the card
> would yield "black video screen" when starting a digital capture
> sometime after (?) the VDR ATSC EPG plugin tried to suck off data.  I'm
> not sure there was a causal relationship.
>
> I hypothesized that one side of the dual-tuner was going stupid or one
> of the two channels used in the cx23885 was getting confused.  I was
> looking at how to narrow the problem down to cx23885 chip or xc5000
> tuner, or s5h14xx demod when I noted the power managment module option
> for the xc5000.  I suggested Tim try it.
>
> It was dumb luck that my guess actually made his symptoms go away.
>
> That's all I know.
>
> Regards,
> Andy
>
>
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Guess it only reduced the problem. Today I looked at the guide and abc 
had no data. Checked with femon and the second tuner on the dual would 
not tune.