hvr1300 DVB regression

hvr1300 DVB regression

[Raffaele BELARDI]

I'm no longer able with recent kernels to tune DVB channels with my
HVR1300. This is a mythtv box but I replicated the problem using
www.linuxtv.org utilities to exclude mythtv issues.

Using kernel 2.6.26-r4 and 2.6.27-r8 I am able to tune both analog and
DVB channels.
Using kernel 2.6.30-r6 I can only tune to analog channels. 'dvbscan'
returns no channel info.

I suspect a tuner problem.

With 2.6.27 'grep tuner syslog' reports:

cx88[0]: TV tuner type 63, Radio tuner type -1
tuner' 2-0061: chip found @ 0xc2 (cx88[0])
tuner' 2-0063: chip found @ 0xc6 (cx88[0])
tveeprom 2-0050: tuner model is Philips FMD1216MEX (idx 133, type 63)
tuner-simple 2-0061: creating new instance
tuner-simple 2-0061: type set to 63 (Philips FMD1216ME MK3 Hybrid Tuner)
tuner-simple 2-0061: attaching existing instance
tuner-simple 2-0061: type set to 63 (Philips FMD1216ME MK3 Hybrid Tuner)

With kernel 2.6.30:

cx88[0]: TV tuner type 63, Radio tuner type -1
cx88[0]: i2c init: enabling analog demod on HVR1300/3000/4000 tuner
tuner 2-0043: chip found @ 0x86 (cx88[0])
tuner 2-0061: chip found @ 0xc2 (cx88[0])
tveeprom 2-0050: tuner model is Philips FMD1216MEX (idx 133, type 78)
tuner-simple 2-0061: creating new instance
tuner-simple 2-0061: type set to 78 (Philips FMD1216MEX MK3 Hybrid Tuner)
tuner-simple 2-0061: attaching existing instance
tuner-simple 2-0061: couldn't set type to 63. Using 78 (Philips
FMD1216MEX MK3 Hybrid Tuner) instead

Same kernel, another boot:
tveeprom 2-0050: Encountered bad packet header [07]. Corrupt or not a
Hauppauge eeprom.
cx88[0]: TV tuner type 63, Radio tuner type -1
cx88[0]: i2c init: enabling analog demod on HVR1300/3000/4000 tuner
tuner 2-0043: chip found @ 0x86 (cx88[0])
tuner 2-0061: chip found @ 0xc2 (cx88[0])
tuner 2-0061: tuner type not set
tuner-simple 2-0061: creating new instance
tuner-simple 2-0061: type set to 63 (Philips FMD1216ME MK3 Hybrid Tuner)
tuner 2-0061: tuner type not set
tuner 2-0061: tuner type not set

Once the FMD1216ME tuner is detected as 63, the other as 78.

I can test other kernels between .27 and .30 to restrict the problem
area if necessary.

Any other suggestion?

thanks,

raffaele

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Re: hvr1300 DVB regression

[Nick Morrott]

2009/11/2 Raffaele BELARDI <raffaele.belardi@st.com>:
> I'm no longer able with recent kernels to tune DVB channels with my
> HVR1300. This is a mythtv box but I replicated the problem using
> www.linuxtv.org utilities to exclude mythtv issues.
>
> Using kernel 2.6.26-r4 and 2.6.27-r8 I am able to tune both analog and
> DVB channels.
> Using kernel 2.6.30-r6 I can only tune to analog channels. 'dvbscan'
> returns no channel info.
>
> I suspect a tuner problem.

Have you read https://bugs.launchpad.net/mythtv/+bug/439163 and
comments (esp. https://bugs.launchpad.net/mythtv/+bug/439163/comments/50)?

Cheers,
Nick

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Re: hvr1300 DVB regression

[Raffaele BELARDI]

Nick Morrott wrote:
> 2009/11/2 Raffaele BELARDI <raffaele.belardi@st.com>:
>> I'm no longer able with recent kernels to tune DVB channels with my
>> HVR1300. This is a mythtv box but I replicated the problem using
>> www.linuxtv.org utilities to exclude mythtv issues.
>>
>> Using kernel 2.6.26-r4 and 2.6.27-r8 I am able to tune both analog and
>> DVB channels.
>> Using kernel 2.6.30-r6 I can only tune to analog channels. 'dvbscan'
>> returns no channel info.
>>
>> I suspect a tuner problem.
> 
> Have you read https://bugs.launchpad.net/mythtv/+bug/439163 and
> comments (esp. https://bugs.launchpad.net/mythtv/+bug/439163/comments/50)?
> 

No, I had not seen those. Looks like a bad patch
(https://bugs.launchpad.net/mythtv/+bug/439163/comments/36). I'll give
it a try.

thanks,

raffaele

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Re: hvr1300 DVB regression

[Raffaele BELARDI]

Raffaele Belardi wrote:
> Nick Morrott wrote:
>> 2009/11/2 Raffaele BELARDI <raffaele.belardi@st.com>:
>>> I'm no longer able with recent kernels to tune DVB channels with my
>>> HVR1300. This is a mythtv box but I replicated the problem using
>>> www.linuxtv.org utilities to exclude mythtv issues.
>>>
>>> Using kernel 2.6.26-r4 and 2.6.27-r8 I am able to tune both analog and
>>> DVB channels.
>>> Using kernel 2.6.30-r6 I can only tune to analog channels. 'dvbscan'
>>> returns no channel info.
>>>
>>> I suspect a tuner problem.
>> Have you read https://bugs.launchpad.net/mythtv/+bug/439163 and
>> comments (esp. https://bugs.launchpad.net/mythtv/+bug/439163/comments/50)?
>>
> 
> No, I had not seen those. Looks like a bad patch
> (https://bugs.launchpad.net/mythtv/+bug/439163/comments/36). I'll give
> it a try.

I confirm the above patch is the cause of the regression, going back to
the original code I am able to tune again DVB channels.

thanks,

raf

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