[mythtv-users] Question about Wiki
Kevin Kuphal
kuphal at dls.net
Thu Feb 23 17:59:48 UTC 2006
Tom Lichti wrote:
> Kevin Kuphal wrote:
>
>> Tom Lichti wrote:
>>
>>
>>> I have a few things I'd like to add to the Wiki, but I'm not sure on the
>>> etiquette/guidelines. I see the style guide, but it doesn't really cover
>>> my concerns. The two things I want to add are:
>>>
>>> 1) In the hardware section, there is an entry for the Avermedia M179
>>> cards. I have 2, as well as 2 PVR 250's, and I can definitely say that
>>> the direct comparison of the quality is no contest, the 250 is much
>>> nicer. Plus, the cards were found and configured in KnoppMyth without
>>> any issues, I'd like to add something about that as well.
>>>
>>> 2) I just spent an hour trying to debug a problem with alsa, and
>>> realized the fix was a 2 second thing that I should have twigged to.
>>> Should it go in the knowledge base section ,or the sound cards section
>>> in Hardware?
>>>
>>>
>>>
>>>
>> It's hard to say exactly where little tidbits should go. Certainly a
>> little note on the M179 page about quality compared to the PVR-250 would
>> be appropriate as well as perhaps a similar statement on the PVR-250
>> page about it's difference over an M179. There is also a general
>> purpose Video Capture Cards page where this comment could also go.
>>
>>
> Perhaps a section on both pages called 'User observations' or something
> like that? That way we'd know it was more subjective than objective.
>
>> As for the alsa problem, it depends on many factors. Was it specific to
>> a particular audio card? A particular version of alsa? With so many
>> variables, a single page of alsa information is hard to put together.
>>
>>
> Well, what specifically happened is that on my frontend, which was
> originally KnoppMyth but has been updated to current SVN, I upgraded to
> the latest alsa version, and it caused stuttering during playback, so I
> went back to the version I had before. I never rebooted during this
> process, so that may have been a factor. Anyway, during either the
> upgrade or downgrade, my mythtv user was removed from the 'audio' group,
> which meant the user had no permission to access the audio device. I
> didn't notice this because I never logged the user out during all of
> that, so it still had permission to access the device. Once I rebooted,
> I found out I had no sound in mythtv. I could run alsamixer as root, but
> not mythtv, but it didn't twig that it was a permissions problem until
> an hour later (after I had re-run alsa config numerous times, upgraded
> alsa, etc, etc) when I added the mythtv user back to the audio group,
> and everything was working again.
>
> I found lots of people who had a similar problem, but none that
> mentioned permissions, so it seems like something that may be useful for
> the wiki. It's really more of a troubleshooting thing, but there isn't a
> 'Troubleshooting' category. Perhaps it could be added? Also, I'm not
> sure if it was a KnoppMyth/debian specific problem, but it could be
>
Just make sure it isn't KnoppMyth/debian specific as if it is, it
belongs with their documentation, not Myth in general. I believe there
is already a debian page on the wiki and KnoppMyth of course has it's
own site.
Kevin
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