[mythtv-users] FE sound stopped working - Update 2
jmcarron at starstream.net
Thu Mar 27 04:24:28 UTC 2014
On 3/26/2014 8:54 PM, Mike Carron wrote:
> On 3/26/2014 8:42 PM, Mike Carron wrote:
>> On 3/26/2014 7:21 PM, Jean-Yves Avenard wrote:
>>> On 27 March 2014 11:00, Mike Carron <jmcarron at starstream.net> wrote:
>>>> I temporarily switched one FE from my production MBE to a test
>>>> setup where
>>>> I'm going to attempt to upgrade from 0.25 to 0.27 in the next day
>>>> or so.
>>>> After I switched it back to the production MBE all was fine for
>>>> about 15
>>>> minutes and then sound output ceased. The first thing I did was go
>>>> to Setup,
>>>> verified that nothing had changed and ran the speaker test which
>>>> was good.
>>>> I'm writing this from a Windows machine where I can't conveniently
>>>> grab the
>>>> frontend log but at the same time as the sound disappeared a set of
>>>> 4 error
>>>> messages started appearing in the log:
>>>> ALSA: setting hardware buffer size to 128
>>>> ALSA: Error opening /proc/asound/card0/pcm3p/sub0/prealloc:
>>>> ALSA: Tryto manually increase audio buffer size...
>>>> ALSA: Unable to sufficiently increase ALSA hardware buffer size -
>>>> underruns are likely
>>>> Those four error messages repeat regularly as long as I'm trying to
>>>> something. I've searched various threads dealing with ALSA, buffer
>>>> size and
>>>> related issues and have not found anything that resembles my
>>>> Any thoughts on where I might look?
>>> You can ignore those.
>>> They aren't error as such, just a hint that you may have buffer
>>> You haven't reported the problems you are having.
>>> What exactly is happening?
>>> you have no audio, no video what?
>> Sorry, my description was a bit hidden.
>> About 15 minutes into watching a live program the sound suddenly
>> ceased. I went from completely normal sound to no sound at all. I
>> changed channels and also tried playing a recording - all silent.
>> I mentioned switching between backends just in case that activity
>> could have unforeseen side effects.
> Disregard my previous. After an earlier reboot had failed to fix the
> problem I shut that unit down for several hours. I just now restarted
> it and MAGIC!, the sound is once again normal. It will be on for the
> rest of the evening and I'll see if/when it goes silent again.
> For what it's worth, the unit in question is a Zotac ZBOX AD03. I had
> already purchased two of them before I heard of Mythtv and had no idea
> the wonderful problems ahead of me with ATI drivers.
15 minutes into watching and the unit went silent again. At this point
I'm about convinced that it is a hardware issue. I'll likely give it one
more chance tomorrow morning and then it will be hardware replacement time.
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