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<div class="moz-cite-prefix">On 3/26/2014 5:32 PM, Mark Perkins
wrote:<br>
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On 27 Mar 2014, at 10:30 am, "Mike Carron" <<a
moz-do-not-send="true" href="mailto:jmcarron@starstream.net">jmcarron@starstream.net</a>>
wrote:<br>
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<font size="+1"><font face="Times New Roman">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:<br>
<br>
ALSA: setting hardware buffer size to 128<br>
ALSA: Error opening
/proc/asound/card0/pcm3p/sub0/prealloc: Permission denied<br>
ALSA: Tryto manually increase audio buffer size...<br>
ALSA: Unable to sufficiently increase ALSA hardware
buffer size - underruns are likely<br>
<br>
Those four error messages repeat regularly as long as I'm
trying to play something. I've searched various threads
dealing with ALSA, buffer size and related issues and have
not found anything that resembles my situation.<br>
<br>
Any thoughts on where I might look?<br>
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<div class="moz-signature">-- <br>
mike </div>
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<div>Maybe just a random hiccup? Try a reboot and see if / when it
reoccurs? Given that your machine is normally reliable and
stable. In particular see if the sound returns on reboot then
disappears again after a period of time.</div>
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<div>I will probably get shot down for suggesting a reboot but I
get some random problem about once a month that resolves with a
reboot and doesn't return....</div>
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<div>Maybe it just means I'm too lazy / time poor / ignorant too
chase down the problem, but in my defense it's hard to find
problems that only occur once then go away.</div>
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***<br>
I tried a reboot and that didn't work. I have it shut down for now
while I actually do the 0.25 to 0.27 upgrade on the test BE and
another FE. If it is still without sound next time I power it up,
I'll upgrade it and try to connect to the test BE. I guess if all
else fails I can always grab the USB stick with Mythbuntu 12.04 on
it...<br>
<br>
mike<br>
<br>
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