Florian Kulzer wrote:
On Sun, Oct 07, 2007 at 18:08:10 +0100, andy wrote:
Florian Kulzer wrote:
On Sun, Oct 07, 2007 at 15:21:50 +0100, andy wrote:
[ snip: problems with stereo playback of mp3 files ]
The fact that direct CD playback is in stereo does not necessarily mean
that ALSA is correctly configured for stereo playback of sound files.
A better test is:
speaker-test -t sine -c2
This command should produce a (rather boring) sine wave output which
switches between left and right channel every few seconds. Does that
work?
Thanks for the idea. Left front does not work - which is the speaker that
is non-responsive when playing mp3s. I wonder if this is due to the new
kernel upgrade recently: 2.6.22-2-686
It is possible that a module upgrade introduced a regression. Did the
stereo playback of mp3 files work before, or did you only listen to CD
playback up to now?
In any case, I think you should first check the alsa mixer settings.
Post the output of:
amixer | egrep '^( .*Left|[^ ])'
Hi
Yes, the mp3s did play in stereo before. In any event, I rebooted and
while the machine was shutting down, I heard a "pop" sound from the left
speaker and upon reboot all is well.
I don't know what happened, but suspect that it was perhaps a module not
loading properly in the kernel.
I appreciate that rebooting is not the most elegant solution, nor even
the most practical, so this thread will be useful to keep just in case.
What would I be looking for in the output of
amixer | egrep '^( .*Left|[^ ])'
just so that I can keep this in mind for future reference if there is a
recurrence?
Thanks Florian.
Andy
--
"If they can get you asking the wrong questions, they don't have to worry about the
answers." - Thomas Pynchon, "Gravity's Rainbow"
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