david.henningsson at canonical.com
Wed Sep 29 02:19:54 PDT 2010
for some reason your test of alsamixertest didn't reach me the normal
path, so I'm pasting it in from the archives:
> Cool. Packaged up for Mandriva too now.
> What license do you use.
> Couldn't seem to find any reference to it...
It should be GPLv3, thanks for noticing.
> Ultimately the results seem to indicate that "Master" is OK,
> but out by a bit,
Yeah, I have seen that on one of my test machines here as well, and I
don't know if one should mark that as error, I probably shouldn't. I
don't even know if that's a volume control or an ADC problem in that case.
> but PCM is all kinds of broken.
PCM is indeed very broken. I've traced it down to alsactl as well, and
if the decision was mine, I would remove it right away, but upstream
wasn't convinced. :-( See the long thread starting at
> FWIW, the testing for -18.0, expected -21.04 measure -20.03dB is all a
> little confusing. When testing for -18.0, why is 021.04 expected?
> Perhaps some more explanation would be nice as to why the expected
> values differ from the test value.
So when it did the initial testing signal, it set everything to 0 dB and
the input signal received was -3.04 dB. So when setting Master to -18
dB, it expects the input signal to be -18-3.04 = -21.04 dB.
David Henningsson, Canonical Ltd.
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