On 15/01/14 12:12 PM, Bill Unruh wrote: > On Wed, 15 Jan 2014, David Vincent-Jones wrote: > >> >> Takashi Iwai <tiwai <at> suse.de> writes: >> >>>> David Vincent-Jones wrote: >>>>> Reference: >>>>> http://www.alsa-project.org/db/?f=b5c0d636c3870da14ab5f4e4c6f5f64d7c906507 >>>>> >> >>> If this still doesn't work, it can be rather the way of testing. >>> This digital mic might be a PDM unit with the inverted signal in one >>> channel. Try to record a stereo stream, e.g. >>> >>> arecord -Dhw -fdat -vv foo.wav >>> >>> Or, try to pass model=inv-dmic. If this works, we can cook up a >>> correct patch. >>> >>> Takashi >>> >>> >> The arecord produced only 'white-noise' but no microphone input >> whatsoever. > Still no further ahead in solving this situation! I am comparing values and entries in my W530 'asound.state' with those in a similar 520 and see substantial differences and omissions: I have no "mic capture volume" or "internal mic capture volume" The values in my "mic boost volume" are very different I have no "Internal mic capture switch" Could this indicate a source of my problem? David ------------------------------------------------------------------------------ CenturyLink Cloud: The Leader in Enterprise Cloud Services. Learn Why More Businesses Are Choosing CenturyLink Cloud For Critical Workloads, Development Environments & Everything In Between. Get a Quote or Start a Free Trial Today. http://pubads.g.doubleclick.net/gampad/clk?id=119420431&iu=/4140/ostg.clktrk _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
