[alsa-devel] Possible regression on Sigmatel 9205

Manuel Naranjo manuel at aircable.net
Wed Oct 15 15:36:45 CEST 2008

>> Hello everyone,
>> Sorry to interrupt you all, but I had been trying to get the digital mic
>> of my Dell Inspiron 1521 for the last 5 days without any sucess.
>> I'm running kernel 2.6.27 with included ALSA, I also tried GIT alsa, and
>> the result is the same, the mic works, but the volume is so damn low
>> that there's no way to hear it.
>> I checked dell's windows drivers and my board belongs to the M4_8 line
>> and not to the M4_2 as suggested in alsa source. I also did a diff
>> between M4_2 and M4_8 and there are some differences, specially in GPIO.
>> I don't know what else to do now, I had tried everything. Last working
>> alsa was 1.15 if I'm not wrong, but I'm not able to backport 1.15 to the
>> new kernel, for some reason it fails to compile.
> Do you have "Digital" volume adjusted properly (in the control name
> "Digital Capture Volume")?
> Usually this should be in exactly middle, which corresponds to 0dB.

Yep I did. I guess you're tired of stupid support requests. Don't
worry I think I know what I'm doing very well. Tried with lots of
different model options for the module too, none worked.

> Anyway, please show the alsa-info.sh output with --no-upload option.
> This will tell us more detailed information.
Sure, I'm attaching 2 version. One is by not passing any argument to
the module after a fresh boot, the other one is by using
model=dell-m42 which should be mine according to my PID. BTW there are
lots of bug tickets opened for this card over the net, most related to
Ubuntu and kernel > 2.6.24

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