[alsa-devel] how to quirk max capture level?

Alexey Fisher bug-track at fisher-privat.net
Tue Jul 21 11:51:52 CEST 2009

hallo all,
i have Logitech QuickCam E3500 ... with little issue.
Setting capture volume to more then 94% will mute this device... no 
capture will be possible. This device has same issue with windows vista. 
So best way to handle it, is usbquirks.h , but i do not know any way to 
set max level.

amixer report this device like:
Simple mixer control 'Mic',0
   Capabilities: cvolume cvolume-joined cswitch cswitch-joined
   Capture channels: Mono
   Limits: Capture 0 - 3072
   Mono: Capture 2950 [96%] [23.00dB] [on]

here is alsa-info.sh output:

As you can see it report it's limits 0-3072 .. but real limit is 0-2943.

Please if any one has some idea, meail me.


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