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: http://www.alsa-project.org/db/?f=ecd6ea8c7a37c7aa036c88026885f324ef2ab067
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.
Regards, Alexey