However, it is extremely unintuitive. Both the Gnome sound control panel and alsamixer command-line tool do not help with this problem -- you can set it to 100% in alsamixer and over-amplify in Gnome sound control panel, which does affect the volume, but it is still deathly quiet. I would not mark this bug as Invalid, as there is a user interface issue here if nothing else.
I have this same issue with the same device. Jono (reporter) posted a workaround on his blog here: www.jonobacon. org/2008/ 06/17/polycom- communicator- low-mic- volume/
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I can confirm that this fix works.
However, it is extremely unintuitive. Both the Gnome sound control panel and alsamixer command-line tool do not help with this problem -- you can set it to 100% in alsamixer and over-amplify in Gnome sound control panel, which does affect the volume, but it is still deathly quiet. I would not mark this bug as Invalid, as there is a user interface issue here if nothing else.