I have also experienced this bug. I could see all the ¨cannot set freq 16000 to ep 0x86" when I do a dmesg in the terminal. Also my sound indicator was muted and I could not adjust the sound. I also have a Logitech webcam (not sure what model) and I am running a new install of 11.10 64-bit.
After I unplugged my webcam I could again adjust my sound and the system was back to normal.
I have also experienced this bug. I could see all the ¨cannot set freq 16000 to ep 0x86" when I do a dmesg in the terminal. Also my sound indicator was muted and I could not adjust the sound. I also have a Logitech webcam (not sure what model) and I am running a new install of 11.10 64-bit.
After I unplugged my webcam I could again adjust my sound and the system was back to normal.