Hi all. I used a Lenovo G470 laptop (Core i5 2410M processor, AMD Radeon 6370M and 2GB DDR3 RAM) and I installed Ubuntu 12.04 Beta 2.
I can't get the microphone to work. I encountered this type of issue before in my old Acer Aspire One with Ubuntu 10.04/10.10, and installing PulseAudio Volume Control and tweaking a little solves the problem. I tried the same solution to no avail.
cat /proc/asound/card0/codec* | grep Codec gives the following result:
Codec: Conexant CX20590
Codec: Intel CougarPoint HDMI
Does anybody encountered a similar problem? Any help will be greatly appreciated.