The acer timeline series, or at least some of the models, have this problem too (same intel sound hardware). see bug https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/459982
In post #17 there's a workaround, it would be interesting to know if it helps people here too. What it boils down to, is that the left channel of the microphone seems to be used to cancel out noises being transmitted through the chassis of the laptop. For example: disk and fan vibrations and typing or tapping noises. When the left and right microphone input are balanced not only undesirable noises get canceled out but your voice gets canceled out too. The trick is to decrease the left channel a little compared to the right channel of the "capture" input in alsamixer. Use Q Z E and C to move only the right or left channel slider up or down. This is not a fix, since "capture" also affects the external microphone (and probably other 'captures' though I didn't test that). For more details see bug #459982 post #17 -- [regression] Built-in mic not working after pulse updates on Karmic. Intel 82801H (ICH8 Family) sound card. https://bugs.launchpad.net/bugs/409819 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
