** Description changed: This is a metabug for all machines that are having phase inverted internal microphones. If your internal mic is either completely silent (no signal), or you can possibly pick a very small sound, with much background noise, even though you have set gain to maximum, there is something you could try. - Install the pavucontrol application, start it and go to the "Input Devices" tab. Unlock the channels (there is a keylock icon), then mute the right channel while keeping the left channel at the volume you want. - If the internal mic is now working correctly, you have an inverted internal mic, so that your right channel cancels out the left one. + Install the pavucontrol application, start it and go to the "Input Devices" tab. Unlock the channels (there is a keylock icon), then mute the right channel while keeping the left channel at the volume you want. + If the internal mic is now working correctly, you have an inverted internal mic, so that your right channel cancels out the left one. + + (If you're not running PulseAudio, you can try doing the same through + AlsaMixer instead (see https://wiki.ubuntu.com/Audio/AlsaMixer ), try + changing "Capture" level or "Internal Mic" or "Internal Mic Boost" using + the Q,E,Z,C keys.) If so, please file a separate bug against the alsa-driver for your issue, make sure hardware info gets attached to it (either alsa-info as per https://wiki.ubuntu.com/Audio/AlsaInfo or the standard ones that follows when you do "ubuntu-bug alsa-driver" ), then write a comment in this bug, with your machine name and a pointer to the other bug. As time permits, I'll try to work on fixing them for the next Ubuntu release. Thanks! - -- David Henningsson + -- David Henningsson
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1002978 Title: [meta-bug] Inverted Internal microphone (phase inversion) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1002978/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
