Unfortunately the trick with the L/R channel muting worked (on both "Internal Microphone" and "Microphone" devices I can see in pavucontrol). I tried to install the alsa-hda-dkms .deb provided in that ticket, but it doesn't seem to install cleanly. I'm pasting the output from dpkg -i and also the referenced make.log file
Preparing to replace alsa-hda-dkms 0.1 (using alsa-hda-dkms_0.1_all.deb) ... ------------------------------ Deleting module version: 0.1 completely from the DKMS tree. ------------------------------ Done. Unpacking replacement alsa-hda-dkms ... Setting up alsa-hda-dkms (0.1) ... Loading new alsa-hda-0.1 DKMS files... First Installation: checking all kernels... Building only for 3.5.0-17-generic Building for architecture x86_64 Building initial module for 3.5.0-17-generic Error! Bad return status for module build on kernel: 3.5.0-17-generic (x86_64) Consult /var/lib/dkms/alsa-hda/0.1/build/make.log for more information. dpkg: error processing alsa-hda-dkms (--install): subprocess installed post-installation script returned error exit status 10 Errors were encountered while processing: alsa-hda-dkms ** Attachment added: "/var/lib/dkms/alsa-hda/0.1/build/make.log" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1072146/+attachment/3423731/+files/make.log -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1072146 Title: [Lenovo Thinkpad X220, Conexant CX20590] No microphone input To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1072146/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
