I am experiencing the same scenario. My x220 had properly working microphone/sound up until about 4-6 weeks ago. Something I did/installed seems to have brought this problem about. I can follow the instructions for verifying the inverted microphone, but oddly my situation is reversed. I need to completely mute the left channel (not the right as indicated in the inverted microphone ticket).
As well, I was unable to install the the .deb file from the inverted microphone ticket, the issue being that it seems that the fixes in the .deb file may already be in my kernel. Any help would be greatly appreciated. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1072146 Title: [Lenovo Thinkpad X220, Conexant CX20590] No microphone input Status in “alsa-driver” package in Ubuntu: New Bug description: I get no microphone input on my fresh install of 12.10 on a Lenovo X220 (Intel i7 CPU). When I open up the volume control panel, I see no movement in the indicator as I speak into the microphone and also there's no sound coming through on the other end in a Skype conversation ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: pulseaudio 1:2.1-0ubuntu4 ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5 Uname: Linux 3.5.0-17-generic x86_64 ApportVersion: 2.6.1-0ubuntu6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chris 1823 F.... pulseaudio Date: Sat Oct 27 19:29:17 2012 InstallationDate: Installed on 2012-10-15 (12 days ago) InstallationMedia: Xubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20120926) MarkForUpload: True SourcePackage: pulseaudio UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/31/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET47WW (1.17 ) dmi.board.asset.tag: Not Available dmi.board.name: 429149G dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8DET47WW(1.17):bd05/31/2011:svnLENOVO:pn429149G:pvrThinkPadX220:rvnLENOVO:rn429149G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 429149G dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO modified.conffile..etc.pulse.daemon.conf: [modified] mtime.conffile..etc.pulse.daemon.conf: 2012-10-27T19:26:56.816260 --- ApportVersion: 2.6.1-0ubuntu6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: chris 1851 F.... pulseaudio DistroRelease: Ubuntu 12.10 InstallationDate: Installed on 2012-10-15 (19 days ago) InstallationMedia: Xubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20120926) MarkForUpload: True Package: alsa-base 1.0.25+dfsg-0ubuntu3 PackageArchitecture: all ProcVersionSignature: Ubuntu 3.5.0-17.28-generic 3.5.5 Tags: quantal running-unity Uname: Linux 3.5.0-17-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers dmi.bios.date: 05/31/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8DET47WW (1.17 ) dmi.board.asset.tag: Not Available dmi.board.name: 429149G dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr8DET47WW(1.17):bd05/31/2011:svnLENOVO:pn429149G:pvrThinkPadX220:rvnLENOVO:rn429149G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 429149G dmi.product.version: ThinkPad X220 dmi.sys.vendor: LENOVO mtime.conffile..etc.modprobe.d.alsa.base.conf: 2012-11-04T10:01:06.836588 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1072146/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
