Public bug reported: I had this problem a week or so ago and fixed it with some patch, or some kill-switch, or something...and now it's back and I don't know how to fix it. It seems to be a popular problem with 12.04 or the drivers? I'm on a lenovo u300s...
ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-u300acpifix1-generic-pae 3.2.14 Uname: Linux 3.2.0-24.37-u300acpifix1-generic-pae i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu7 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: tim 1842 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xf7e00000 irq 49' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:14f1506e,17aa5003,00100002 HDA:80862805,17aa5003,00100000' Controls : 14 Simple ctrls : 6 Date: Fri May 11 02:22:26 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423) PackageArchitecture: all ProcEnviron: TERM=xterm PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:PCH failed Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Mic, Internal Symptom_Type: None of the above Title: [1080, Conexant CX20590, Mic, Internal] Recording problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/09/2012 dmi.bios.vendor: LENOVO dmi.bios.version: 56CN42WW dmi.board.asset.tag: ATN12345678901234567 dmi.board.name: U300s dmi.board.vendor: LENOVO dmi.board.version: 1.0 dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Lenovo IdeaPad U300s dmi.modalias: dmi:bvnLENOVO:bvr56CN42WW:bd01/09/2012:svnLENOVO:pn1080:pvrLenovoIdeaPadU300s:rvnLENOVO:rnU300s:rvr1.0:cvnLENOVO:ct10:cvrLenovoIdeaPadU300s: dmi.product.name: 1080 dmi.product.version: Lenovo IdeaPad U300s dmi.sys.vendor: LENOVO ** Affects: ubuntu Importance: Undecided Status: New ** Tags: apport-bug i386 precise -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/997914 Title: Microphone does not pick up sound To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/997914/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs