I got the same laptop, and I dont have this problem. Im running ubuntu 12.04 in EFI mode. ( Modded the bios to include EFI modules. )
-- 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/998259 Title: [ID47H, Conexant CX20588, Black Headphone Out, Right] No sound at all through any output Status in “alsa-driver” package in Ubuntu: New Bug description: happend in both 12.04 and 11.10 ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic-pae 3.2.14 Uname: Linux 3.2.0-24-generic-pae i686 NonfreeKernelModules: nvidia 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: triggernesss 3100 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xd1c00000 irq 50' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:14f1506c,10250571,00100000 HDA:80862805,80860101,00100000' Controls : 29 Simple ctrls : 13 Date: Fri May 11 16:12:21 2012 InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012) PackageArchitecture: all ProcEnviron: LANGUAGE=en_CA:en TERM=xterm PATH=(custom, no user) LANG=en_CA.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_DevicesInUse: 3100/dev/snd/controlC0: triggernesss F.... pulseaudio Symptom_Jack: Black Headphone Out, Right Symptom_Type: No sound at all Title: [ID47H, Conexant CX20588, Black Headphone Out, Right] No sound at all UpgradeStatus: Upgraded to precise on 2012-05-10 (1 days ago) dmi.bios.date: 05/06/2011 dmi.bios.vendor: Gateway dmi.bios.version: V1.04 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: SJM40_HR dmi.board.vendor: Gateway dmi.board.version: Base Board Version dmi.chassis.type: 10 dmi.chassis.vendor: Gateway dmi.chassis.version: V1.04 dmi.modalias: dmi:bvnGateway:bvrV1.04:bd05/06/2011:svnGateway:pnID47H:pvrV1.04:rvnGateway:rnSJM40_HR:rvrBaseBoardVersion:cvnGateway:ct10:cvrV1.04: dmi.product.name: ID47H dmi.product.version: V1.04 dmi.sys.vendor: Gateway To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/998259/+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