This might be fixed in the upstream 3.12-rc4 kernel, thanks to this committ:
author Takashi Iwai committer Takashi Iwai commit 4a4370442c996be0fd08234a167c8a127c2488bb tree 274101ba9518fd1f295f90e9db45ae64df8825cc parent dfc2cd7c284aa2dc88b5edbdd08645517a747d37 ALSA: hda - Fix GPIO for Acer Aspire 3830TG Acer Aspire 3830TG seems requiring GPIO bit 0 as the primary mute control. When a machine is booted after Windows 8, the GPIO pin is turned off and it results in the silent output. This patch adds the manual fixup of GPIO bit 0 for this model. Reported-by: Christopher Cc: stable Signed-off-by: Takashi Iwai A PPA of the 3.12-rc4 kernel can be found at http://kernel.ubuntu.com /~kernel-ppa/mainline/ and instructions on how to install and uninstall it are available at https://wiki.ubuntu.com/Kernel/MainlineBuilds -- 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/837627 Title: [HDA-Intel - HDA Intel PCH, playback] No sound at all Status in “alsa-driver” package in Ubuntu: Confirmed Bug description: Aspire 3830TG-6431 with NVidia Optimus and Powersmart running Ubuntu 11.04, vmlinuz-2.6.38-11-generic alsa-base: Installed: 1.0.24+dfsg-0ubuntu1 Candidate: 1.0.24+dfsg-0ubuntu1 Version table: *** 1.0.24+dfsg-0ubuntu1 0 500 http://us.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages 100 /var/lib/dpkg/status expect sound have no sound with exception of power plug notification. ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: alsa-base 1.0.24+dfsg-0ubuntu1 ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8 Uname: Linux 2.6.38-11-generic x86_64 NonfreeKernelModules: nvidia AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: HDA Generic [HDA Generic] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: bob 1597 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xd1c00000 irq 49' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:14f1506c,1025054c,00100000 HDA:80862805,80860101,00100000' Controls : 10 Simple ctrls : 5 Date: Tue Aug 30 15:09:41 2011 InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1) PackageArchitecture: all ProcEnviron: LANGUAGE=en_US:en PATH=(custom, user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed Symptom_Card: Internal Audio - HDA Intel PCH Symptom_DevicesInUse: 1597 Symptom_Type: No sound at all Title: [HDA-Intel - HDA Intel PCH, playback] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/06/2011 dmi.bios.vendor: Acer dmi.bios.version: V1.04 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: JM30_HR dmi.board.vendor: Acer dmi.board.version: Base Board Version dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.04 dmi.modalias: dmi:bvnAcer:bvrV1.04:bd05/06/2011:svnAcer:pnAspire3830TG:pvrV1.04:rvnAcer:rnJM30_HR:rvrBaseBoardVersion:cvnAcer:ct10:cvrV1.04: dmi.product.name: Aspire 3830TG dmi.product.version: V1.04 dmi.sys.vendor: Acer To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/837627/+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
