you have to send email to ubuntu audio dev team how to ugrade alsa driver to include the patch
Fix invalid connections in VT1802 codec and the pin fixup of the subwoofer 0x33 and 0x24 can be replaced by early patching http://git.kernel.org/?p=linux/kernel/git/tiwai/sound.git;a=blob_plain;f=Documentation/sound/alsa /HD-Audio.txt;h=7813c06a5c71d70a353862a6fec6713d3d73da3b;hb=HEAD -- 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/1081263 Title: [W250ENQ / W270ENQ, VIA VT1802, Speaker, Internal] Internal sub-woofer does not work Status in “alsa-driver” package in Ubuntu: New Bug description: I recently bought a GenesisIV from pcspecialist.co.uk. It is a re- badged Clevo W250ENQ. The sub-woofer functions fine in Windows (which I have since removed), but doesn't work in Ubuntu. speaker-test produces pink noise for the left and right channel, but nothing for LFE (the sub-woofer). There's a greyed-out sub-woofer volume slider in the pulseaudio widget (see attachment), but I think this might be a red herring. I've tried adjusting/unmuting all the channels in alsamixer, but doesn't seem to do anything. The module I'm using is snd-hda-intel and the codec is VIA VT1802. ProblemType: Bug DistroRelease: Ubuntu 12.10 Package: alsa-base 1.0.25+dfsg-0ubuntu3 ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7 Uname: Linux 3.5.0-18-generic x86_64 ApportVersion: 2.6.1-0ubuntu6 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jamie 1578 F.... pulseaudio Date: Tue Nov 20 19:23:36 2012 InstallationDate: Installed on 2012-11-20 (0 days ago) InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5) MarkForUpload: True PackageArchitecture: all ProcEnviron: LANGUAGE=en_GB:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_Jack: Speaker, Internal Symptom_PulsePlaybackTest: PulseAudio playback test successful Symptom_Type: Only some of outputs are working Title: [W250ENQ / W270ENQ, VIA VT1802, Speaker, Internal] Playback problem UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 06/01/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.5 dmi.board.asset.tag: Tag 12345 dmi.board.name: W250ENQ / W270ENQ dmi.board.vendor: CLEVO CO. dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: No Enclosure dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd06/01/2012:svnCLEVOCO.:pnW250ENQ/W270ENQ:pvrNotApplicable:rvnCLEVOCO.:rnW250ENQ/W270ENQ:rvrNotApplicable:cvnNoEnclosure:ct9:cvrN/A: dmi.product.name: W250ENQ / W270ENQ dmi.product.version: Not Applicable dmi.sys.vendor: CLEVO CO. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1081263/+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
