seem support surround 5.1 by retasking mic jack http://support1.ap.dell.com/cn/zh/forum/thread.asp?fid=35&tid=132304
-- 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/1284466 Title: [Inspiron 1420, SigmaTel STAC9228, Speaker, Internal] No sound at all Status in “alsa-driver” package in Ubuntu: New Bug description: For a few years sound did not work on this laptop. Sometime during the 13.10 release cycle the problem was fixed in the kernel. Now in the 14.04 after a kernel update sound no longer works. I'm not 100% sure which kernel update broke sound. I will try to install some of the older kernels and track it down. Alsa and PulseAudio both show that the sound is turned all the way up, but no sound plays and the sound tests fail to make any noise too. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-12.32-generic 3.13.4 Uname: Linux 3.13.0-12-generic i686 ApportVersion: 2.13.2-0ubuntu5 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: david 3312 F.... pulseaudio CurrentDesktop: LXDE Date: Tue Feb 25 01:01:28 2014 PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed Symptom_Card: Built-in Audio - HDA Intel Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: lightdm 1907 F.... pulseaudio david 3312 F.... pulseaudio /dev/snd/seq: timidity 1585 F.... timidity Symptom_Jack: Speaker, Internal Symptom_Type: No sound at all Title: [Inspiron 1420, SigmaTel STAC9228, Speaker, Internal] No sound at all UpgradeStatus: Upgraded to trusty on 2013-12-29 (58 days ago) dmi.bios.date: 12/19/2008 dmi.bios.vendor: Dell Inc. dmi.bios.version: A10 dmi.board.name: 0DT492 dmi.board.vendor: Dell Inc. dmi.chassis.type: 8 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA10:bd12/19/2008:svnDellInc.:pnInspiron1420:pvr:rvnDellInc.:rn0DT492:rvr:cvnDellInc.:ct8:cvr: dmi.product.name: Inspiron 1420 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1284466/+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
