I found the solution here: http://bartongeorge.net/2015/04/09/4th-gen- dell-xps-13-developer-edition-available/ : "If dual booting with Windows 8.1 and kernel 4.0 or earlier you will need to cold boot twice into the OS for audio to work."
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1447767 Title: [XPS 13 9343, Intel Broadwell HDMI, Digital Out, HDMI] No sound at all Status in alsa-driver package in Ubuntu: Confirmed Bug description: I installed Ubuntu 15.04 64 bit (desktop editition) on a DELL XPS 13 notebook (model 9343) and I have no sound at all. Before installing Ubuntu I upgraded bios to A03. ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3 Uname: Linux 3.19.0-15-generic x86_64 NonfreeKernelModules: wl ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: cribari 1733 F.... pulseaudio CurrentDesktop: Unity Date: Thu Apr 23 15:46:30 2015 InstallationDate: Installed on 2015-04-23 (0 days ago) InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422) PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:HDMI failed Symptom_Card: Built-in Audio - HDA Intel HDMI Symptom_DevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: cribari 1733 F.... pulseaudio Symptom_Jack: Digital Out, HDMI Symptom_Type: No sound at all Title: [XPS 13 9343, Intel Broadwell HDMI, Digital Out, HDMI] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/25/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: A03 dmi.board.name: 0310JH dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA03:bd03/25/2015:svnDellInc.:pnXPS139343:pvr01:rvnDellInc.:rn0310JH:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: XPS 13 9343 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1447767/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
