Please try uninstalling 'timidity' and all 'timidity' related packages. Then reboot.
** Changed in: alsa-driver (Ubuntu) Status: New => Incomplete -- 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/1702821 Title: [Inspiron 5559, Intel ID 2809, Digital Out, HDMI] No sound at all Status in alsa-driver package in Ubuntu: Won't Fix Bug description: Description: Ubuntu 12.04.5 LTS Release: 12.04 N: Unable to locate package pkgname ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1.1 ProcVersionSignature: Ubuntu 3.13.0-117.164~precise1-generic 3.13.11-ckt39 Uname: Linux 3.13.0-117-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-117-generic. ApportVersion: 2.0.1-0ubuntu17.15 Architecture: amd64 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC255 Analog [ALC255 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mahmoud 2157 F.... pulseaudio Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xd2220000 irq 142' Mixer name : 'Intel ID 2809' Components : 'HDA:10ec0255,102806b2,00100002 HDA:80862809,80860101,00100000' Controls : 24 Simple ctrls : 9 Date: Fri Jul 7 07:10:47 2017 InstallationMedia: Ubuntu 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140807.1) MarkForUpload: True PackageArchitecture: all ProcEnviron: TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed Symptom_AlsaPlaybackTestStderr: W r i t e e r r o r : - 5 , I n p u t / o u t p u t e r r o r x r u n _ r e c o v e r y f a i l e d : - 5 , I n p u t / o u t p u t e r r o r T r a n s f e r f a i l e d : O p e r a t i o n n o t p e r m i t t e d Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_DevicesInUse: 2157 1616 mahmoud F.... pulseaudio /dev/snd/seq: timidity F.... timidity Symptom_Jack: Digital Out, HDMI Symptom_Type: No sound at all Title: [Inspiron 5559, Intel ID 2809, Digital Out, HDMI] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 11/20/2015 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.1.3 dmi.board.name: 0K64R6 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 9 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.1.3:bd11/20/2015:svnDellInc.:pnInspiron5559:pvr:rvnDellInc.:rn0K64R6:rvrA00:cvnDellInc.:ct9:cvr: dmi.product.name: Inspiron 5559 dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1702821/+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