So, after a while tried it again and I finally managed to get the headphone jack working:
1) Update to grub2 if this has not yet been done. 2) Set the following acpi kernel parameter in /etc/default/grub GRUB_CMDLINE_LINUX="uveau.modeset=0 acpi_enforce_resources=lax" 3) update-grub 4) Reboot 5) After suspending, run init-headphone to reactivate the headphones. You can automate the headphone reactivation by adding the script /lib/systemd/system-sleep/init-headphone with content: #!/bin/sh if [ ! -x /usr/sbin/init-headphone ]; then exit 0 fi case $1 in resume|thaw|post) /usr/sbin/init-headphone ;; esac This is similar to old workarounds found elsewhere on the web, but with xenial /lib/systemd/system-sleep/ has superseded by /etc/pm/sleep.d/ and the case "post" has to be added. -- 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/1622730 Title: No sound on headphones after suspend Status in alsa-driver package in Ubuntu: Confirmed Bug description: This seems to be a common problem on XMG Clevo W230SS there is no output on the headphone jack after suspend. The headphones are detected and the speakers are muted, but there is no output to the headphones. Init-headphones does not help: sudo init-headphone WARNING:root:Kernel parameter is missing: acpi_enforce_resources=lax WARNING:root:Module is not loaded: i2c_dev ERROR:root:Can't find i2c bus ERROR:root:Operation failed Any workaround beside reboot? ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: alsa-base 1.0.25+dfsg-0ubuntu5 ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16 Uname: Linux 4.4.0-36-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: pia 23276 F.... pulseaudio /dev/snd/controlC0: pia 23276 F.... pulseaudio CurrentDesktop: GNOME-Classic:GNOME Date: Mon Sep 12 21:56:08 2016 InstallationDate: Installed on 2015-11-05 (312 days ago) InstallationMedia: Ubuntu 14.04.3 LTS "Trusty Tahr" - Beta amd64 (20150805) PackageArchitecture: all SourcePackage: alsa-driver UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/15/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 4.6.5 dmi.board.asset.tag: Tag 12345 dmi.board.name: W230SS dmi.board.vendor: Notebook dmi.board.version: Not Applicable dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 9 dmi.chassis.vendor: Notebook dmi.chassis.version: N/A dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr4.6.5:bd04/15/2014:svnNotebook:pnW230SS:pvrNotApplicable:rvnNotebook:rnW230SS:rvrNotApplicable:cvnNotebook:ct9:cvrN/A: dmi.product.name: W230SS dmi.product.version: Not Applicable dmi.sys.vendor: Notebook modified.conffile..etc.modprobe.d.alsa-base.conf: [modified] mtime.conffile..etc.modprobe.d.alsa-base.conf: 2016-02-15T00:43:38.504815 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1622730/+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