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xenial /lib/systemd/system-sleep/ has superseded by /etc/pm/sleep.d/ and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.
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https://bugs.launchpad.net/bugs/1622730
Title:
No sound on headphones after suspend
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