This is fixed in: https://github.com/torvalds/linux/commit/afcedeb
Please backport this to Yakkety and to Xenial (once lp:1574498 fix is released)
---
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: marco 2143 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=e95ce812-4be1-4186-9f30-e10d6d6430f5
InstallationDate: Installed on 2016-05-02 (28 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Beta amd64 (20160415)
MachineType: LENOVO 20F9CTO1WW
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-23-generic.efi.signed root=UUID=328bf97f-143a-483c-8ca9-282e1bfbdf79 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-23.41-generic 4.4.10
RelatedPackageVersions:
linux-restricted-modules-4.4.0-23-generic N/A
linux-backports-modules-4.4.0-23-generic N/A
linux-firmware 1.157
Tags: xenial
Uname: Linux 4.4.0-23-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo vboxusers
_MarkForUpload: True
dmi.bios.date: 04/14/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: N1CET43W (1.11 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20F9CTO1WW
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40697 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias: dmi:bvnLENOVO:bvrN1CET43W(1.11):bd04/14/2016:svnLENOVO:pn20F9CTO1WW:pvrThinkPadT460s:rvnLENOVO:rn20F9CTO1WW:rvrSDK0J40697WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20F9CTO1WW
dmi.product.version: ThinkPad T460s
dmi.sys.vendor: LENOVO
apport information