[Latitude E7270, Realtek ALC3235, Speaker, Internal] Pulseaudio fails to detect card, no sound in speaker nor in line out

[Stas]

No sound in speakers or in headphones after upgrade to ubuntu 16.04. No devices shown in Sound settings -> Play sound through
Previously in ubuntu 14.04 sound works good.
sglukhov@Galvatron:~$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC3235 Analog [ALC3235 Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: pulseaudio 1:8.0-0ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/controlC0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CurrentDesktop: Unity
Date: Tue Aug 23 16:24:58 2016
DistributionChannelDescriptor:
 # This is a distribution channel descriptor
 # For more information see http://wiki.ubuntu.com/DistributionChannelDescriptor
 canonical-oem-somerville-trusty-amd64-osp1-20150720-0
InstallationDate: Installed on 2016-01-25 (210 days ago)
InstallationMedia: Ubuntu 14.04 "Trusty" - Build amd64 LIVE Binary 20150720-04:06
SourcePackage: pulseaudio
Symptom: audio
Symptom_Card: HDA-Intel - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Title: [Latitude E7270, Realtek ALC3235, Speaker, Internal] Pulseaudio fails to detect card
UpgradeStatus: Upgraded to xenial on 2016-07-05 (49 days ago)
dmi.bios.date: 11/09/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.0.1
dmi.board.name: 00DTF3
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.0.1:bd11/09/2015:svnDellInc.:pnLatitudeE7270:pvr:rvnDellInc.:rn00DTF3:rvrA01:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7270
dmi.sys.vendor: Dell Inc.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[WhyteHorse (whytehorse)]

This is still a bug in 20.04.3 LTS. It's a fresh install with proprietary drivers enabled from the installer. Could it be routing analog audio to the wrong place? I can get it to work fine with bluetooth headphones, usb headphones on the dock and the laptop. I can't get any audio from the analog jacks on the laptop or the dock or the built in speakers.