hdmi cable off causes no sound output

[jfcgauss]

-plug hdmi cable in to my laptop and LCD tv
-replicate my laptop screen on tv
-from sound settings, select hdmi output
-watch a movie, everything is fine ;)
-plug hdmi cable out of laptop
-now play music/video on laptop but NO sound is heard
-in sound settings, builtin laptop speakers is selected, sound test "works"
-play music/video on laptop but no sound is heard, no change
-open music/video file with VLC player, select Audio > Audo Device, there i see builtin HDMI selected, i select builtin speakers
-sound works again on laptop

so after plugging out hdmi cable, even though i "only" see builtin speakers in sounds settings, hdmi output selection persists, and I cant fix it in sound settings. I have to go to VLC player

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-43.63-generic 4.4.21
Uname: Linux 4.4.0-43-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: serhat 1733 F.... pulseaudio
 /dev/snd/controlC1: serhat 1733 F.... pulseaudio
CurrentDesktop: Unity
Date: Sun Oct 16 01:00:32 2016
InstallationDate: Installed on 2016-04-25 (173 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_SpeakerTestPulseStderr: W r i t e e r r o r : - 3 2 , B r o k e n p i p e
Symptom_Type: None of the above
Title: [CASPER NIRVANA NOTEBOOK, Realtek ALC269VC, Speaker, Internal] Playback problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/18/2014
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: C15B.616
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: C15B
dmi.board.vendor: CASPER BILGISAYAR SISTEMLERI A.S
dmi.board.version: 1.0
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: CASPER BILGISAYAR SISTEMLERI A.S
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrC15B.616:bd03/18/2014:svnCASPERBILGISAYARSISTEMLERIA.S:pnCASPERNIRVANANOTEBOOK:pvr1.0:rvnCASPERBILGISAYARSISTEMLERIA.S:rnC15B:rvr1.0:cvnCASPERBILGISAYARSISTEMLERIA.S:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: CASPER NIRVANA NOTEBOOK
dmi.product.version: 1.0
dmi.sys.vendor: CASPER BILGISAYAR SISTEMLERI A.S