When I had 16.10 everything was fine but when I've installed 17.04 (update was failed because X server crashed because of nvidia drivers) there is few seconds delay after sound is played, the sound and video is in sync but it look like sound is muted when it starts it work when playing next sound or when pausing the sound (for instance in audacious) but I've got delay when I stop and play again.
I've try this in /etc/modprobe.d/alsa-base.conf file as mention in this thread https://ubuntuforums.org/showthread.php?t=1308604
options snd-hda-intel model=laptop enable=1 index=0
options snd-hda-intel power save=0
but got error in dmesg that those options are not supported:
[ 15.253198] snd_hda_intel: unknown parameter 'power' ignored
[ 15.253199] snd_hda_intel: unknown parameter 'save' ignored
the first sound test was without delay but the second one was.
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 4.10.0-19.21-generic 4.10.8
Uname: Linux 4.10.0-19-generic i686
ApportVersion: 2.20.4-0ubuntu4
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: kuba 15418 F.... pulseaudio
CurrentDesktop: XFCE
Date: Sun Apr 16 16:27:58 2017
InstallationDate: Installed on 2017-04-15 (1 days ago)
InstallationMedia: Xubuntu 17.04 "Zesty Zapus" - Release i386 (20170412)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH successful
Symptom_Card: Wbudowany dźwięk - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Symptom_PulsePlaybackTest: PulseAudio playback test failed
Symptom_Type: None of the above
Title: [GL552VW, Conexant CX20751/2, Speaker, Internal] Playback problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 09/06/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: GL552VW.300
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: GL552VW
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrGL552VW.300:bd09/06/2016:svnASUSTeKCOMPUTERINC.:pnGL552VW:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnGL552VW:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: GL552VW
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
modified.conffile..etc.modprobe.d.alsa-base.conf: [modified]
mtime.conffile..etc.modprobe.d.alsa-base.conf: 2017-04-16T15:59:40.113763
I've installed proprietary binary drivers for nvidia graphic card and it seems the issue is gone. I've reported the issue when I had nouveau drivers with nomodeset kernel option.