Audio issue (no sound in guest systems)

[riccardizio]

Hello, I can't hear any sound in my guest systems.

My host: Windows 10 home edition on Asus 64 bit PC (Audio is ok here)
My Virtualbox installation: Version 5.1.14 r112924 (Qt5.6.2) on Windows with correctly installed Extension pack in host system and GuestAdditions in the guest system.
My guests: 64-bit Ubuntu 16.04 (8192Mb RAM) and 32-bit Windows XP (2048Mb) (audio is not working in both guest systems)

The following Audio options are available when I define a virtual machine:
Windows DirectSound or Driver Audio Null--> Audio Controller:

• Intel HD Audio, ICH AC97, SoundBlaster 16

(unfortunately with no result for any combination of them I chose)

What the user interface reports when I start a VM (with any guest system) selecting Windows Direct Sound option:

Code: Select all

No audio devices could be opened. Selecting the NULL audio backend with the consequence that no sound is audible.
ID Errore: HostAudioNotResponding
Gravità:  Attenzione

What the log says (full zipped logs in attachment):

Code: Select all

00:00:02.641757 Audio: Initializing DirectSound audio driver
00:00:02.641780 Audio: Using VBox 5.0.x audio code!
00:00:02.679900 supR3HardenedErrorV: supR3HardenedScreenImage/LdrLoadDll: rc=VERR_LDRVI_NOT_SIGNED fImage=1 fProtect=0x0 fAccess=0x0 \Device\HarddiskVolume4\Windows\System32\dsound.dll: Not signed.
00:00:02.679947 supR3HardenedErrorV: supR3HardenedMonitor_LdrLoadDll: rejecting 'C:\WINDOWS\System32\dsound.dll' (C:\WINDOWS\System32\dsound.dll): rcNt=0xc0000190
00:00:02.680000 DSound: DirectSound not available: REGDB_E_CLASSNOTREG
00:00:02.680066 Audio: Initializing NULL driver
00:00:02.680071 Audio: Using VBox 5.0.x audio code!
00:00:02.680078 Audio: Host audio backend supports 1 output streams and 2 input streams at once
00:00:02.680087 VM: Raising runtime error 'HostAudioNotResponding' (fFlags=0x0)
00:00:02.680092 Console: VM runtime error: fatal=false, errorID=HostAudioNotResponding message="No audio devices could be opened. Selecting the NULL audio backend with the consequence that no sound is audible"
00:00:02.680131 AC97: Reset

Any suggestion will be really appreciated. Thank you in advance.
Riccardo.

[scottgus1]

I think the section:

Code: Select all

00:00:02.679900 supR3HardenedErrorV: supR3HardenedScreenImage/LdrLoadDll: rc=VERR_LDRVI_NOT_SIGNED fImage=1 fProtect=0x0 fAccess=0x0 \Device\HarddiskVolume4\Windows\System32\dsound.dll: Not signed.
00:00:02.679947 supR3HardenedErrorV: supR3HardenedMonitor_LdrLoadDll: rejecting 'C:\WINDOWS\System32\dsound.dll' (C:\WINDOWS\System32\dsound.dll): rcNt=0xc0000190
00:00:02.680000 DSound: DirectSound not available: REGDB_E_CLASSNOTREG

might be pertinent. It seems to mean that there's something wrong with your host's sound files that's preventing them from passing the security certificate database check. Maybe a bit flipped somewhere.

Check for new drivers for your host sound card, or open a Run-As-Administrator command prompt and run the command sfc /scannow to check and reset Windows files.

[riccardizio]

I think the section:

Code: Select all

00:00:02.679900 supR3HardenedErrorV: supR3HardenedScreenImage/LdrLoadDll: rc=VERR_LDRVI_NOT_SIGNED fImage=1 fProtect=0x0 fAccess=0x0 \Device\HarddiskVolume4\Windows\System32\dsound.dll: Not signed.
00:00:02.679947 supR3HardenedErrorV: supR3HardenedMonitor_LdrLoadDll: rejecting 'C:\WINDOWS\System32\dsound.dll' (C:\WINDOWS\System32\dsound.dll): rcNt=0xc0000190
00:00:02.680000 DSound: DirectSound not available: REGDB_E_CLASSNOTREG

might be pertinent. It seems to mean that there's something wrong with your host's sound files that's preventing them from passing the security certificate database check. Maybe a bit flipped somewhere.

Check for new drivers for your host sound card, or open a Run-As-Administrator command prompt and run the command sfc /scannow to check and reset Windows files.

Hello scottgus1, I apologize for the delay in replying.
You were right. There were something wrong in my host's sound files. Since I was experincing problems with different devices, I repaired my windows10 installation using the operating system "Update and recovery" functionality and all problems were solved.
Thank you wery much for your help.
Riccardo.