Bug Failed to get number of drivers

When I start up Unity I get this error in the console:

 

Do you have PulseAudio installed and enabled? Sound doesn't seem to work without it.

Edit: Check if PulseAudio is running with pulseaudio --status

 

I get this message:

pulseaudio: unrecognized option '--status'

 

@The Little Guy ..

To check if pulseaudio is running you can do either

ps -e | grep pulseaudio , and see if it finds the daemon process , or you can do

pulseaudio --check; echo $?

echo $? shows you the exit status of the previous command, and pulseaudio --check will exit 0 if pa is running for the current user, according to the manpage. In other words if you get a 0 on the console you know pulseaudio is running.

 

@kborch

I get an exit code of "1" I tried starting it, but it didn't start

 

@The Little Guy

Ok, do you get some errors on the console then?

Did you try like this: pulseaudio

Or like this: pulseaudio --start

Or both?

Did it complete by itself or hang when you tried?

 

actually I did it like this:

sudo service pulseaudio start

doing this worked though:

pulseaudio

pulseaudio --start

Started the service

 

After restarting Unity, my driver issue is gone!

I get this message though (which I was getting before):

 

Congrats!

Perhaps mark this as solved then.

kLargestEditorClassID == ms_MaxClassID

^^ I get this error as well but only once on startup, as far as I can tell

 

Unfortunately this is also happening in the Linux standalone builds. Especially problematic when running a headless build on a dedicated server which obviously won't run any audio stuff.
At startup:

Code (csharp):

1.  
2. NullGfxDevice:
3.     Version:  NULL 1.0 [1.0]
4.     Renderer: Null Device
5.     Vendor:   Unity Technologies
6. FMOD failed to get number of drivers ... An error occured that wasn't supposed to.  Contact support.

After assemblies have been loaded:

Code (csharp):

1.  
2. Platform assembly: /home/sdtd/engine/7DaysToDieServer_Data/Managed/Boo.Lang.dll (this message is harmless)
3. Error: Cannot create FMOD::Sound instance for resource sharedassets0.resource, (An invalid object handle was used. )
4.  
5. (Filename:  Line: 858)
6.  
7. Function SoundHandle::Instance::~Instance() may only be called from main thread!
8.  
9. (Filename:  Line: 25)
10.  
11. Unable to enable tracing: Invalid argument
12.  
13. (Filename:  Line: 1323)
14.  
15. Error: Cannot create FMOD::Sound instance for resource sharedassets0.resource, (An invalid object handle was used. )
16.  
17. (Filename:  Line: 858)
18.  
19. Function SoundHandle::Instance::~Instance() may only be called from main thread!
20.  
21. (Filename:  Line: 25)
22.  
23. Unable to enable tracing: Invalid argument
24.  
25. (Filename:  Line: 1323)
26.  
27. Error: Cannot create FMOD::Sound instance for resource sharedassets0.resource, (An invalid object handle was used. )
28.  
29. (Filename:  Line: 858)
30.  
31. Function SoundHandle::Instance::~Instance() may only be called from main thread!
32.  

(And so on)

Also sometimes later on:

Code (csharp):

1. Error: Cannot create FMOD::Sound instance for resource resources.resource, (An invalid object handle was used. )

Does not seem to affect the server so far but also didn't do any stress tests as this is currently an internal only build. Same as with shaders and stuff: Why does the headless build have to even initialize this stuff?


Regards,
Chris

 

This is occurring in certain builds when PulseAudio is available but not running (a fix will be available in an upcoming build).
As a workaround, you can enable (or remove) PulseAudio.

 

Thanks
On my machine it's only libpulseaudio that's installed, but I suppose that's what you mean by "available"

 

In older versions, it tries to run pulseaudio --check - in newer versions (before the fix), it mistakenly just checks for libpulse-simple.so.0

 

Yeah, it's a 5.3.3p2 build, so that explains why it's doing that

 

I have similar issue on Android, when building with “split obb” option. In runtime application freezes instead of starting OBB download:

Code (csharp):

1. E/Unity(8332): Error: Cannot create FMOD::Sound instance for resource sharedassets0.resource, (File not found. )
2. E/Unity(8332):
3. E/Unity(8332): (Filename:  Line: 858)
4. E/Unity(8332): Function SoundHandle::Instance::~Instance() may only be called from main thread!
5. E/Unity(8332):
6. E/Unity(8332): (Filename:  Line: 25)
7. E/mono(8332): Unhandled Exception: System.ExecutionEngineException: SIGILL

 

I solved installing pulseaudio:

sudo apt-get install pulseaudio