No sound in ppssppQt for Linux.

[xenowildfire]

I'm not getting any sound in ppssppQt for Linux, ppssppSDL works fine.

[SergeiAlekseev]

pulseaudio must be installed i think. ppssppqt doesn't work with pure alsa.

[unknownbrackets]

This sounds like a config issue as noted, although maybe it can show better log messages (or maybe it already does?)

-[Unknown]

[xenowildfire]

I think I do have pulseaudio install but i will double check.

I checked and I do have pulseaudio installed

[xenowildfire]

This is what I get when I compile and run inside Qt.
using null output device, none available

[xenowildfire]

I installed Ubuntu 12.04.3 and had Qt4 on it, The sound works in ppssppQt. I am not sure how to install Qt5 so I upgraded to 12.10 and then it wanted to upgrade to 13.10 and I installed Qt5 and I get no sound again, so it must be something to do with qtmultimedia5-dev.
I will go back to 12.04 and try and get Qt5 working right on it.
Btw The last Os that I was using about 2 or 3 weeks ago was Zorin 7.1 based on Ubuntu 13.04.
It might not be anything wrong with anything on your end (Bug Wise)
I think it has to do with upgrading anything that's based on Ubuntu 13.10.

[xenowildfire]

I found this.
http://qt-project.org/forums/viewthread/34867

[unknownbrackets]

http://qt-project.org/wiki/Qt_Multimedia_Backends

Only PulseAudio, CoreAudio, and QNX backends are actual plugins. The other backends are “#ifdef’ed” in the related classes.

Is there a reason why pulseaudio is undesirable?

-[Unknown]

[xenowildfire]

Ok i found a fix here.
http://askubuntu.com/questions/279421/how-can-i-install-qt-5-x-on-12-04-lts
Don't know why it wouldn't work before but now it does.

[OmegaPhil]

I also have this issue - to answer the earlier question, PulseAudio has traditionally been broken bloatware, so best avoided - I have ran on a pure ALSA setup for a year or so now, OSSv4 before that, so an extra framework on top is completely redundant (Debian Testing user here).

I have built ppsspp with Qt4 but now I get 'Unable to create a connection to the pulseaudio context' and no audio... looks like I'll have to look at this later as a project.

[OmegaPhil]

I have wasted many hours looking into this and have finally found out why - ppsspp seems to do very little with audio, its all on Qt4, and the component used (libqtmultimediakit1) has basically been built with a hard dependency on pulse.

For others that are interested, I have reported this as a Debian bug, including a workaround: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=740451

Finally getting ppssppQt to use ALSA was very disappointing - lots and lots stuttering and crackling when playing a game that was apparently running at a smooth 30fps with automatic frame dropping of 1. I went back to the SDL interface for much better sound, but that has issues with fullscreen breaking the desktop etc.

Should I create a new bug asking for working ALSA sound?

[xenowildfire]

After all the searching I found a way to get it to work with Qt5.
I finally figured out how to install it but after 13.04 I think it already has Qt5 ready to install and with doing all the searching to get it to work with 13.10.

As far as I can tell I have no problems with sound using Qt4 Or Qt5 but using SDL I found it breaking my desktop when I would go out of full screen.

I think it would help asking for working sound using ALSA that way a lot of people will be able to benefit using ppsspp on Linux that wants to upgrade to 14.04 when it comes out.

I will stick with what I am using for a while, I will build and upload ppsspp SDL & Qt5 for people that have problems trying to compile it on their computers.

Thanks for helping and everything is wrote down on how I compile it on 13.10 or greater if I am ready to upgrade.

[OmegaPhil]

Just had confirmation from Debian that this bug (hard dependency on Pulse Audio causing an hang in its absence) will not be fixed in Qt4 - sounds like libqtmultimediakit1 you've been building on is junk...

The maintainer recommends to port ppssppQt to Qt5 for the fix...

[unknownbrackets]

Already works with Qt 5. You'd only have the problem if you tried to build it with Qt 4.

-[Unknown]

[OmegaPhil]

OK - I'll be waiting for Qt 5.3.2 to appear in Debian Testing then. It doesn't work with Qt5 currently, otherwise there would have been nothing for upstream to fix (talking about a pure ALSA installation here).

[unknownbrackets]

Well, I meant that PPSSPPQt has already been ported to Qt 5. I don't think we do audio in any non-standard way.

-[Unknown]

[inukaze]

Just try to launch forcing ALSA and not PulseAudio, with a command like :
SDL_AUDIODRIVER="alsa" ./PPSSPPSDL