[JavaGame] A snap question for audio.

[Simon Fels]

On 12.08.2016 04:19, Howy Wang wrote:
> Hi Zygmunt,
> 
> Yes, I got some similar wrong message during "journalctl -f"
> *Aug 12 10:05:26 howy-Vostro-14-5480 audit[6827]: AVC apparmor="DENIED" 
> operation="open" profile="snap.javagame.play" name="/dev/snd/controlC1" pid=6827 
> comm="java" requested_mask="r" denied_mask="r" fsuid=1000 ouid=0
> *
> *
> *
> Should I add more plugs or change something on my snapcraft.yaml?
> Thank you.

This really much looks like your app is directly talking with ALSA
instead of pulseaudio. Can you verify this? The pulseaudio interface
currently only allows directly talking with pulseaudio but AFAIK not
using the ALSA pulse plugin. Can't say that for sure but this is what it
looks like.

regards,
Simon

> 
> 
> 2016-08-11 19:00 GMT+08:00 Zygmunt Krynicki <zygmunt.krynicki at canonical.com 
> <mailto:zygmunt.krynicki at canonical.com>>:
> 
> 
>>     El 11 ago 2016, a las 7:37, Howy Wang <howy.wang at canonical.com
>>     <mailto:howy.wang at canonical.com>> escribió:
>>
>>     Hi there,
>>
>>     I made a snap, javagame and it works well.
>>     Now the snap upload for javagame.howy to the Ubuntu Store has been approved.
>>     But I found something wrong with audio, the following is the wrong message
>>     during running the snap.
> 
>     Do you see any denials in the system log? You can check for them using
>     journalctl -f when you start the game.
> 
>>
>>     *[MUSIC][11:39:29] Playing song: Towards The End*
>>     *[ERROR][11:39:29] Problem playing file
>>     sun.net.www.protocol.jar.JarURLConnection$JarURLInputStream at 61ab49d*
>>     *[ERROR][11:39:29]javazoom.jl.decoder.JavaLayerException: Cannot create
>>     AudioDevice*
>>     *[MUSIC][11:39:29] Playing song: yoshi song*
>>     *[ERROR][11:39:29] Problem playing file
>>     sun.net.www.protocol.jar.JarURLConnection$JarURLInputStream at 35104da8*
>>     *[ERROR][11:39:29]javazoom.jl.decoder.JavaLayerException: Cannot create
>>     AudioDevice*
>>
>>     I have checked my snapcraft.yaml has "plugs" with pulseaudio and "$ snap
>>     interfaces" has ":pulseaudio javagame:, too.
>>     This is the $ snap interfaces
>>
>>     howy at howy-Vostro-14-5480:~/examples/java$ snap interfaces
>>     Slot                 Plug
>>     :camera              -
>>     :cups-control        -
>>     :firewall-control    -
>>     :gsettings           -
>>     :hardware-observe    -
>>     :home              
>>      atom-cwayne,javagame,jtiledownloader,openjdk-demo,qtclocks,wallpaperdownloader
>>     :locale-control      -
>>     :log-observe         snappy-debug
>>     :modem-manager       -
>>     :mount-observe       -
>>     :network             jtiledownloader,openjdk-demo
>>     :network-bind        javagame,jtiledownloader,wallpaperdownloader
>>     :network-control     -
>>     :network-manager     -
>>     :network-observe     -
>>     :opengl              game-2048
>>     :optical-drive       -
>>     :ppp                 -
>>     :pulseaudio          javagame
>>     :snapd-control       -
>>     :system-observe      -
>>     :timeserver-control  -
>>     :timezone-control    -
>>     :unity7              game-2048,openjdk-demo,qtclocks
>>     :x11                
>>     game-2048,javagame,jtiledownloader,qtclocks,wallpaperdownloader
>>
>>     Any suggestions or examples can help to solve audio issue?
>>     Thank you.
>>
>>     -- 
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>>     <https://lists.ubuntu.com/mailman/listinfo/snapcraft>
> 
> 
> 
> 
> -- 
> Regards,
> -- 
> *Howy Wang*
> *O *+886-2-8729-6849 *M*+886 928-258-081
> Field Engineering | Canonical Ltd.
> www.canonical.com <http://www.canonical.com/> | www.ubuntu.com 
> <http://www.ubuntu.com/>
> 
> 
>