[SOLVED] alsa with dmix + openal (minecraft)

Stuferus · 01-08-2014, 01:04 PM

hi,

i did setup my alsa with dmix from here:
http://alien.slackbook.org/dokuwiki/...slackware:alsa
i used version 1 and that works nice with systemsounds, teamspeak 3 client from slackbuilds and firefox with flash.

whats not working is minecraft aka openal.

im using slackware64 14.1.

i did google and search but didnt find anything on how to make openal work with dmix.

i dont want to use any other sound system than alsa if i not really have to.

at the moment im swiching between kde and xfce, not sure what i wanna finaly use but that point shouldnt matter to much for my sound problem.

thanks
Stefan

Alien Bob · 01-08-2014, 01:48 PM

I had the same issue initially: no sound in minecraft.
What I did was inspect the file ~/.minecraft/bin/natives/libopenal.so to see it it accepted any kind of configuration file, and I found one:

Code:

strings ~/.minecraft/bin/natives/libopenal.so | grep -i alsoft.conf
/etc/openal/alsoft.conf
ALSOFT_CONF
        Please rename it to /etc/openal/alsoft.conf

So I searched the OpenAL source and ran into an example of this configuration file: http://repo.or.cz/w/openal-soft.git/...lsoftrc.sample
What I did was create the directory /etc/openal and copying this example file into /etc/openal/alsoft.conf . I uncommented one line as follows:

Code:

...
[alsa]

## device:
#  Sets the device name for the default playback device.
device = default
...

And I had sound in minecraft.
What follows is stranger: I decided to delete that file /etc/openal/alsoft.conf because I was trying to figure out how Jack, ALSA and OpenAL interact... and deleting the file made no difference! I still had sound in minecraft.
This has remained working after several reboots. Somewhere, another configuration file must have been updated but I have no idea where.

I intend to install this example file as /etc/openal/alsoft.conf.example when I update my OpenAL package.

Eric

Stuferus · 01-08-2014, 02:13 PM

thanks eric, ill give it a try. only sound in teamspeak isnt fun without sound in minecraft..

Stuferus · 01-09-2014, 09:34 AM

nope, did not work..

i still get this:

Quote:

2014-01-09 14:44:23 [Information] [STDOUT] Initializing LWJGL OpenAL
2014-01-09 14:44:23 [Information] [STDOUT] (The LWJGL binding of OpenAL. For more information, see http://www.lwjgl.org)
2014-01-09 14:44:24 [Schwerwiegend] [Minecraft-Client] Realms: Invalid session id
ALSA lib pcm_dmix.c:1022

snd_pcm_dmix_open) unable to open slave
AL lib: (EE) alsa_open_playback: Could not open playback device 'default': Das Gerät oder die Ressource ist belegt
2014-01-09 14:44:25 [Information] [STDOUT] Error in class 'LibraryLWJGLOpenAL'
2014-01-09 14:44:25 [Information] [STDOUT] Unable to initialize OpenAL. Probable cause: OpenAL not supported.
2014-01-09 14:44:25 [Information] [STDOUT] ERROR MESSAGE:
2014-01-09 14:44:25 [Information] [STDOUT] Could not locate OpenAL library.
2014-01-09 14:44:25 [Information] [STDOUT] STACK TRACE:
2014-01-09 14:44:25 [Information] [STDOUT] org.lwjgl.openal.AL.create(AL.java:151)
2014-01-09 14:44:25 [Information] [STDOUT] org.lwjgl.openal.AL.create(AL.java:102)
2014-01-09 14:44:25 [Information] [STDOUT] org.lwjgl.openal.AL.create(AL.java:201)
2014-01-09 14:44:25 [Information] [STDOUT] paulscode.sound.libraries.LibraryLWJGLOpenAL.init(LibraryLWJGLOpenAL.java:164)
2014-01-09 14:44:25 [Information] [STDOUT] paulscode.sound.SoundSystem.CommandNewLibrary(SoundSystem.java:1576)
2014-01-09 14:44:25 [Information] [STDOUT] paulscode.sound.SoundSystem.CommandQueue(SoundSystem.java:2572)
2014-01-09 14:44:25 [Information] [STDOUT] paulscode.sound.CommandThread.run(CommandThread.java:121)
2014-01-09 14:44:25 [Information] [STDOUT] ERROR MESSAGE:
2014-01-09 14:44:25 [Information] [STDOUT] Could not locate OpenAL library.
2014-01-09 14:44:25 [Information] [STDOUT]
2014-01-09 14:44:25 [Information] [STDOUT] Starting up SoundSystem...
2014-01-09 14:44:25 [Information] [STDOUT] Switching to No Sound
2014-01-09 14:44:25 [Information] [STDOUT] (Silent Mode)
2014-01-09 14:44:25 [Information] [STDOUT]

i had teamspeak running.

"Das Gerät oder die Ressource ist belegt" means something like "the device is busy"

i did put alsoft.conf in /etc/openal but didnt put ~/.alsoftrc

any idea?
edit: oh.. i should maybe say.. i dont have multilib installed..

edit1: ok, i learnd teamspeak isnt really for linux - at least if you dont have pulseaudio which takes care of the audio streams like windows does. mumble runs fine with dmix and stuffs.. oh well.. ill may have found a workaround (aoss) but im still not sure, still testing.

if someone has any additonal ideas about openal, alsa, the dmix stuff and teamspeak i would like to hear them.

ps.: i had the same trouble in the 90s with alsa and teamspeak2. not really nice memorys

Stuferus · 01-14-2014, 11:25 AM

ok, i solved my sound problem by using methode 2 you can find in the slackbook link from the first post, set chmod +x for alsa oss in rc.d and edited the teamspeak3 client start skript in /opt/Teamspeak3 so it starts with aoss.

now i have dmixed and dsnooped sound everywhere.

it really feels like alsa configuration didnt change since the 90's where i tryed it first.

thanks anyway to everyone and eric for the entry in the slackbook wiki, it really helped as the alsa websides as sorta cryptic to me

bye