[ALSA - driver 0001047]: module hangs at seemingly random times

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1047> 
======================================================================
Reported By:                alien999999999
Assigned To:                mjander
======================================================================
Project:                    ALSA - driver
Issue ID:                   1047
Category:                   PCI - au88x0
Reproducibility:            sometimes
Severity:                   block
Priority:                   normal
Status:                     assigned
Distribution:               Mandrake
Kernel Version:             2.6.7
======================================================================
Date Submitted:             04-12-2005 20:43 CEST
Last Modified:              06-26-2006 02:46 CEST
======================================================================
Summary:                    module hangs at seemingly random times
Description: 
sometimes i start playing a song, and it starts playing a few second or so
and hangs, then i kill the application and modprobe -r all sound modules
and modprobe them again to make it work again.

BUT: sometimes not only that happens, but also when i try to kill the apps
it will not kill. when that happens, all kill, killall, top, ps aux
commands hang at the command line and cannot be killed by CTRL-C or
otherwise, i have been able to see that when i stopped my display
managener I did an lsmod and it gave something like this:

snd-pcm-oss            59752  11
snd-mixer-oss          20480  1 snd-pcm-oss
snd-au8810             43760  220
snd-ac97-codec         83408  1 snd-au8810
snd-pcm               108172  112 snd-pcm-oss,snd-au8810,snd-ac97-codec
snd-page-alloc         10384  1 snd-pcm
gameport                3840  1 snd-au8810
snd-mpu401-uart        11904  1 snd-au8810


as you can see the snd-au8810 module seem to have an impossible number of
"dependencies" (i think has to do with the number of unclosed sound-apps
trying to be played; this could be since gaim is programmed to execute an
'aplay %s')

i've had this major crash below only 3 times; and the logs didn't detect
anything specific at the time. the only thing the logs mentioned at that
time was an ntpd sync going on; so the only thing i can think of is that
at a certain moment when a sync is going on, some kind of lock is holding
cause this to happen... the only thing that i can do to fix this is
reset...

it is interesting to note that i also have an snd-emu10k1 as second card,
which never gave problems like this, and i am always able to "modprobe -r
snd-emu10k1" ...
======================================================================

----------------------------------------------------------------------
 Raymond - 06-25-06 07:04 
----------------------------------------------------------------------
>> 1. ALSA has hardware mixing if the chipset/driver supports it (i know
mine 
>> does).

>> 2. OSS does not do any multiple sounds

>> so, the OSS application is continually using soundcard. and aplay plays
a 
>> short one... should it work or must aplay be denied???

The au88xx driver in sourceforge also allow two or more instances of
"mplayer -ao oss" or "play" running.

For ALSA au88x0 driver, it depends on the application,

By reducing the number of subdevice of au88x0 device 0 to 2 and have 2
stereo PCM running. (i.e. no available subdevice )

aplay *.wav
aplay: main:548: audio open error: Device or resource busy

mplayer -ao alsa=device=hw=0,0 *.wav
alsa-init: using device hw:0
alsa-lib: pcm_hw.c:1248:(snd_pcm_hw_open) open /dev/snd/pcmC0D0p failed:
Device or resource busy
alsa-init: playback open error: Device or resource busy
Could not open/initialize audio device -> no sound.
Audio: no sound
Video: no video
 
 
Exiting... (End of file)


mplayer -ao oss *.wav
  
[AO OSS] audio_setup: Can't open audio device /dev/dsp: Device or resource
busy
alsa-init: using device default
alsa-lib: pcm_hw.c:1248:(snd_pcm_hw_open) open /dev/snd/pcmC0D0p failed:
Device or resource busy
alsa-init: playback open error: Device or resource busy
[AO ARTS] can't connect to aRts soundserver
[AO ESD] esd_open_sound failed: Connection reset by peer
[JACK] cannot open server
[AO SDL] Samplerate: 44100Hz Channels: Stereo Format s16le
warning: leaving MCOP Dispatcher and still 143 types alive.
[AO SDL] Unable to open audio: No available audio device
open /dev/[sound/]dsp: Device or resource busy
[OpenAL] could not open device
AO: [null] 44100Hz 2ch s16le (2 bytes per sample)

----------------------------------------------------------------------
 Raymond - 06-26-06 02:46 
----------------------------------------------------------------------
>>I don't know if this is true on any driver, but here's what happend
yesterday: 
>> (i have au8810 driver; on x86_64 system)

>> i was watching google video on my system

>> (google video is a flash thing; thus emulated and uses OSS (the only
app that 
>> needs it)) and suddenly gaim reconnected a network and beeped using
aplay   
>> (ALSA) as a result, the sound was played, all sound looped (also
flash), and a
>> few hours later, my /var/log/kernel/warnings was > 600MB (kernel
warnings).

It seem that you only send the kernel warning to rlrevell.

flash open playback/capture stream and use up 4 SRC, do gaim also open
capture stream ?

For ALSA au88x0 driver, it is possible to run two or more instances of
"arecord" or "record" concurrently

Most of the ALSA drivers don't support this, (This is why dsnoop is not
needed for au88x0)
Do OSS emulation official support this feature ?

Issue History
Date Modified  Username       Field                    Change              
======================================================================
04-12-05 20:43 alien999999999 New Issue                                    
04-12-05 20:43 alien999999999 Distribution              => Mandrake        
04-12-05 20:43 alien999999999 Kernel Version            => 2.6.7           
04-12-05 20:48 alien999999999 Note Added: 0004461                          
04-12-05 20:49 alien999999999 File Added: au88x0.c                         
04-12-05 20:49 alien999999999 File Added: au88x0.h                         
04-12-05 20:50 alien999999999 File Added: au88x0_core.c                    
04-12-05 20:50 alien999999999 File Added: au88x0_mixer.c                    
04-12-05 20:51 alien999999999 Note Added: 0004462                          
08-24-05 11:13 Raymond        Note Added: 0005928                          
10-27-05 02:27 Raymond        Note Added: 0006564                          
01-03-06 04:04 Raymond        Note Added: 0007397                          
01-04-06 22:08 alien999999999 Note Added: 0007455                          
01-05-06 07:21 Raymond        Note Added: 0007462                          
01-05-06 20:32 shurick        Issue Monitored: shurick                     
01-06-06 17:17 alien999999999 Note Added: 0007488                          
01-06-06 17:33 alien999999999 File Added: alsa-cvs-2006-01-04.patch             
      
01-13-06 13:51 Raymond        Note Added: 0007639                          
01-13-06 18:18 tiwai          Note Added: 0007648                          
01-14-06 04:53 Raymond        Note Added: 0007653                          
01-14-06 05:00 Raymond        Note Edited: 0007653                         
01-17-06 12:27 Raymond        Note Added: 0007697                          
01-18-06 15:51 Raymond        Note Added: 0007710                          
01-18-06 15:52 Raymond        File Added: au88x0_codec.patch                    
01-19-06 13:51 Raymond        Note Added: 0007719                          
02-05-06 05:20 Raymond        Note Edited: 0007710                         
02-05-06 05:28 Raymond        Note Added: 0007930                          
02-13-06 16:38 Raymond        Note Deleted: 0006564                        
02-13-06 16:41 Raymond        Note Added: 0008054                          
03-01-06 07:39 Raymond        Note Added: 0008273                          
03-18-06 12:28 Raymond        Note Deleted: 0008273                        
03-20-06 17:54 Raymond        File Added: au88x0_conf.patch                    
03-21-06 02:02 Raymond        Note Added: 0008734                          
03-21-06 18:01 tiwai          Note Added: 0008754                          
03-22-06 02:05 Raymond        File Added: au88x0_mpu401.patch                   

03-22-06 02:28 Raymond        Note Added: 0008779                          
03-22-06 02:31 Raymond        Note Edited: 0008779                         
03-22-06 02:38 rlrevell       Note Added: 0008782                          
03-22-06 04:00 Raymond        Note Added: 0008836                          
03-22-06 04:09 rlrevell       Note Added: 0008839                          
03-26-06 09:55 Raymond        Note Added: 0008967                          
03-29-06 17:48 Raymond        Note Added: 0008995                          
03-31-06 06:52 Raymond        Note Edited: 0008995                         
04-02-06 07:01 Raymond        Note Edited: 0008995                         
04-10-06 16:07 Raymond        Note Added: 0009190                          
04-10-06 16:39 tiwai          Note Added: 0009192                          
04-10-06 16:43 Raymond        Note Added: 0009194                          
04-10-06 16:45 tiwai          Note Added: 0009195                          
04-10-06 19:01 Raymond        Note Added: 0009215                          
04-10-06 19:04 Raymond        Note Edited: 0009215                         
04-10-06 19:05 tiwai          Note Added: 0009216                          
04-11-06 18:36 Raymond        Note Added: 0009234                          
04-11-06 18:54 tiwai          Note Added: 0009235                          
06-25-06 07:04 Raymond        Note Added: 0010502                          
06-26-06 02:46 Raymond        Note Added: 0010522                          
======================================================================



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