[算解决了]alsa声卡独占问题

Havanna

安装了alsa-lib alsa-oss alsa-utils

mpd 后mpc play可以完美播放声音
此时再mplayer 123.mp3

1. [AO_ALSA] alsa-lib: pcm_dmix.c:1010:(snd_pcm_dmix_open) unable to open slave
   
2. [AO_ALSA] Playback open error: Device or resource busy
   
3. Failed to initialize audio driver 'alsa'
   
4. [AO_ALSA] alsa-lib: pcm_dmix.c:1010:(snd_pcm_dmix_open) unable to open slave
   
5. [AO_ALSA] Playback open error: Device or resource busy
   
6. DVB card number must be between 1 and 4
   
7. AO: [null] 48000Hz 2ch s16le (2 bytes per sample)
   
8. Starting playback...

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mp3没有声音

如果停掉mpc 即mpc stop
则mplayer 123.mp3很正常

1. lsmod
   
2. Module                  Size  Used by
   
3. snd_seq_dummy           1542  0
   
4. snd_seq_oss            24687  0
   
5. snd_seq_midi_event      5898  1 snd_seq_oss
   
6. snd_seq                45534  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
   
7. snd_seq_device          5511  3 snd_seq_dummy,snd_seq_oss,snd_seq
   
8. snd_pcm_oss            33010  0
   
9. snd_mixer_oss          12927  1 snd_pcm_oss
   
10. snd_hda_codec_conexant    30927  1
    
11. snd_hda_intel          21310  1
    
12. snd_hda_codec          74046  2 snd_hda_codec_conexant,snd_hda_intel
    
13. snd_hwdep               5722  1 snd_hda_codec
    
14. snd_pcm                70234  3 snd_pcm_oss,snd_hda_intel,snd_hda_codec
    
15. snd_timer              17852  2 snd_seq,snd_pcm
    
16. snd                    55667  13 snd_seq_oss,snd_seq,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_hda_codec_conexant,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_timer
    
17. ath5k                 118823  0
    
18. snd_page_alloc          7141  2 snd_hda_intel,snd_pcm
    
19. ath                     9206  1 ath5k

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1. aplay -l
   
2. **** List of PLAYBACK Hardware Devices ****
   
3. card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   
4.   Subdevices: 1/1
   
5.   Subdevice #0: subdevice #0
   
6. card 0: Intel [HDA Intel], device 1: Conexant Digital [Conexant Digital]
   
7.   Subdevices: 1/1
   
8.   Subdevice #0: subdevice #

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1. cat /etc/modprobe.d/alsa.conf
   
2. # Alsa kernel modules' configuration file.
   
3. 
   
4. # ALSA portion
   
5. # OSS/Free portion
   
6. 
   
7. ##
   
8. ## IMPORTANT:
   
9. ## You need to customise this section for your specific sound card(s)
   
10. ## and then run `update-modules' command.
    
11. ## Read alsa-driver's INSTALL file in /usr/share/doc for more info.
    
12. ##
    
13. ##  ALSA portion
    
14. ## alias snd-card-0 snd-interwave
    
15. ## alias snd-card-1 snd-ens1371
    
16. ##  OSS/Free portion
    
17. ## alias sound-slot-0 snd-card-0
    
18. ## alias sound-slot-1 snd-card-1
    
19. ##
    
20. 
    
21. # OSS/Free portion - card #1
    
22. ##  OSS/Free portion - card #2
    
23. ## alias sound-service-1-0 snd-mixer-oss
    
24. ## alias sound-service-1-3 snd-pcm-oss
    
25. ## alias sound-service-1-12 snd-pcm-oss
    
26. 
    
27. alias /dev/mixer snd-mixer-oss
    
28. alias /dev/dsp snd-pcm-oss
    
29. alias /dev/midi snd-seq-oss
    
30. 
    
31. # Set this to the correct number of cards.
    
32. 
    
33. # --- BEGIN: Generated by ALSACONF, do not edit. ---
    
34. # --- ALSACONF version 1.0.21 ---
    
35. alias snd-card-0 snd-hda-intel
    
36. alias sound-slot-0 snd-hda-intel
    
37. # --- END: Generated by ALSACONF, do not edit. ---

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1. uname -a
   
2. Linux Apple 2.6.34-gentoo-r11 #1 SMP Thu Oct 21 09:54:41 CST 2010 x86_64 Pentium(R) Dual-Core CPU T4200 @ 2.00GHz GenuineIntel GNU/Linux

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1. cat /usr/src/linux/.config | grep -i "CONFIG_SND_HDA"
   
2. CONFIG_SND_HDA_INTEL=m
   
3. CONFIG_SND_HDA_HWDEP=y
   
4. CONFIG_SND_HDA_RECONFIG=y
   
5. # CONFIG_SND_HDA_INPUT_BEEP is not set
   
6. CONFIG_SND_HDA_INPUT_JACK=y
   
7. # CONFIG_SND_HDA_PATCH_LOADER is not set
   
8. CONFIG_SND_HDA_CODEC_REALTEK=y
   
9. CONFIG_SND_HDA_CODEC_ANALOG=y
   
10. CONFIG_SND_HDA_CODEC_SIGMATEL=y
    
11. CONFIG_SND_HDA_CODEC_VIA=y
    
12. CONFIG_SND_HDA_CODEC_ATIHDMI=y
    
13. CONFIG_SND_HDA_CODEC_NVHDMI=y
    
14. CONFIG_SND_HDA_CODEC_INTELHDMI=y
    
15. CONFIG_SND_HDA_ELD=y
    
16. CONFIG_SND_HDA_CODEC_CIRRUS=y
    
17. CONFIG_SND_HDA_CODEC_CONEXANT=y
    
18. CONFIG_SND_HDA_CODEC_CA0110=y
    
19. CONFIG_SND_HDA_CODEC_CMEDIA=y
    
20. CONFIG_SND_HDA_CODEC_SI3054=y
    
21. CONFIG_SND_HDA_GENERIC=y
    
22. CONFIG_SND_HDA_POWER_SAVE=y
    
23. CONFIG_SND_HDA_POWER_SAVE_DEFAULT=0

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另外顺便问下emerge -av alsa-lib时，alisp的use是作什么用的

Havanna

另外emerge时mpd USE

1. aac alsa bzip2 cue curl ffmpeg fifo flac id3 lame mad network ogg unicode wavpack -ao -audiofile -avahi -cdio -debug -fluidsynth -ipv6 -jack -lastfmradio -libmms -libsamplerate -mikmod -modplug -musepack -oss -pipe -profile -pulseaudio -sid -sqlite -vorbis -zip

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mplayer USE

1. X a52 aac alsa ass cddb cdio dirac directfb dts dv dvb dvd dvdnav enca encode faac faad gif iconv ipv6 jpeg live mmx mp3 network opengl osdmenu png quicktime rar real rtc schroedinger shm speex sse sse2 ssse3 theora toolame tremor truetype twolame unicode vorbis x264 xscreensaver xv xvid -3dnow -3dnowext -aalib (-altivec) -amr -bidi -bindist -bl -bs2b -cdparanoia -cpudetection -custom-cpuopts -debug -dga -doc -dxr3 -esd -fbcon -ftp -ggi -gmplayer -jack -joystick -ladspa -libcaca -lirc -lzo -mad -md5sum -mmxext -mng -nas -nut -openal -oss -pnm -pulseaudio -pvr -radio -samba -sdl (-svga) -teletext -tga -v4l -v4l2 -vdpau (-vidix) (-win32codecs) -xanim -xinerama -xvmc -zoran" VIDEO_CARDS="-mga -nvidia -s3virge -tdfx

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1. cat /etc/make.conf | grep -i "USE="
2. USE="mmx sse sse2 ssse3 -hal -arts -esd -oss -cups opengl -qt4 -qt3 -kde -gpm X dbus alsa gtk2 cdr dvd dbus bash-completion"

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Havanna

还是没解决，发正在mpd 抢占声卡的时候，mplayer无法发声

而使用mplayer同时播放2首mp3，则混音正常.....

汗，解决了....mpd配置文件问题....