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Scott Thornley
n00b
Joined: 03 Nov 2005
Posts: 11
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 Posted: Sat Dec 31, 2005 7:54 pm Post subject: /dev/dsp: No such device - but gaim plays sound ? |
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System is a Shuttle SN25P
I've followed the Gentoo ALSA guide, and used kernel support.
Kernel is 2.6.14-r5 genkernel + menuconfig to add support for the ice1724 audio chip
The module loads just fine:
| Code: | gentoo64 ~ # lsmod
Module Size Used by
nvidia 4856656 12
snd_ice1724 76416 0
snd_ice17xx_ak4xxx 4992 1 snd_ice1724
snd_ac97_codec 107224 1 snd_ice1724
snd_ac97_bus 3072 1 snd_ac97_codec
snd_ak4114 10496 1 snd_ice1724
snd_pcm 96652 3 snd_ice1724,snd_ac97_codec,snd_ak4114
snd_timer 25480 1 snd_pcm
snd_page_alloc 12176 1 snd_pcm
snd_ak4xxx_adda 7552 2 snd_ice1724,snd_ice17xx_ak4xxx
snd_mpu401_uart 8320 1 snd_ice1724
snd_rawmidi 25728 1 snd_mpu401_uart
snd 54192 8 snd_ice1724,snd_ac97_codec,snd_ak4114,snd_pcm,snd_timer,snd_ak4xxx_adda,snd_mpu401_uart,snd_rawmidi
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But when I go to test:
| Code: | scott@gentoo64 ~ $ sudo cat /dev/urandom > /dev/dsp
bash: /dev/dsp: No such device
scott@gentoo64 ~ $ sudo cat /dev/urandom > /dev/dsp1
bash: /dev/dsp1: No such device
scott@gentoo64 ~ $ sudo cat /dev/urandom > /dev/dsp2
bash: /dev/dsp2: No such device
scott@gentoo64 ~ $ sudo cat /dev/urandom > /dev/dsp3
bash: /dev/dsp3: No such device
scott@gentoo64 ~ $ sudo cat /dev/urandom > /dev/audio
bash: /dev/audio: No such device
gentoo64 ~ # cat /etc/group | grep audio
audio:x:18:scott
gentoo64 ~ # ls -la /dev/audio
crw-rw---- 1 root audio 14, 4 Jul 27 09:18 /dev/audio
gentoo64 ~ # ls -la /dev/dsp*
crw-rw---- 1 root audio 14, 3 Jul 27 09:18 /dev/dsp
crw-rw---- 1 root audio 14, 19 Jul 27 09:18 /dev/dsp1
crw-rw---- 1 root audio 14, 35 Jul 27 09:18 /dev/dsp2
crw-rw---- 1 root audio 14, 51 Jul 27 09:18 /dev/dsp3
gentoo64 ~ # ls -la /dev/so*
brw-rw---- 1 root cdrom 15, 0 Jul 27 09:17 /dev/sonycd
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So, there is no /dev/sound/dsp device. So that may be the cause of my problem.
Only, how come gaim is actually able to play sounds ?
Oh, and:
| Code: | scott@gentoo64 ~ $ madplay ~/Downloads/vertigo.mp3
MPEG Audio Decoder 0.15.2 (beta) - Copyright © 2000-2004 Robert Leslie et al.
audio: /dev/dsp: No such device
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I've done a fair amount of googling, and searching here, but must be using the wrong terms, cuz I've not come across anything that shouts "here is your answer"
Scott |
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NeddySeagoon
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Joined: 05 Jul 2003
Posts: 54821
Location: 56N 3W
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| Posted: Sat Dec 31, 2005 8:05 pm Post subject: |
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Scott Thornley,
There are two sound systems in Linux, the orignal Open Sound System (OSS) is being displaced my ALSA.
All your real alsa sound device files are in /dev/snd
You may not install both OSS and ALSA at the same time because trhe fight over the hardware. However, ALSA provides OSS emulation. This populates /dev/sound, just as applications that want OSS expect.
You sem to have missed loading the OSS emulation modules.
| Code: | | modprobe -l | grep oss |
will show if you have build them as modules, if so, modprobe them.
If not, thats the way ahead - build them as modules.
Gaim probably uses ALSA directly.
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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Scott Thornley
n00b
Joined: 03 Nov 2005
Posts: 11
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| Posted: Sat Dec 31, 2005 8:27 pm Post subject: |
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Aarrgh....
I am aware of ALSA vs OSS. And the likely need for OSS emulation, and when I built the kernel, I thought I built those modules.
Nope, not there. I'll build them in.
From your obviously better perspective than mine, does this look about right ? Or do I need to get the CONFIG_SND_SEQUENCER_OSS set ?
| Code: | CONFIG_SOUND=y
#
# Advanced Linux Sound Architecture
#
CONFIG_SND=m
CONFIG_SND_TIMER=m
CONFIG_SND_PCM=m
CONFIG_SND_RAWMIDI=m
CONFIG_SND_SEQUENCER=m
# CONFIG_SND_SEQ_DUMMY is not set
CONFIG_SND_OSSEMUL=y
CONFIG_SND_MIXER_OSS=m
CONFIG_SND_PCM_OSS=m
# CONFIG_SND_SEQUENCER_OSS is not set
CONFIG_SND_RTCTIMER=m
CONFIG_SND_SEQ_RTCTIMER_DEFAULT=y
# CONFIG_SND_VERBOSE_PRINTK is not set
# CONFIG_SND_DEBUG is not set
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Lastly, what is the concensus of compiling in the ALSA and OSS modules, and loading the ones you desire at boot ? This is how many of the mainstream distros do it/did it. But is ALSA support to the point where it's no longer needed ?
Regards,
Scott |
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NeddySeagoon
Administrator
Joined: 05 Jul 2003
Posts: 54821
Location: 56N 3W
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| Posted: Sat Dec 31, 2005 8:39 pm Post subject: |
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Scott Thornley,
That looks OK - you only need do
| Code: | make modules
make modules_install |
then modprobe them.
I always reccomend ALSA with OSS emulation as modules. Its slightly more difficult to set up, since you need to get /etc/modules.d/alsa right or alsasound will not the the modules for you but its much easier to debug.
The major binary distros make it modular - they have fully modular kernel to the point were an initrd is essential for booting.
The alternative is to build all the sound modules in, which is bloat when each user will only need one or two.
I'm not suggesting that you build all the PCI and all the ISA modules.
CONFIG_SND_SEQUENCER_OSS is needed for applications that want to play midi files via OSS.
If you use an app like that you need it.
You can't drop OSS totally yet - not all apps support ALSA
_________________
Regards,
NeddySeagoon
Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail. |
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xbmodder
Guru
Joined: 25 Feb 2004
Posts: 404
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| Posted: Sat Dec 31, 2005 10:17 pm Post subject: |
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"modprobe snd-pcm-oss"
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http://xbmodder.us/ |
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synss
Apprentice
Joined: 08 Mar 2006
Posts: 282
Location: Dijon > Berlin > Tokyo > Nürnberg > München
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| Posted: Sun Apr 23, 2006 3:02 pm Post subject: |
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without the modules, aoss (from emerge alsa-oss) should work as well:
aoss madplay *mp3
can be aliased or put in a script in /usr/local/bin |
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