[mythtv-users] Sound problems, aplay /dev/dsp doesnt work?

Thu Jun 12 19:23:58 EDT 2003

Following the instructions to the letter on the ALSA site for this card I changed modules.conf as follows:

alias eth0 tulip
alias char-major-81 bttv
alias char-major-195 nvidia

# ALSA portion
alias char-major-116 snd
alias snd-card-0 sb

# module options should go here
post-install sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || :
pre-remove sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || :
options sound dmabuf=1
options opl3 io=0x388
alias synth0 awe_wave
post-install awe_wave /bin/sfxload /etc/midi/GU11-ROM.SF2
options sb isapnp=1

# OSS/Free portion
alias char-major-14 soundcore
alias sound-slot-0 snd-card-0

# card #1
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss

And I still can get sound from xmms, and I hear the driver getting loaded, and lsmod shows the following:

[root at localhost root]# lsmod
Module                  Size  Used by    Tainted: P
snd                    40260   0  (autoclean)
mousedev                5236   1  (autoclean)
input                   5632   0  (autoclean) [mousedev]
nvidia               1670784  10  (autoclean)
iptable_filter          2316   0  (autoclean) (unused)
ip_tables              14488   1  [iptable_filter]
autofs                 12148   0  (autoclean) (unused)
nfs                    74424   2  (autoclean)
lockd                  53968   1  (autoclean) [nfs]
sunrpc                 77084   1  (autoclean) [nfs lockd]
tulip                  42464   1
sb                      8980   1
sb_lib                 40974   0  [sb]
uart401                 8036   0  [sb_lib]
sound                  70132   1  [sb_lib uart401]
soundcore               6116   5  [snd sb_lib sound]
ext3                   64704   2
jbd                    47860   2  [ext3]

But I still get the following

[root at localhost root]# aplay /dev/dsp
aplay: main:480: audio open error: No such device

for /dev/dsp, dev/dsp0, dev/dsp1 etc

If anyone knows what the correct settings shoudl be, I would be greatful.

I also followed the complete ALSA instructions for the AWE 32 and this modules.conf will not load snd-sbawe:

alias eth0 tulip
alias char-major-81 bttv
alias char-major-195 nvidia

# ALSA portion
alias char-major-116 snd
alias snd-card-0 snd-sbawe

# module options should go here

# OSS/Free portion
alias char-major-14 soundcore
alias sound-slot-0 snd-card-0

# card #1
alias sound-service-0-0 snd-mixer-oss
alias sound-service-0-1 snd-seq-oss
alias sound-service-0-3 snd-pcm-oss
alias sound-service-0-8 snd-seq-oss
alias sound-service-0-12 snd-pcm-oss

Running modprobe snd-sbawe produces...

[root at localhost root]# modprobe snd-sbawe
/lib/modules/2.4.20-18.9/kernel/sound/isa/sb/snd-sbawe.o: init_module: No such device
Hint: insmod errors can be caused by incorrect module parameters, including invalid IO or IRQ parameters.
      You may find more information in syslog or the output from dmesg
/lib/modules/2.4.20-18.9/kernel/sound/isa/sb/snd-sbawe.o: insmod /lib/modules/2.4.20-18.9/kernel/sound/isa/sb/snd-sbawe.o failed
/lib/modules/2.4.20-18.9/kernel/sound/isa/sb/snd-sbawe.o: insmod snd-sbawe failed

Any suggestions would be greatfully appreciated.

Thanks again

------ original message ------
From: Bruce Markey <bjm at lvcm.com>
To: Discussion about mythtv <mythtv-users at snowman.net>
Sent: Thu Jun 12 16:34:32 MDT 2003
Subject: Re: [mythtv-users] Sound problems, aplay /dev/dsp doesnt work?

Johnny Stork wrote:
 > Thanks to the quick and accurate suggestions about the AMD K6 issue, I am now closer to getting MythTV running, but sound problems persist.
 > 
 > Sound card is an AWE32 in a 16 bit ISQ slot
 > .
 > -----------------------------
 > modules.conf contains:
 > 
 > alias eth0 tulip
 > alias char-major-81 bttv
 > alias sound-slot-0 sb
 > post-install sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || :
 > pre-remove sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || :
 > options sound dmabuf=1
 > options opl3 io=0x388
 > alias synth0 awe_wave
 > post-install awe_wave /bin/sfxload /etc/midi/GU11-ROM.SF2
 > options sb isapnp=1
 > alias char-major-195 nvidia
 > 
 > -------------------------------
 > 
 > I muted the line-in since my Hauppaug card has a line going into the line-in on the AWE card.
 > 
 > I can run XMMS and play an MP3 fine and get sound.
 > 
 > I have disabled aRts from the KDE Control Panel.
 > 
 > ------------------------------
 > aplay /dev/dsp returns the following:
 > 
 > [root at localhost root]# aplay /dev/dsp
 > aplay: main:480: audio open error: No such device
 
 "No such device" usually means the device file exists but
 there is no driver associated with that file. /dev/dsp
 is normally a sym link to dsp0 . For ALSA to associate
 a sound card with dsp0, you need a line in modules.conf for:
 
 alias snd-card-0 snd-XXX
 
 but I don't see this in the modules.conf segment you sent.
 
 Go to: <a href="http://www.mythtv.org/docs/mythtv-HOWTO-7.html#ss7.1"target="top">http://www.mythtv.org/docs/mythtv-HOWTO-7.html#ss7.1</a>
 and look over the section on how to edit your modules.conf .
 
 -- bjm
 
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