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List:       kde-multimedia
Subject:    Warning: device /dev/dsp can't be opened
From:       Richard Bos <allabos () freeler ! nl>
Date:       2001-08-19 13:52:01
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After the upgrade to kde-2.2 I get the warning message as written in the 
subject.  I can listen to CD's using kmix and kscd.

It seems I'm not the only one, more people at the suse mailinglist reported 
this problem, but there is no solution yet.  Is this a suse problem or a kde 
one?

Looking forward to any hints, (please keep me on the CC when responding as 
I'm not subscribed to the list)


This is the info I have for now:

I've a regular SB16 card, and suse-7.2.

Error while initializing the sound driver
device /dev/dsp can't be opened (No such device)

The sound server will continue, using the null output device.

richard@linux:/dev > ls -l dsp*
lrwxrwxrwx    1 root     root            4 Jul 17 17:32 dsp -> dsp0
crw-------    1 richard  users     14,   3 May 21 14:21 dsp0
crw-------    1 richard  users     14,  19 May 21 14:21 dsp1
crw-------    1 richard  users     14,  35 May 21 14:21 dsp2
crw-------    1 richard  users     14,  51 May 21 14:21 dsp3
crw-rw----    1 root     root      55,   0 May 21 14:21 dsp56k
(I'm investigating what the correct settings should be)

According kcontrol->sound I've the following info
Sound driver:3.8.1a-980706 (Alsa v0.5.11 emulation code)
Kernel: linux 2.4.4-4GB
Config options: 0

Installed drivers:
Tupe 1-: ALSA emulation

Card config:
Ensonic AudioPCI ES1371 at 0xb400, irq 5

Audio devices:
0: ES1371 DAC2/ADC (DUPLEX)

Synth devices: NOT enabled in CONFIG

Midi devices:
0: ES1371

Timers:
7: system timer

Mixers:
0: TriTech (23)

lsmod gives the following:
snd-pcm-oss            18816   0  (autoclean)
snd-pcm-plugin         15024   0  (autoclean) [snd-pcm-oss]
snd-mixer-oss           5120   1  (autoclean) [snd-pcm-oss]
snd-seq-midi            3568   0  (unused)
snd-seq-midi-event      2992   0  [snd-seq-midi]
snd-seq                42656   0  [snd-seq-midi snd-seq-midi-event]
snd-card-ens1371        2208   1
snd-ens1371             9632   0  [snd-card-ens1371]
snd-pcm                30560   0  [snd-pcm-oss snd-pcm-plugin snd-ens1371]
snd-timer               8560   0  [snd-seq snd-pcm]
snd-rawmidi             9664   0  [snd-seq-midi snd-ens1371]
snd-seq-device          4032   0  [snd-seq-midi snd-seq snd-rawmidi]
snd-ac97-codec         24576   0  [snd-ens1371]
snd-mixer              24224   0  [snd-mixer-oss snd-ens1371 snd-ac97-codec]
snd                    34032   1  [snd-pcm-oss snd-pcm-plugin snd-mixer-oss 
snd-seq-midi snd-seq-midi-event snd-seq snd-card-ens1371 snd-ens1371 snd-pcm 
snd-timer snd-rawmidi snd-seq-device snd-ac97-codec snd-mixer]
soundcore               3632   5  [snd]


An excerpt from my /etc/modules.conf:
(I assume I have to do something with this, but I haven't read the underneath 
mentioned README file yet....
#*****************************************************************************
# Example configs for ALSA
# You don't need to run isapnp with ALSA, it has full PnP support.
# See /usr/share/doc/packages/alsa/README.SuSE
#*****************************************************************************
#
# ALSA native device support and OSS emulation support. Uncomment these
# lines to enable ALSA:
#
# alias char-major-14      soundcore
# alias char-major-116     snd
# alias sound-slot-0       snd-card-0
# 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
#
# Uncomment this line too, you can setup your ALSA device permissions here:
#
# options snd snd_major=116 snd_cards_limit=1 snd_device_mode=0666 
snd_device_gid=17 snd_device_uid=0
#
# ALSA Card examples:
#
#     Creative SB16 PnP (ALSA will do isapnp itself per default):
#
# alias snd-card-0 snd-card-sb16
# options snd-card-sb16 snd_index=0

-- 
Richard Bos
For those who have no home the journey is endless

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