Problem: Sound and /dev/dsp on 3.2

**gfrick** · 05-05-2003, 03:48 PM

I recently installed Knoppix 3.2 on the hard disk of Toshiba Tecra 8000 laptop, replacing version 3.1. Now I am unable to play audio cd's or us xmms. On booting I get the info that "device /dev/dsp can't be opened (no such device) The sound server will continue using null device".

Under 3.1 the sound worked ok after installing modules: sound.o,soundcore.o, ad1848 and the following in /etc/modules.

alias sound-slot-0 ad1848
alias synth0 opl3
options sound dmabuf=1
options opl3 io=0x388
options ad1848 io=0x530 dma=1 irq=5 dma2=0
post-install sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>$1 || :
preinstall sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrxrc -S >/dev/null 2>$1 || :

Making athese changes under 3.2 is not effective. I have done extensive searches on Gloogle, Knoppix Forum and other sites without success.

Can anyone help me on this? Is there any link that can be added to /dev/dsp to fix the problem?

gfrick

**aay** · 05-05-2003, 06:16 PM

Have you tried using ALSA? Do a test from the cd by using the following at boot: "knoppix alsa"

Post back results.

P.S.

If this is on a hdinstall try running /etc/init.d/alsa-autoconfig as root

**Stephen** · 05-05-2003, 08:02 PM

Originally Posted by gfrick

I recently installed Knoppix 3.2 on the hard disk of Toshiba Tecra 8000 laptop, replacing version 3.1. Now I am unable to play audio cd's or us xmms. On booting I get the info that "device /dev/dsp can't be opened (no such device) The sound server will continue using null device".

Can anyone help me on this? Is there any link that can be added to /dev/dsp to fix the problem?

gfrick

Make sure you are a member of the audio group (type groups in console window)
and that you have read-write permission ls -la /dev/dsp to check. To add your self to group adduser < username > audio to make the device read-write for users chmod +urw /dev/dsp both these as root in a console.
[edit]
You have to log out and back in for the group addition to take effect.
[/edit]

**gfrick** · 05-05-2003, 08:07 PM

It is a hdinstall.

There is no file /etc/init.d/alsa-autoconfig on my distribution.

gfrick

**gfrick** · 05-05-2003, 10:27 PM

Stephen

gfrick is set as a member of audio and the permissions for /dev/dsp are 777.
ls -la /dev/dsp = crwxrwxrwx 1 root audio 14, 3 april 15 2001 /dev/dsp

The warning I am getting says that there is no such device as /dev/dsp.

Thanks for answering.

gfrick

**aay** · 05-05-2003, 10:53 PM

Originally Posted by gfrick

It is a hdinstall.

There is no file /etc/init.d/alsa-autoconfig on my distribution.

gfrick

Hmm. ALSA was added only on the more recent releases of 3.2. But I forgot to ask if you have run sndconfig? Try running sndconfig as root.

Adam

**mxferreira** · 05-06-2003, 01:19 AM

Originally Posted by aay

Hmm. ALSA was added only on the more recent releases of 3.2. But I forgot to ask if you have run sndconfig? Try running sndconfig as root.

Adam

Excuse for my english, because I speak portuguese.
I have the same problem of the gfrick in the Kurumim (descendent of the knoppix).
In the forum of the Kurumim they speaked for me try sndconfig, but no function. If to funtion for you speak me, please.
If you to obtein result speak me please.
Thank you.
Ps: If you speak in portuguese, I will be happy!

Max

**gfrick** · 05-07-2003, 06:02 PM

Hi;

Well sndconfig didnt help.

What irks me is that in the past I have installed RED HAT 7.1 & 7.3, MANDRAKE 9.0, aand NOPPIX 3.1 on this laptop and had no problem configuring the sound.

It all seems to come back to /dev/dsp. The warnings I get say this device cannot be opened as there is no such device.

I really don't know where to go from here.

gfrick

**aay** · 05-07-2003, 06:56 PM

Do you see any errors if you run "dmesg |less" ?

Perhaps you could post the output of "lspci"?

Apart from getting some information from theses sources and finding something to address, I can only suggest that you update to the latest release and see if using ALSA will help.

**gfrick** · 05-08-2003, 03:14 AM

Hi

Output from dmesg that pertains to sound.

YM3812 and OPL-3 Driver Copyright (c) by Hannu Savolainen. Rob Hooft 1993-1996
ad1848/cs4248 codec driver Copyright (c) by Hannu Savelianen 1993-1996
ad1848 No ISAPnP cardws found. Trying standard ones...

Output of lspci

00:00.0 Hlost bridge: Intel Corp. 440BX/ZXC/DX - 82443BX/ZX/DX Host bridge (AGP disabled)
00:03.0 ISA brsidge: Toshiba America Info Systems: Unknown device 0611 (rev 41)
00:04:.0 VGA compatible controller:P NeoMagic Corporation NM2200 [MagicGraph 256AV]
00:05.0 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ISA (rev 02)
00:05.1 IDE interface: Intel Corp. 82371AB/EB/MB PIIX4 IDE (rev 01)
00:05.2 USB Controller: Intel Corp. 8237AB/EB/MB PIIX4 USB (rev 01)
00:05.3 Bridge: Intel Corp. 82371AB/EB/MB PIIX4 ACPI (rev 02)
00:06.0 Ethernet controller: Intel Corp. 82557/8/9 (Ethernet Pro 100) (rev 05)
00:09.0 Communication controller:: Toshiba America Info Systems FIR Port (rev 23)
00:0b.0 Cardbus bridge: Toshiba America Info Systems ToPIC97 (rev 05)
00:0b.0 CardBus bridge: Toshiba America Info Systems ToPIC97 (rev 05}

The above seems to be a rather abreveated from that I have had before. Studied it quite extensively while I was trying to get the Winmodem to work. I gave up on that a long time ago.

gfrick