Re: I/O error on /dev/dsp and /dev/audio

["G. Crimp" <ye416@freenet.victoria.bc.ca>]

On Thu, Jul 01, 1999 at 08:20:01AM +0200, Jens Ritter wrote:
> 
> Does cat /dev/sndstat work?
> 
> Check if sound is compiled in or loaded when a sound request happens
> (check logs). 
> 
> Jens

Ah ha.  The kernel log reports the following:

	kernel: Sound: DMA (output) timed out - IRQ/DRQ config error?

I don't doubt that when I was configuring isapnp I made a mistake.  Can you
give me any more help with this.  I have read the sound HOWTO and the isapnp
docs, but when it comes to reading the pnpdump file I find it pretty
bewildering.  As I mentioned in my initial post, the fact that I had this
working on a Deb 1,3 system was more good luck than anything else.  The
pnpdump output often says to choose only one of a selection, but I am never
sure which one to choose, nor in fact which of several lines constitute a
single choice.  Here is the output from cat /dev/sndstat:

------------------- cat /dev/sndstat -----------------
Sound Driver:3.5.4-960630 (Tue Mar 23 11:47:08 PST 1999 root,
Linux humble 2.0.34 #1 Sun Mar 21 10:18:45 PST 1999 i586 unknown)
Kernel: Linux humble 2.0.34 #1 Tue Mar 23 11:48:33 PST 1999 i586
Config options: 0

Installed drivers: 
Type 1: OPL-2/OPL-3 FM
Type 5: Roland MPU-401
Type 8: 6860 UART Midi
Type 2: Sound Blaster
Type 7: SB MPU-401

Card config: 
Sound Blaster at 0x220 irq 5 drq 0,1
Roland MPU-401 at 0x330 irq 12 drq 0
6860 UART Midi irq 11 drq 0
(SB MPU-401 at 0x800 irq 5 drq 0)
OPL-2/OPL-3 FM at 0x388 drq 0

Audio devices:
0: ESS ES1688 AudioDrive (rev 11) 

Synth devices:
0: Yamaha OPL-3

Midi devices:
0: MPU-401 0.0  Midi interface #1
1: 6850 UART

Timers:
0: System clock

Mixers:
0: Sound Blaster
------------------ end cat /dev/sndstat --------------

	Thanks,

	Gerald

> 
> "G. Crimp" <ye416@freenet.victoria.bc.ca> writes:
> 
> > Hi,
> > 
> > 	I can't write to either /dev/audio or /dev/dsp, even as root.  The
> > permissions on both are crw-rw----.  I discovered when trying to set up
> > RealAudio for a Linux broadcast.  When I tried to cat a file to either of
> > these devices I get "cat: write error: Input/output error".
>