I am using mandrake 10 and when I try to play it I have no sound and when I run it in the terminal I get this,

/dev/dsp: Input/Output error
Could not mmap /dev/dsp

anybody?

Mandrake is still using devfs so the sound devices are not in the normal place. You just need to make a symlink to the real dsp0 device.
/dev/dsp -> /dev/audio/dsp0

I think that's where it's at but it might be:
/dev/dsp -> /dev/sound/dsp0

How do I cange it to do that?

I tried entering it in the terminal and I got this,

[alan@dhcppc1 alan]$ su
Password:
[root@dhcppc1 alan]# /dev/dsp -> /dev/sound/dsp0
bash: /dev/sound/dsp0: Permission denied

[alan@dhcppc1 alan]$ su
Password:
[root@dhcppc1 alan]# /dev/dsp -> /dev/audio/dsp0
bash: /dev/audio/dsp0: Not a directory

Top make a symlink, try (actually, don't try, this is how you make a symlink):

root#> ln -sf /dev/sound/dsp0 /dev/dsp

Then change permissions so it can be used as a normal user:

root#> chmod 777 /dev/dsp

Had this same problem with Enemy Territory.

I did that now I get this /dev/dsp: No such file or directory
Could not open /dev/dsp

Ok, let's try this again.

1. Does /dev/sound/dsp0 exist?

2. I don't think the original problem had anything to do with symlinks. I think it was permissions (thus the chmod 777 part).

3. If /dev/sound/dsp0 does exist and you have made a symbolic link as root to /dev/dsp and changed permissions then i don't know what is wrong. Sorry.

Another note - which is a little off topic - is the chmod 777 might have to go into your rc.local (or equiv. for Mandrake to start up commands at boot i.e. adsl-start ). Every time the system reboots it will go back to root ownership and will not work until you chmod 777 /dev/dsp.

All i got.

Edit** - While i have been typing /dev/sound it might also be /dev/audio (as /bin/bash had mentioned). Just look for dsp0 and make a symlink to it as /dev/dsp.

Okay guys I had the same problem and Im still working on it, but here is the reason why it doesnt work. Wolfenstein, and Wolfenstein Enemy Territory, use OSS sound, NOT ALSA. Most of the time linux distros just install ALSA right out the box. I guess you need to install some kinda OSS/ALSA emulation. Im still not sure, but there is a text file with the Wolfenstein ET install for linux

I have OSS sound driver and the enemy territory game sound does not work. Anyone have this and have to do any modifications to make it work?

hi, firstly could you search for the location of the REAL (not a link to) dsp device and then post it.
also "ln -sf /dev/blabla /dev/dsp" doesn't replace existing links, you need to "rm /dev/dsp" first (making sure you are not deleting the REAL device).

I list a command: 'ls /dev/dsp*' gives: There is a link from dsp to dps0, i remove this link, but there is still no sound in the program.

crw------- 1 root root 14, 3 Jul 28 12:56 /dev/dsp0
lrwxrwxrwx 1 root root 9 Jul 28 12:56 /dev/dsp -> /dev/dsp0

I see. can you browse /dev and find /dev/sound or /dev/audio? if so, can you print the output of:

ls -l /dev/sound or
ls -l /dev/audio

please.

edit: try permissions first though!

ie:

chmod 666 /dev/dsp0

Changing user permissions does not work.
'ls -l /dev/sound/' gives nothing.

'ls -l /dev/audio' gives a link to dsp:
lrwxrwxrwx 1 root root 8 Jul 27 16:41 /dev/audio -> /dev/dsp

hmm.