This article describes how to get *Quake 3 engine games such as***Enemy Territory** to work with ALSA.
"/dev/dsp: Input/output error Could not mmap /dev/dsp"message
Read the OssEmulation documentation
about setting the parameters for OSS via the
/proc interface. For some
people trying to play ET, the following works:
echo "et.x86 0 0 direct" > /proc/asound/card0/pcm0p/oss
which changes the playback part of OSS (indicated by the
You will generally need to add write permissions even for the root user
in order to echo anything to
remember your new settings will not be preserved following a reboot.
You may also need to try this:
echo "et.x86 0 0 disable" > /proc/asound/card0/pcm0c/oss
which disables capture (meaning microphone input? PCM input?):
This is not enough for some driver modules such as
cs46xx for which
you need to enable
mmap explicitly via a module option. See the
relevant ALSA modules pages for more
info on your driver modules.
On the M-Audio Revolution 7.1 with enemy-territory, all the above does
is change the error message to:
Could not set /dev/dsp to stereo=2.
An easy-fix workaround is using esd 0.2.35 or above as an intermediate, just type...
esddsp --mmap mygame
Where mygame is the name of the game, and it will probably run. You should have esd (esound) installed (and esd active) of course.
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