Re: Sound error: Couldn't allocate DMA buffer

Gregory Maxwell (linker@z.ml.org)
Sun, 11 Apr 1999 04:25:49 -0400 (EDT)


On Sat, 10 Apr 1999, jumeaux lists wrote:

> Hi there. I keep getting this sort of thing in my syslog when
> something's trying to play through /dev/dsp:
>
> Apr 9 13:11:29 odin kernel: Sound error: Couldn't allocate DMA buffer
> Apr 9 13:12:00 odin last message repeated 48 times
> Apr 9 13:13:01 odin last message repeated 121 times

You are out of big physically contigious blobs of memory under 16MBs for
DMA buffers. You can put in dmabuf=1 as an option to sound.o or set a
config param at compile time if you dont use modules.

Anyone know how difficult a hack it would be to add the ability to rope
off 1meg or so of <16MB ram for such buffers at boot time?

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