Hello all,

Apologies if this is a double post - my last one didn't seem to get through.
I'm trying to get audio working on the AT91SAM9263-EK, using the latest Linux binary download from http://www.at91.com/linux4sam/bin/view/ ... ingStarted (configured to run from nand-flash).
I can login fine and set volumes with alsamixer. If I do "cat /dev/urandom > /dev/dsp" I can then hear noise. If I do "mplayer /usr/share/gpe-conf/activate.wav" I get some sound. However if I do "aplay /usr/share/gpe-conf/activate.wav" I get a kernel oops:


I've tried to insert the soundcore kernel module, but it seems to be compiled against 2.6.20, so complains about mismatching headers. I noticed in the boot up information the line: "FATAL: Could not load /lib/modules/2.6.27/modules.dep: No such file or directory" which may be related??

I've tried older binaries, building my own binaries, trying to load in modules I've built etc. but I keep having this trouble with aplay. The actual app I want to use produces the same fault as aplay, so I figure if I fix one I'll fix the other.

Any help gratefully appreciated!
John

We had discussion about audio on that board - use search.

I suggest moving to 2.6.28 or 2.6.30 kernel - they work fine for me on this board. And Linux4sam repository is now deprecated - I am waiting for Atmel guys to finish upgrading it to newer version.

Hi Marcin,

Thanks for your help. I thought I'd tried all of the info in the board's messages, but apparently not. Setting the default device to type hw, card 0 in /etc/asounr.conf does seem to have prevented aplay from crashing. I can even record and playback sound!

I'm now updating to 2.6.30 as advised - though I've had to switch from the instructions on Angstrom site (which includes a branch to the stable version) to the instructions on the OE site in order to get your updates... There's probably a quicker way to do it if I understood git better, but I figure a clean repo might be better.

Thanks again.
John

Hi all,

Have now got 2.6.30 working nicely and audio does indeed work 'out-of-the-box'.

Just a quick heads-up if you're using the .tcl script from linux4sam to load your images into nand flash via sam-ba... There are 2 rather than 3 partitions in 2.6.30, so you need to change the load address of your rootfs from 0x00400000 to 0x04000000 otherwise you'll get a 'can't find init' type error at boot up. Hope that helps someone.

John