I have followed the instructions (last updated January 2013) at 
wiki.debian.org/echoaudio very closely with my 8.3.0 installation; after 
entering modprobe snd-echo3g I received the following message:

[ 3129.360760] snd_echo3g 0000:0a:0e.0: firmware: failed to load 
ea/echo3g_dsp.fw (-2)
[ 3129.360765] snd_echo3g 0000:0a:0e.0: Direct firmware load failed with error 
-2
[ 3129.360768] snd_echo3g 0000:0a:0e.0: Falling back to user helper
[ 3129.550716] snd_echo3g: probe of 0000:0a:0e.0 failed with error -12

Noticing that nothing else used the /usr/local/lib/firmware/ location, I then 
moved the /ea directory into /lib/firmware and repeated the modprobe commands, 
which does not produce sound but does produce an interesting result:

[ 3376.878071] snd_echo3g 0000:0a:0e.0: firmware: direct-loading firmware 
ea/echo3g_dsp.fw
[ 3377.252008] snd_echo3g: probe of 0000:0a:0e.0 failed with error -5

So apparently echo3g_dsp.fw can be loaded from /lib/firmware (direct-loading) 
and not /usr/local/lib/firmware (failed to load), but something else still 
needs to be done differently. Unfortunately I can find no references for the 
error codes. I imagine -2 means the file is missing from an expected location, 
but have no idea what -12 and -5 could mean; can someone explain them?

This sound card did work under Squeeze perfectly well, using the completely 
different instructions linked from the Alsa project site. I am willing to use 
them later as a last resort.

Thank you,

Dymitry
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