[alsa-devel] Can't connect to MIDI output of Edirol UA-1000

Colin Fletcher colin.m.fletcher at googlemail.com
Tue Sep 18 17:14:48 CEST 2012

On 18/09/12 15:47, Colin Fletcher wrote:
> On 18/09/12 15:23, Clemens Ladisch wrote:
>> Colin Fletcher wrote:
>>> I've just recently noticed that connections to the MIDI output
>>> of my Edirol UA-1000 fail when using the snd_ua101 driver in
>>> recent kernels.
>>> aconnect simply reports "Connection failed (Input/output 
>>> error)"; a2jmidid -e says "ERROR: a2j_port_create: 
>>> snd_seq_connect_to() for 20:0 failed with error -5"
>> Are there any error messages in the system log?
> Hi Clemens,
> Not a squeak in/var/log/syslog or /var/log/messages when I try to 
> connect using aconnect, no. Can you think of anywhere else I might
> look?
> Colin.

Just a little more info: 'strace aconnect 20:0 20:0' shows that the
SNDRV_SEQ_IOCTL_SUBSCRIBE_PORT ioctl on "/dev/snd/seq" is the thing
which is giving the EIO error.


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