Hi,

the problem described by
https://lists.archlinux.org/pipermail/arch-general/2015-April/038789.html
still appears with 4.0.1-1-ARCH.

I'm using Rt kernels, so I don't care about this kernel. I just want
to inform that it still isn't fixed and at least it's an issue for the
OP of the thread and it was for one engineer subscribed to Linux audio
users.

After booting the kernel run aconnect or qjackctl.
No MIDI devices are available.

$ aconnect -i
client 0: 'System' [type=kernel]
0 'Timer '
1 'Announce '
client 14: 'Midi Through' [type=kernel]
0 'Midi Through Port-0'

$ amidi -l
Dir Device Name
IO hw:0,0 HDSPMx579bcc MIDI 1
IO hw:1,0 TerraTec EWX24/96 MIDI
IO hw:2,0 TerraTec EWX24/96 MIDI

$ sudo modprobe snd_seq_midi

$ aconnect -i
client 0: 'System' [type=kernel]
0 'Timer '
1 'Announce '
client 14: 'Midi Through' [type=kernel]
0 'Midi Through Port-0'
client 16: 'RME AIO_579bcc' [type=kernel]
0 'HDSPMx579bcc MIDI 1'
client 20: 'TerraTec EWX24/96' [type=kernel]
0 'TerraTec EWX24/96 MIDI'
client 24: 'TerraTec EWX24/96' [type=kernel]
0 'TerraTec EWX24/96 MIDI'

Regards,
Ralf