[arch-general] Kernel Module snd_seq_midi No Longer Inserted Automatically
sgrace at pobox.com
Fri Apr 10 00:28:41 UTC 2015
On 04/09/2015 12:20 AM, Ralf Mardorf wrote:
> there also isn't a module snd_seq_midi loaded on my MIDI and audio
> production machine.
> $ lsmod | grep snd_seq_midi
Ralf, thank you for your response.
On my Arch systems I have the same result as you for "lsmod | grep
snd_seq"; snd_seq_midi is not listed. However, I'm convinced that
snd_seq_midi *was* listed until sometime in March, and it's still listed
on an Ubuntu-based installation running on the same machine.
> For what is the module needed?
Without snd_seq_midi I don't have normal ALSA MIDI input, although I
believe I still have some form of raw MIDI input. The output of
"aconnect -i" doesn't list my MIDI devices until I manually add
Ralf, I know you're a musician, so if you use MIDI please feel free to
verify this on your Arch system. With a MIDI input device connected (and
powered on, if USB), I predict that "aconnect -i" won't list your MIDI
device/interface. Add snd_seq_midi with modprobe, and "aconnect -i"
should now list your MIDI device.
I don't wish to bore the list with the specifics of how MIDI works in
Linux. All I'm trying to find out is how to diagnose this module problem
further. I know that module snd_seq_midi is part of the "linux" package
but I don't know what process used to add the module automatically; was
it the Linux kernel, or ALSA, or something else? I think the change is a
regression and I'd like it to be fixed but I don't know what package is
responsible and would like to know how to find out. Thanks.
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