[arch-general] Kernel Module snd_seq_midi No Longer Inserted Automatically

[Ralf Mardorf]

On Fri, 10 Apr 2015 17:21:03 -0700, Steven Grace wrote:
>Now I see that you're using an older kernel -- the problem apparently 
>started with kernel version 3.19. You're lucky you're not affected!

Hi,

this is what happens for

[rocketmouse at archlinux ~]$ pacman -Si linux | grep Ver; uname -rm
Version        : 3.19.3-3
3.19.3-3-ARCH x86_64

[1]

and

[rocketmouse at archlinux ~]$ uname -rm
3.18.9-rt5-2-rt x86_64

[2]

So there seemingly is a serious issue on my machine too, but it's not
related to snd_seq_midi, since it's not needed, as you can see by [2]
before the USB devices are connected.

Regards,
Ralf


[1]
Indeed, with and without USB devices connected aconnect -i doesn't see
my MIDI devices, neither the PCI/PCIe, nor the USB devices.

Disconnected USB devices:
[rocketmouse at archlinux ~]$ lsmod | grep midi
snd_rawmidi            26806  2 snd_hdspm,snd_mpu401_uart
snd_seq_device         13307  1 snd_rawmidi
snd                    73436  12 snd_ice1712,snd_ac97_codec,snd_hdspm,snd_hwdep,snd_timer,snd_i2c,snd_pcm,snd_rawmidi,snd_ak4xxx_adda,snd_mpu401_uart,snd_seq_device,snd_cs8427
[rocketmouse at archlinux ~]$ aconnect -i
client 0: 'System' [type=kernel]
    0 'Timer           '
    1 'Announce        '
client 14: 'Midi Through' [type=kernel]
    0 'Midi Through Port-0'

After connecting USB devices:
[rocketmouse at archlinux ~]$ lsmod | grep midi
snd_usbmidi_lib        27571  1 snd_usb_audio
snd_rawmidi            26806  3 snd_hdspm,snd_usbmidi_lib,snd_mpu401_uart
snd_seq_device         13307  3 snd_seq,snd_rawmidi,snd_seq_dummy
snd                    73436  15 snd_ice1712,snd_usb_audio,snd_ac97_codec,snd_hdspm,snd_hwdep,snd_timer,snd_i2c,snd_pcm,snd_seq,snd_rawmidi,snd_usbmidi_lib,snd_ak4xxx_adda,snd_mpu401_uart,snd_seq_device,snd_cs8427
usbcore               199382  9 uas,snd_usb_audio,usb_storage,ohci_hcd,ohci_pci,snd_usbmidi_lib,ehci_hcd,ehci_pci,usbhid
[rocketmouse at archlinux ~]$ aconnect -i
client 0: 'System' [type=kernel]
    0 'Timer           '
    1 'Announce        '
client 14: 'Midi Through' [type=kernel]
    0 'Midi Through Port-0'


[2]
Disconnected USB devices:
[rocketmouse at archlinux ~]$ lsmod | grep midi
snd_rawmidi            30863  2 snd_hdspm,snd_mpu401_uart
snd_seq_device         14497  1 snd_rawmidi
snd                    87720  12 snd_ice1712,snd_ac97_codec,snd_hdspm,snd_hwdep,snd_timer,snd_i2c,snd_pcm,snd_rawmidi,snd_ak4xxx_adda,snd_mpu401_uart,snd_seq_device,snd_cs8427
[rocketmouse at archlinux ~]$ 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'

After connecting USB devices:
[rocketmouse at archlinux ~]$ lsmod | grep midi
snd_usbmidi_lib        30258  1 snd_usb_audio
snd_seq_midi           13564  0 
snd_seq_midi_event     14935  1 snd_seq_midi
snd_seq                71606  3 snd_seq_midi_event,snd_seq_dummy,snd_seq_midi
snd_rawmidi            30863  4 snd_hdspm,snd_usbmidi_lib,snd_mpu401_uart,snd_seq_midi
snd_seq_device         14497  4 snd_seq,snd_rawmidi,snd_seq_dummy,snd_seq_midi
snd                    87720  15 snd_ice1712,snd_usb_audio,snd_ac97_codec,snd_hdspm,snd_hwdep,snd_timer,snd_i2c,snd_pcm,snd_seq,snd_rawmidi,snd_usbmidi_lib,snd_ak4xxx_adda,snd_mpu401_uart,snd_seq_device,snd_cs8427
usbcore               243361  9 uas,snd_usb_audio,usb_storage,ohci_hcd,ohci_pci,snd_usbmidi_lib,ehci_hcd,ehci_pci,usbhid
[rocketmouse at archlinux ~]$ 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'
client 28: 'USB Device 0x170b:0x11' [type=kernel]
    0 'USB Device 0x170b:0x11 MIDI 1'
client 32: 'nanoKONTROL' [type=kernel]
    0 'nanoKONTROL MIDI 1'