MPU-401 device not found or device busy

Support Debian
#1

Bonjour,

Je suis sous Debian Jessie.

Au démarrage j’ai l’erreur suivante :

L’erreur n’est pas bloquante mais rallonge la durée du démarrage.

#2

Quelle est la carte son ?
$ lspci -v

Quels modules sont chargés ?
$ lsmod

Voir options du noyau se rapportant à MPU401.

noyau compilé avec options personnalisées,sans OSS.
CONFIG_SND_MPU401_UART=m

CONFIG_SND_MPU401 is not set

Noyau générique de debian provenant des dépôts jessie, deux modules (m).
CONFIG_SND_MPU401_UART=m
CONFIG_SND_MPU401=m

OSS

[code]config SOUND_MPU401
tristate “MPU-401 support (NOT for SB16)”
—help—
Be careful with this question. The MPU401 interface is supported by
all sound cards. However, some natively supported cards have their
own driver for MPU401. Enabling this MPU401 option with these cards
will cause a conflict. Also, enabling MPU401 on a system that
doesn’t really have a MPU401 could cause some trouble. If your card
was in the list of supported cards, look at the card specific
instructions in the <file:Documentation/sound/oss/README.OSS> file. It
is safe to answer Y if you have a true MPU401 MIDI interface card.

  If you compile the driver into the kernel, you have to add
  "mpu401=<io>,<irq>" to the kernel command line.[/code]

ALSA

[code] config SND_MPU401
tristate "Generic MPU-401 UART driver"
select SND_MPU401_UART
help
Say Y here to include support for MIDI ports compatible with
the Roland MPU-401 interface in UART mode.

  To compile this driver as a module, choose M here: the module
  will be called snd-mpu401.[/code]
#3

$ lspci -v |grep -i audio

Résultat de lsmod

J’utilise le kernel générique 3.14-1-amd64 disponible sous Jessie :

$ grep MPU401 /boot/config-`uname -r` CONFIG_SND_MPU401_UART=m CONFIG_SND_MPU401=m

#4

lsmod atteste que le module snd_mpu401_uart se charge.
À tester, placer le module en liste noire pour empêcher son chargement lors du démarrage.

Modèle, /etc/modprobe.d/mpu401-blacklist.conf