[LAU] Midi controller keeps disconnecting

[Clemens Ladisch]

JonnyB wrote:
> it keeps disconnecting/reconnecting. The syslog keeps cycling like
> this (about twice a second):
>
> Jul  2 03:22:03 pc kernel: [13863.876029] usb 6-1: new full-speed USB device number 102 using uhci_hcd
> [...]
> Jul  2 03:22:03 pc kernel: [13864.288055] usb 6-1: USB disconnect, device number 102

"USB disconnect" typically is a hardware problem (controller/cable/
power), but in this case, this sounds like a power management bug in
the device's firmware.

Many MIDI devices have similar bugs, so automatic PM was disabled ...

> My OS is a Linux pc 3.2.0-45-generic-pae #70-Ubuntu

... in version 3.2.0-47.


Regards,
Clemens