[Nut-upsuser] NOTIFYCMD and SHUTDOWNCMD do not work until Nut is restarted

[Julien Métairie]

Hi everybody,

I installed and configured Nut 2.4.3 on Debian Squeeze, using package. 
It monitors an MGE Pulsar 1500 UPS in standalone mode.

Here are parts of upsmon.conf :
SHUTDOWNCMD "/bin/bash /root/extinction.sh >> /var/log/ups/ups.log 2>>&1"
NOTIFYCMD "/bin/bash /usr/sbin/alerte.sh"
[...]
NOTIFYFLAG ONBATT	SYSLOG+EXEC

At startup, driver, upsd and upsmon start but when I pull off the line, 
a message is appended to syslog but no script is executed, nor 
SHUTDOWNCMD is called. To make things better, I must restart Nut :
invoke-rc.d nut restart

Trying to understand this behavior, i noticed the following lines in 
syslog at computer startup, pasted there[1] for convenience :

usb 3-1: New USB device found, idVendor=0463, idProduct=ffff
usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=4
usb 3-1: Product: Pulsar
usb 3-1: Manufacturer: MGE UPS SYSTEMS
usb 3-1: SerialNumber: 1Y3H34201
usb 3-1: configuration #1 chosen from 1 choice
[...]
/build/buildd-linux-2.6_2.6.32-48squeeze1-i386-F95osd/linux-2.6-2.6.32/debian/build/source_i386_none/drivers/hid/usbhid/hid-core.c: 
usb_submit_urb(ctrl) failed
generic-usb 0003:0463:FFFF.0001: timeout initializing reports
generic-usb 0003:0463:FFFF.0001: hiddev0,hidraw0: USB HID v1.10 Device 
[MGE UPS SYSTEMS Pulsar] on usb-0000:00:0a.1-1/input0
usbcore: registered new interface driver usbhid
usbhid: v2.6:USB HID core driver

May the failure be linked to my issue ? What can I do to make Nut work 
as soon as my computer boots up ?

Thanks
Julien

[1] 
http://paste.leslamas.net/?4cde069bbd2be749#aEElgbt8heLLpZlC2R8GbVzJ711cBKmaQiJZP+0nyLw=