Thank you for your answers !
Are you using a USB isolator? or a USB hub?
Do you have anything else plugged into USB?
What kind of machine is running your OS?
I am using a hub vint 6 :https://www.gotronic.fr/art-module-hub- ... -27027.htm
I have others stuff plugged and @ startup there are no issues with them.
Thas why i think its a problem due to the phidget module.
I am running Ubuntu 16.04.
Do you see any USB related errors in the system log?
No in dmesg, i dont have any issue.
like if power was not arrinving to the module.
but the other ones (not phidget modules) i have are powered so thats strange.
Also, what kind of motherboard do you have? Certain Asus chipsets have known issues with booting up with USB devices attached.
yes its asus z720 or something like that.
but why other modules are ok ?