usb device problem

[Giuseppe Pagnoni]

Dear list

I am running 4.8stable and  I have a problem with a USB disk on key.  
When I insert it into one of the USB ports, I get the error message:

uhub0: device problem, disabling port 1

In the kernel, both da and umass are enabled.

Any suggestion?

 thanks

-- 
------------------------
Giuseppe Pagnoni, Ph.D.
Dept. of Psychiatry and Behavioral Sciences
1639 Pierce Drive, Suite 4000
WMB Bldg., Atlanta, GA 30322, U.S.
phone: 404-712-8431
fax: 404-727-3233
e-mail: gpagnon at emory.edu