frequent reconnects of an usb mouse

[Bernd Ernesti <netbsd%lists.veego.de@localhost>]

Hi,

I have the following keyboard / mouse combination:

uhidev0 at uhub0 port 3 configuration 1 interface 0
uhidev0: Microsoft Wired Keyboard 400, rev 1.10/1.10, addr 2, iclass 3/1
ukbd0 at uhidev0
uhidev1 at uhub1 port 1 configuration 1 interface 0
uhidev1: Microsoft Microsoft Basic Optical Mouse, rev 1.10/1.04, addr 2, iclass 
3/1
ums0 at uhidev1: 3 buttons and Z dir.
wsmouse0 at ums0 mux 0
wskbd0 at ukbd0: console keyboard, using wsdisplay0

But every minute (+ 2-3 seconds) the mouse detaches and immediately reattaches:

 uhidev1: at uhub1 port 1 (addr 2) disconnected
 wsmouse0: detached
 ums0: detached
 uhidev1: detached
 uhidev1 at uhub1 port 1 configuration 1 interface 0
 
 uhidev1: Microsoft Microsoft Basic Optical Mouse, rev 1.10/1.04, addr 2, 
iclass 3/1
 ums0 at uhidev1: 3 buttons and Z dir.
 wsmouse0 at ums0 mux 0

This is an AMD 780G board:

ohci1 at pci0 dev 18 function 1: vendor 0x1002 product 0x4398 (rev. 0x00)
ohci1: interrupting at ioapic0 pin 16
ohci1: OHCI version 1.0, legacy support
usb1 at ohci1: USB revision 1.0
ehci0 at pci0 dev 18 function 2: vendor 0x1002 product 0x4396 (rev. 0x00)
ehci0: applying AMD SB600/SB700 USB freeze workaround
ehci0: interrupting at ioapic0 pin 17
ehci0: dropped intr workaround enabled
ehci0: EHCI version 1.0
ehci0: companion controllers, 3 ports each: ohci0 ohci1
[..]
uhub1 at usb1: vendor 0x1002 OHCI root hub, class 9/0, rev 1.00/1.00, addr 1
uhub1: 3 ports with 3 removable, self powered

This is not happening if I use a different usb mouse.

Bernd

P.S. I get this message in single user mode too.