USB2 - keyboard error

[Yoshihiro Ota]

I just installed 8-CURRENT with USB2 kernel config to join the test.

I use a laptop PC and sometime use USB keyboard.
It was detected as following and it is usable when
I see FreeBSD login prompt.

ugen0.2: <NEC> at usbus0
ushub2: <NEC hub, class 9/0, rev 1.00/1.00, addr 2> on usbus0
ushub2: 4 ports with 4 removable, bus powered
ugen0.3: <Alps Electric> at usbus0
ukbd0: <Alps Electric M2452, class 0/0, rev 1.00/1.01, addr 3> on usbus0
kbd2 at ukbd0
ukbd_set_leds_callback:556: error=USB_ERR_IOERROR
ukbd_set_leds_callback:556: error=USB_ERR_IOERROR


Regular alphabet keys work fine but as soon as I hit Alt-F2 to switch
to another virtual console (or is it called virtual terminal?), I
start seeing the above error.  Then, keyboard stops responding or
starts repeating some irregular keys.

This is without X.

How do we begin fixing this issue?

Thanks,
Hiro