wireless USB keyboard issues

[Xavier na <raspberrynetbsd%gmail.com@localhost>]

Hi ,

I have plugged various USB wireless keyboards to:

   port 2 addr 5: full speed, power 98 mA, config 1, USB Receiver(0xc534), Logit
ech(0x046d), rev 29.00
     uhidev0
     uhidev1
   port 3 addr 6: full speed, power 98 mA, config 1, USB Receiver(0xc52e), Logit
ech(0x046d), rev 23.01
     uhidev2
     uhidev3
# uname -a
NetBSD armv7 7.0 NetBSD 7.0 (RPI2.201509250726Z) evbarm

When I type characters in keyboards, in times it writing to
NetBSD/RPI2 and in times not.

Any idea about this issue ?