kern/43653: Keyboard lossy over Tangtop Generic USBPS2

[tmp+nb-spr%disfinite.org@localhost]

>Number:         43653
>Category:       kern
>Synopsis:       Keyboard connected over Tangtop USBPS2 loses approx. 20% of 
>keystrokes
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Jul 22 18:25:00 +0000 2010
>Originator:     T. M. Pederson
>Release:        NetBSD 5.99.35 2010-07-08
>Environment:
System: NetBSD nova 5.99.35 NetBSD 5.99.35 (GENERIC) #0: Fri Jul  9 01:57:14 
UTC 2010  
builds%b7.netbsd.org@localhost:/home/builds/ab/HEAD/sparc64/201007080000Z-obj/home/builds/ab/HEAD/src/sys/arch/sparc64/compile/GENERIC
 sparc64
Architecture: sparc64
Machine: sparc64
>Description:
        The built-in keyboard on a target laptop (Naturtech 888P) is connected
        over a Tangtop Generic USBPS2. In use, approximately 20% of keystrokes
        are lost. This loss occurs at random intervals.
>How-To-Repeat:
        Run NetBSD on system with the (built-in) keyboard connected over a
        Tangtop USBPS2.
>Fix:
        Workaround: Keyboards connected to the external USB ports work
        normally.