ukbd: short freeze when activating LEDs

Hans Petter Selasky hselasky at
Sat Sep 5 16:02:15 UTC 2009

On Saturday 05 September 2009 16:32:55 Stefan Ehmann wrote:
> Whenever I press capslock/numlock, the system shortly (< 0.5 ms) freezes.

How did you measure this?

Are you able to figure out why it is hanging?

Has this got anything to do with BIOS or microcode running on the CPU?

USB keyboard LEDs are set asynchronously. It should not block like you 


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