ukbd: short freeze when activating LEDs

Bruce Cran bruce at cran.org.uk
Sat Sep 5 19:06:47 UTC 2009


On Sat, 5 Sep 2009 20:29:29 +0200
Ed Schouten <ed at 80386.nl> wrote:

> * Hans Petter Selasky <hselasky at c2i.net> wrote:
> > On Saturday 05 September 2009 16:32:55 Stefan Ehmann wrote:
> > > Whenever I press capslock/numlock, the system shortly (< 0.5 ms)
> > > freezes.
> > 
> > It might also be because the USB keyboard driver is using Giant,
> > which can be congested.
> 
> For half a second? I experience the same issue. I also have the same
> issue with the Syscons VGA driver when switching windows. Some time
> ago I talked about this with some other people and it may be possible
> it has something to do with SMIs. Not sure...
> 

Half a millisecond or, as reported in another message, 100us :)
I suspect the OP probably did mean 0.5s, a pause which someone can both
see and hear.

-- 
Bruce Cran


More information about the freebsd-current mailing list