Re: strange keyboard lag after suspend testing

["Dmitry Torokhov" <dmitry.torokhov@gmail.com>]

On 3/20/07, Pavel Machek <pavel@ucw.cz> wrote:
> Hi!
>
> > > I was testing suspend in 2.6.21-rc4 a lot, and now... machine feels
> > > like someone added 50..100msec delay somewhere in keyboard
> > > handling. Mouse does not seem affected. /proc/interrupts seem to
> > > increase as they should, for both keyboard and mouse. Can someone
> > > reproduce it? Any ideas how to debug it?
> >
> > Probably just asking the obvious:
> > it's not a trivial "failed to re-configure repeat rate upon resume"
> > (which one could rule out by running "kbdrate" again)
> > but a lag in some interrupt handler or somewhere else deeper, right?
>
> No, it is not keyboard rate. Keyboard lags during normal typing,
> sometimes letters come in groups of two or so...

I might start looking at embedded controller changes and switches. If
ACPI misbehaves that could starve keyboard controller... But you said
that mouse is OK... Hmm, what happens if you load evbug and type while
watching syslog. Do you observe the same delays?

-- 
Dmitry