On 6/4/07, Henrique de Moraes Holschuh <[email protected]> wrote:
On Mon, 04 Jun 2007, Dmitry Torokhov wrote:
> >...but I'm not quite sure it is a buggy keyboard. It happens _way_ too
> >often. Launch the line above and try to do some typing...
>
> This used to work fine on my box last time I tried it (the switch
> itself is offloaded to a keventd and shoud not get in the way) but
> then they push all kind of ACPI/SMM crap together with KBC so who
> knows... I should try it again when I get home.
Err... in laptops, almost *always* the KDC is emulated by the embedded
controller, so I bet you're right on the money, there. It is not "a buggy
KDC", it is a buggy EC firmware and/or buggy SMBIOS which is a lot more
common.
And DoS'ing the EC is very high on the Don't Do That list on a laptop. If
the X60 is only losing keypresses and producing no bigger fireworks, that's
outstanding behavior (as far as I trust ThinkPad firmware, anyway).
So please throttle anything that might access the KDC way too much (as
compared to normal keyboard operation by an user).
What would be reasonable throttling? Once every 100 ms?
--
Dmitry
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