http://bugzilla.kernel.org/show_bug.cgi?id=9147





------- Comment #82 from [EMAIL PROTECTED]  2008-07-22 13:02 -------
Hello, 

I saw something interesting a few days ago:
I updated the bios of my msi l745 laptop to the latest version. 
After reboot, the "unknown key released" messages were not triggered anymore.
However unplugging the AC adapter made them come back. 

Also one more thing: I tried to dump the content of the EC_SC (Embedded
Controller Status) register some times ago to understand the "EC GPE Storm"
issue, and I saw that the flag SMI_EVT was set from time to time.
Moreover I read in a document from Phoenix that the keyboard controller may be
involved to manage SMIs in Legacy more.

So... one more wild guess: the EC is (wrongly) triggering SMIs to notify the
state of the AC power and some SMI related data are made available on the
keyboard controller ports, confusing the kernel.

Unfortunately I have not been able to find the model/datasheets of my EC.
lm_sensors says
  Trying family `National Semiconductor'...                   Yes
  Found unknown chip with ID 0xa300
But I'm not even sure that this information is reliable...
(and at the moment I haven't found any datasheet that is matching the content
of the registers specified in the DSDT).

I also tried to dump the registers of the EC using the acer_ec.pl tool and
force the state of some registers, but without any success.


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