Re: 2.6.28-rc4-mmotm1110 shift-lock oddness

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On Mon, 17 Nov 2008 16:56:55 -0500 Valdis.Kletnieks@xxxxxx wrote:

> Twice today, I've managed to get my laptop into an odd state where the keyboard
> got quite confused:
> 
> 1) For the characters [a-z] the shift bit was *inverted* - if the shift-lock
> LED was off, you'd get UPPER-case, and if it was on, you'd get lower-case.
> 
> 2) To add to the fun, the 0-9 keys were stuck shifted - I'd get the special
> characters no matter what setting the shift or shift-lock key had.  I suspect
> that the special-char keys like [{ and ;: were also stuck in shifted state,
> but can't totally confirm it.
> 
> The previous two issues combined meant that I wasn't able to su or login
> as root to do much of anything about it (guess who has special chars in their
> root password? ;)
> 
> 3) ctl-alt-Fn to switch virtual consoles was spotty/erratic - one time
> I was unable to use it at all, another time I was able to use c-a-F1 to get
> to a green-screen console, but then F2 to get another one or F7 to get
> back to the X server screen wouldn't work.
> 
> 4) Fortunately for my sanity, alt-sysrq was still working as advertised,
> so I was able to reboot and thus clear the problem.
> 
> I was thinking this might be a simple "missed a key press/released" event
> for a shift key, except that doesn't explain the numerics getting stuck shifted.
> 
> Any suggestions/hints for instrumentation/etc, in case I can replicate it
> again?

That's the first such report I've seen.  Let's add some cc's.
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