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    SubjectRe: Real-Time Preemption -RT-V0.7.51-17 - Keyboard Problems
    Dave Neuer wrote:
    > On 7/8/05, Ingo Molnar <mingo@elte.hu> wrote:
    >
    >>* K.R. Foley <kr@cybsft.com> wrote:
    >>
    >>
    >>>Ingo,
    >>>
    >>>I have an issue with keys VERY SPORADICALLY repeating, SOMETIMES, when
    >>>running the RT patches.
    >
    >
    > <snip>
    >
    >>>2.6.12 doesn't seem to have the
    >>>problem at all, only when running the RT patches. It SEEMS to have
    >>>gotten worse lately.
    >
    >
    > <snip>
    >
    >>>Adjusting the delay in the keyboard repeat seems to help. Any ideas?
    >>
    >>hm. Would be nice to somehow find a condition that triggers it.
    >
    >
    > FWIW, I've had this problem from time to time on my Compaq Presario
    > x1010us laptop (which also uses the ICH-4 chipset) with several kernel
    > versions between 2.6.7 and 2.6.12, and I have _not_ been running the
    > RT patches (though I plan to start soon).
    >
    > It seems to only happen when the laptop has been running for a while.
    > Also, X has been running each time. When it occurs, the stuck key
    > events follow the mouse focus from window to window, and in the few
    > cases where I'm able to either switch out of X to a different VT or
    > kill X, the keyboard is still "wedged" -- if I recall correctly,
    > switching VTs results in no keyboard events reaching that VT (as if X
    > is still consuming them). Can't remember what happens when I've
    > successfully killed X.

    I have seen this happen once or twice, but this behaves more like the
    keyboard really is stuck. The situation I am having is very brief
    repeats of a key rather than just sticking forever. FWIW, when I have
    seen the above situation it behaved just as you described with the stuck
    key following the focus.

    >
    > Again, happens uncommonly enough that I haven't put much effort into
    > debugging it.
    >
    > Anyway, unless it's a similar but unlrelated bug, it's not _caused_ by RT.
    >
    > Dave
    >


    --
    kr
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