Re: APM suspend
> On Wed, 29 Mar 2000, Peter Gruber wrote:
> >
> > everytime my Laptop wake up after a suspend, I get then following kernel
> > message
> >
> > kernel: bug: kernel timer added twice at c21c78b0.
> >
> > is this bad ? what should I do about it ?
Apparently nothing; I see it a lot.
I'm sure one of the kernel guys will get to it eventually. Side Bet:
later than patchlevel 3 in the new stable kernel. It isn't crashing people,
it's only moderately reproducible, and big sites aren't screaming for its
repair or repeal.
> I quite often get this but only after a hibinate. No clue why it happens,
> but it doesn't seem to affect anything so I......ignore it :)
>
> Besides linux is not really ment to hibinate proberly (I think) according
> to the documentation,
Linux wasn't born thinking it was going to be interrupted midsentence all
the time. I keep thinking maybe one of the alternate schedulers might
behave better (or worse) in this regard.
But it also seems to relate partly to the BIOS. On the Magio, I was
fairly safe even when I wasn't on an APM kernel. A newer, tighter kernel
than the other distro's I'd been using before debian, but still, when I
hibernated without thinking, I -expected- it to crash, and it mostly
didn't. Disgusted all my friends. I told 'em switch to debian.
And of course I compiled a fresh kernel. No sense asking for fsck all
the time.
> however apart from this error occasionly occuring on
> my laptop everythings happy, except were the CPU runs occasionly as only a
> fraction of the speed (probably CPU idle calls be called lots) which is
> solved by another hibinate and wake.
On other systems things have been more what I expected, and along the lines
of what you describe; very rarely, a text character eaten, a timing hiccup
makes things slow - suspend again and it's fine - without kernel APM support,
about a one in 5 chance that the scheduler will "lose the lottery" and hang
and/or barf... with a greater than 50% chance that you still only get 3 or 4
minutes to live, because the app that lost the lottery is now following
orders from The Glitch. "relent, repent, and reboot"
-* Heather * star@starshine.org *-
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