> > > Being able to shut down by hitting the power switch is a little luxury
> > > for which I've been willing to invest more than a year of my life to
> > > attain. Clueless newbies don't know why it should be any other way, and
> > > it's essential for embedded devices.
> > Clueless newbies (and slightly less clueless less newbie) type people
> > don't think that they should HAVE to. My two interests are coping with
> > particularly pedantic people who don't want there computer to hastle them
> > about what they should or shouldn't do, and slightly embedded systems
> > (e.g. set top box/web browsery thing that you want to be able to turn off
> > like a TV but it should still be able to have a writeable disc for config
> > and stuff you download/cache etc).
> Nothing wrong with a filesystem (or apps) that can handle being powered
> But I prefer to handle this kind of users with a power switch that
> acts as a "shutdown button" instead of actually killing power.
> The os will then run the equivalent of "shutdown -h now"
> You may not have this luxury on an ordinary pc, but you do if you design
> devices. You will then be free to use existing GPL software that
> not necessarily handle a power failure well.
Heck, I hate hardware like that. Power button should kill the power,
immediately. It should not sync, it should not tell system, it should
just cut off the power. There _might_ be other button telling system
Why is power button important? I already had 2 situations where
softpower could be pretty fatal, and one where it _was_ fatal.
1. on times of 486, badly inserted ISA card led to explosion of one of
low-integration chips. I've actually seen blue light. You can see
that soft-power-off is just not appropriate for such situation. [But I
probably could have survived soft-power off. Chip exploded and no more
damage seemed to happen.]
2. on the same 486, one wire got short-circuited. Smoke started
comming out of the box. By powering it down I even saved the wire (its
isolation started boiling).
3. few days ago, our hot-wave owen commited suicide. Device with soft
power controlled by CPU. During one night, CPU got crazy (power
glitch? EMI?) and heating turned on itself. Fan did not. Owen
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