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SubjectRe: kill -9 <pid of X>
On Wed, 12 Aug 1998, Jon Hamilton wrote:

>
> In message <Pine.HPP.3.91.980811182240.22974A-100000@gaia.ecs.csus.edu>, "Jon M
> . Taylor" wrote:
> } On Tue, 11 Aug 1998, Kragen wrote:
> }
> } > On Tue, 11 Aug 1998, Albert D. Cahalan wrote:
> } > > Kragen writes:
> } > > > On Tue, 11 Aug 1998, Tigran Aivazian wrote:
> } > > >> Yes, it *is* very much a kernel issue. What happens if you
> } > > >> kill -9 the X server? The machine hangs because the kernel
> } > > >
> } > > > (It would be nice if someone had already written a small wrapper for X
> } > > > that would sanify the console when X crashes, as Linus suggested. Has
> } > > > someone? My X crashes every few months.)
> } > >
> } > > That was beat to death too: you can't do it. If you'd like to try,
> } > > I have a "nice" Cirrus Logic clgd5430 card you can try to restore.
> } > > . . . I can even
> } > > hit the reset button and boot into an OS with official drivers,
> } > > but it doesn't do any good. Only the big red switch works.
> } >
> } > Does that mean X can't restore it either, if it exits properly?
> }
> } 'Properly' is the keyword here. It cannot exit properly if it is
> } killed by a signal.
>
> Why on earth not? The X server can catch any signal other than 9.

Certainly it can catch signal 9. It just cannot properly clean
up the hardware state in the signal handler.

Jon

---
'Cloning and the reprogramming of DNA is the first serious step in
becoming one with God.'
- Scientist G. Richard Seed


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