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SubjectRe: Mouse interrupts: the death knell of a VP6
Hello!

On Wed, Apr 10, 2002 at 11:43:13AM -0500, Brent Cook wrote:

> > > I have already tried removing memory, adding memory, changing processors,
> > > video cards. The only thing that has remained constant is the VP6
> > > motherboard and the hard drive.
> > My VP6 died on me recently with some funny symptoms:
> > it hangs in X when I start netscape and move mouse, or if I do
> > bk clone on kernel tree, it dies with
> > kernel BUG at /usr/src/linux-2.4.18/include/asm/smplock.h:62!
> Very interesting. I could do the same thing, and have a similar lock with
> a PS/2 mouse. I will start looking in smplock.h if the MPS change does not
> help.

No need to look there.
If you see sch a BUG message in your logs, you seems to have bad hardware.

> > BUG in various places pretty soon.
> > (this BUG is only appears if 2 CPUs are present in motherboard).
> > So if your troubles began only recently, you might want to try another
> > motherboard just to be sure.
> I received the motherboard used, so I do not know if this is a recent
> development. I have tried several other kernels which all show the same
> locking behavior with PS/2 mice (2.4.17, 2.4.18, 2.5.7-dj3.) The previous
> owner ran Windows XP (developer preview) on the board, and it had a
> tendency to lock often, especially under high IO. I attributed this to
> software issues, though now I wonder why the previous owner _really_ gave
> it to me!

Yeah, Windows crashed on me too (win2k, though) when I tried.
Luckily I bought my as a new one 11 months ago and I still have 1 month of
warranty, and the good thing is my board will be replaced tomorrow ;)

> I have used a Tyan Tiger 100 with two processors and an Intel BX chipset,
> with great success and no similar locks, so I am 50% certain that a
> hardware difference is the root cause of the problem. Hopefully, someone
> else will have seen similar problems.

Who knows. May be people in question silently replaced damaged harware with
good one and forgot about it already ;)
Or may be they ustill use windows and blame Microsoft on all the crashes ;)

Bye,
Oleg
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