Subject: Re: kern/11321: siop appears to hang my machine
To: None <>
From: Manuel Bouyer <>
List: netbsd-bugs
Date: 10/27/2000 20:52:52
On Fri, Oct 27, 2000 at 09:00:58AM -0600, wrote:
> >Description:
> Under certain circumstances, such as accessing ch0 while using X, my
> machine locks up hard.  I haven't been able to get any response at all
> while it's in that state.
> Possibly this is some interaction between siop in
> connected/disconnected mode and X masking interrupts?  Does X even
> mask interrupts?

X should'nt mask interrupts. The video board can interract with the PCI
bus, though.
Maybe it's also related to disk transfers. Could you try to start a chio
and generate disk activity at the same time ? (a tar cvf or something
like this). If it hangs, could you try to see if you can enter ddb
(ctrl-alt-esc on the first virtual console) ?

Manuel Bouyer, LIP6, Universite Paris VI.