Dell poweredge 850 hangs on shutdown -p

[George Hartzell]

Doug Barton writes:
 > George Hartzell wrote:
 > > Kirk Davis writes:
 > >  >  
 > >  > 
 > >  > > -----Original Message-----
 > >  > > From: owner-freebsd-stable at freebsd.org 
 > >  > > 
 > >  > > I have a Dell PowerEdge 850 that hangs when I try to power it down
 > >  > > using "shutdown -p now".  Otherwise it seems to run splendidly.
 > 
 > What happens if you do 'acpiconf -s5' ?

It seems that it's non-deterministic, and that shutdown -p sometimes
works too.

Here's what I did.

1) Log in, su to root, acpiconf -s5 and it shut down cleanly.
2) Log in, su to root, acpiconf -s5 and it shut down cleanly. (just checking)
3) Log in, su to root, shutdown -p and it shut down cleanly.
4) Log in, su to root, 
    ifconfig bgp0 inet 10.8.0.2 up
    ssh otherhost "dd if=/dev/urandom bs=1M" | dd of=/dev/null bs=1M
    kill it after a couple of moments
    dd if=/dev/ad4 of=/dev/null count=10000
   acpiconf -s5
   hung
5) Log in, su to root, 
    dd if=/dev/ad4 of=/dev/null count=10000
   acpiconf -s5
   worked
6) Log in, su to root, 
    ifconfig bgp0 inet 10.8.0.2 up
    ssh otherhost "dd if=/dev/urandom bs=1M" | dd of=/dev/null bs=1M
    kill it after a couple of moments
   acpiconf -s5
   worked

sigh.

Anything else I can try to generate leads?

Thanks!

g.