Jukka Marin wrote...
> Got lots of these on the console:
> 
> ahc0: target 1 synchronous at 10.0MHz, offset = 0xf
> 
> Every now and then, there scrolled a message like this:
> 
> ahc0: target 2 synchronous at 10.0MHz, offset = 0xf
> sd1(ahc0:1:0): timed out in message out phase, SCSISIGI == 0xb6
> ahc0: Issued Channel A Bus Reset #1. 8 SCBs aborted
> ahc0: target 1 synchronous at 10.0MHz, offset = 0xf
> 
> Or like this:
> 
> ahc0: target 1 synchronous at 10.0MHz, offset = 0xf
> sd0(ahc0:0:0): timed out in message out phase, SCSISIGI == 0xe6
> sd1(ahc0:1:0): asserted ATN - device reset in message buffer
> 
> This kept going all the time and the system was unusable.  This started
> while the machine was running (not during reboot).
> 
> Here's the ahc related dmesg output:

[ ... ]

> We see the same problem on several machines every now and then, so I think
> it's not a hardware problem.  Any ideas?

The "timed out in message out phase" messages often indicate a termination
or cabling problem.  i.e, it could be a hardware problem.

Ken
-- 
Kenneth Merry
ken@kdm.org