Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site sdcc3.UUCP Path: utzoo!watmath!clyde!burl!ulysses!allegra!mit-eddie!genrad!decvax!ittvax!dcdwest!sdcsvax!sdcc3!brian From: brian@sdcc3.UUCP (Brian Kantor) Newsgroups: net.periphs,net.unix-wizards Subject: Re: Eagle hang Message-ID: <2502@sdcc3.UUCP> Date: Wed, 28-Nov-84 10:53:55 EST Article-I.D.: sdcc3.2502 Posted: Wed Nov 28 10:53:55 1984 Date-Received: Fri, 30-Nov-84 06:59:17 EST References: <4681@utzoo.UUCP> Organization: UCSD wombat breeding society Lines: 27 Xref: genrad net.periphs:601 net.unix-wizards:10927 > We had an odd bit of misbehavior from one of our Eagles today: it hung, > with the READY light off, not doing anything. Furthermore, when we tried > shutting it down, it wouldn't response to the front-panel switch! Flipping > the START switch off did nothing; the START light stayed on, and there was > no sound of the disk shutting down. We finally pulled the circuit breaker > for a moment. On powering it back up, it seems fine. Does anybody know > what gives? > Henry Spencer @ U of Toronto Zoology I've had the eagle on our sun network do that a couple of times - each time I had to power the system down (both the drive and the cpu). I think its due to random signals on the control lines as both the drive and controller powered up - I have never had it occur if either was already on. Toggling the circuit breaker (main power) on the eagle always fixes the problem. I imagine a power surge (especially if the grounding between your eagle and cpu isn't real great, or if you are running the cpu off isolated power and not running the eagle on the same supply) could cause the same effect. Could that have been it? Lightning striking nearby? Brian Kantor UC San Diego decvax\ brian@ucsd.arpa akgua >--- sdcsvax --- brian ucbvax/ Kantor@Nosc