Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!omen!caf From: caf@omen.UUCP (Chuck Forsberg) Newsgroups: comp.unix.xenix Subject: Re: Help! Mysterious System Lock-Up (SCSI) Problem Message-ID: <829@omen.UUCP> Date: 26 Sep 89 19:22:03 GMT References: <131@ubbs-nh.MV.COM> Reply-To: caf@omen.UUCP (Chuck Forsberg) Organization: Omen Technology Inc, Portland Oregon Lines: 22 In article <131@ubbs-nh.MV.COM> noel@ubbs-nh.MV.COM (N. Del More) writes: :The symptoms are a sudden lock-up of the system with the LED on the :Adaptec and Drive remaining on. I've reformatted and verified the drive :three or four times using the Adaptec's ROM based format routine and no :errors have been reported. After a reboot, fsck reports no errors except :those which would be normal after a system crash. I've seen something vaguely similar. I'm running 3.2, also with an Apadtec 1540 running the secondary disk. About twice in the last month or so the Adaptec became wedged, with the activity light on the Wren V on steady. The rest of the system appeared to run normally (activity on the main (ESDI) disk, etc.). I did not see this problem until I made the SCSI drive secondary. The first 6 months I used the Wren as the only drive, and shall revert to that configuration as soon as the 3.x dev sys can compile all my products. I have a suspicion the problem is related to heat buildup on the controller board(s). I haven't had a wedge since I stopped laying papers/manuals on top of the i/o boards.