From owner-freebsd-hackers Thu Jan 4 17:55:47 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id RAA13908 for hackers-outgoing; Thu, 4 Jan 1996 17:55:47 -0800 (PST) Received: from localhost.cdrom.com (localhost.cdrom.com [127.0.0.1]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id RAA13896 Thu, 4 Jan 1996 17:55:43 -0800 (PST) Message-Id: <199601050155.RAA13896@freefall.freebsd.org> X-Authentication-Warning: freefall.freebsd.org: Host localhost.cdrom.com [127.0.0.1] didn't use HELO protocol To: "Jordan K. Hubbard" cc: Ben Jackson , "Amancio Hasty Jr." , hackers@FreeBSD.ORG Subject: Re: buggy 2940 driver? In-reply-to: Your message of "Thu, 04 Jan 1996 17:23:57 PST." <2076.820805037@time.cdrom.com> Date: Thu, 04 Jan 1996 17:55:43 -0800 From: "Justin T. Gibbs" Sender: owner-hackers@FreeBSD.ORG Precedence: bulk >> I have a 2940 connected to (among other things) a QUPD1800S. During >> extended periods of heavy read activity (ie backups) the device and/or >> card will eventually hang, leaving the machine hung (there's a swap >> partition on that disk). The tape drive is on another SCSI controller, > >Is this one of the older 2940s? Do you have transfers set to 10Mb/sec >in the SCSI device configuration setup for the PD1800 drive? > >I've been told that the older controllers actually run *faster* than >the specified clock rate at the `top end' in order to work around a >race condition that they later fixed. Most drives don't mind the >overclocking, but some Quantums apparently have conniptions. You >might try fiddling with the transfer speed! > > Jordan This only affected the 1080S as far as I know. -- Justin T. Gibbs =========================================== FreeBSD: Turning PCs into workstations ===========================================