Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ncis.llnl.gov!ncis!helios.ee.lbl.gov!pasteur!ucbvax!bloom-beacon!husc6!rice!sun-spots-request
From: capmkt!brent@uunet.uu.net (Brent Chapman)
Newsgroups: comp.sys.sun
Subject: Re: tty console locking up on Sun-4's
Message-ID: <8901161722.AA07638@mycroft.capmkt.com>
Date: 19 Jan 89 14:01:27 GMT
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Organization: MIT Media Lab, Cambridge MA
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Approved: Sun-Spots@rice.edu
Original-Date: Mon, 16 Jan 89 09:22:11 PST
X-Sun-Spots-Digest: Volume 7, Issue 113, message 9 of 11

> Have those of you who do *not* use bitmapped displays on your Sun-4's
> noticed any peciliarities regarding the console locking up?...

Under 3.X running on systems without bitmapped consoles (in other words,
with a terminal on ttya or ttyb as the console), there were bugs that
would cause the console to hang if /dev/fb, /dev/kbd, and /dev/mouse
existed.  These three devices refer to a bitmapped console, and are not
necessary on systems without a bitmapped console.  The fix to stop things
from hanging occasionally was simply to delete these three devices.  Those
same bugs might still exist under 4.0; I would try deleting the three
devices, and see if the problem goes away.

-Brent
--
Brent Chapman					Capital Market Technology, Inc.
Computer Operations Manager			1995 University Ave., Suite 390
brent@capmkt.com				Berkeley, CA  94704
{cogsci,lll-tis,uunet}!capmkt!brent		Phone:  415/540-6400

[[ Our 3/280 is running 4.0.1 with a terminal for a console, no monitor,
and /dev/fb, /dev/kbd, and /dev/mouse all exist.  I haven't heard of any
problems with the console locking up.  --wnl ]]