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From: cgd@eden.CS.Berkeley.EDU (Chris G. Demetriou)
Newsgroups: comp.unix.bsd
Subject: [386BSD] X386: it's doing lines!
Date: 2 Nov 92 21:01:33
Organization: Kernel Hackers 'r' Us
Lines: 37
Distribution: world
Message-ID: <CGD.92Nov2210133@eden.CS.Berkeley.EDU>
NNTP-Posting-Host: eden.cs.berkeley.edu

fun problem with X386 -- i think this might be some sort of bug
in either X386 (latest version off of agate 8-), or Julian's
SCSI drivers:

System:
	486-50 EISA
	Orchid PDIIs
	Adaptec 1742 SCSI Host Adaptor
	patched w/Terry's patch kit.

The symptoms:

The X server occasionally goes nuts.
as in: vertical line every 8 pixels,
       quasi-random patterns moving up/down/left/right
	(i say quasi-random, because they've all got the line motif...
	usually  bits of lines, in the cases where things move, tho...)
       X and/or the video board gets confused about how much ram the
	videw board has.  (it has 1M, but after these
	incidents, sometimes X only recognizes 512K.  when this happens,
	system must be *power cycled* to get it working again.)

the reason that i think it might be related to the SCSI driver is that
it happens more often under heavy disk usage...

really odd: it sometimes *fixes itself*...

somebody help me...  this is driving me nutz!

thanks,

Chris
--
Chris G. Demetriou                                    cgd@cs.berkeley.edu

"Sometimes it is better to have twenty million instructions by
        Friday than twenty million instructions per second." -- Wes Clark