From owner-freebsd-hackers Thu Jan 11 12:12:34 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id MAA16151 for hackers-outgoing; Thu, 11 Jan 1996 12:12:34 -0800 (PST) Received: from linux4nn.gn.iaf.nl (root@linux4nn.gn.iaf.nl [193.67.144.34]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id MAA16139 for ; Thu, 11 Jan 1996 12:12:27 -0800 (PST) Received: from uni4nn.iaf.nl (root@uni4nn.iaf.nl [193.67.144.33]) by linux4nn.gn.iaf.nl (8.6.9/8.6.9) with SMTP id VAA01959 for ; Thu, 11 Jan 1996 21:12:38 +0100 Received: by uni4nn.iaf.nl with UUCP id AA18047 (5.67b/IDA-1.5 for FreeBSD-hackers@freebsd.org); Thu, 11 Jan 1996 21:12:20 +0100 Received: by iafnl.es.iaf.nl with UUCP id AA26176 (5.65c/IDA-1.4.4); Thu, 11 Jan 1996 20:44:13 +0100 Received: (from wilko@localhost) by yedi.iaf.nl (8.6.11/8.6.6) id UAA01584 for FreeBSD-hackers@freebsd.org; Thu, 11 Jan 1996 20:40:52 +0100 From: Wilko Bulte Message-Id: <199601111940.UAA01584@yedi.iaf.nl> Subject: sio overruns on 205R revisited To: FreeBSD-hackers@freebsd.org (FreeBSD hackers list) Date: Thu, 11 Jan 1996 20:40:52 +0100 (MET) X-Mailer: ELM [version 2.4 PL23] Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-hackers@freebsd.org Precedence: bulk Hi there Some time ago I mentioned that I was getting sio overruns on my new P55TP4XE /90. That was using the onboard serial ports. In the mean time I also tried it using the AST/4 with 16550 I was using successfully with my old 486/25. Evidence has shown that there is no difference, still overruns. After quite some experimenting I noticed that the sio errors can be reproduced quite easily by putting 'load' on the X display. So, an xterm with ls -lR / is a sure case of (lots of) sio overflow errors. When I repeat the same ls -lR / on a normal text vt iso the X display no problems occur. My conclusion: something in the S3/928 PCI VGA card makes trouble. As another datapoint: when the option nomemaccess is NOT in XF86config then I get a garbled X display. Meaning: random pixels in the wrong color, can be 'wiped' in the correct color by moving a window over 'm. Really strange. I appreciate input on this, maybe I'm missing something?? Wilko _ __________________________________________________________________________ | / o / / _ Wilko Bulte email: wilko@yedi.iaf.nl |/|/ / / /( (_) Private FreeBSD site - Arnhem - The Netherlands --------------------------------------------------------------------------------