From owner-freebsd-current@freebsd.org Mon Dec 7 14:02:47 2015 Return-Path: Delivered-To: freebsd-current@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 0E09D9A08ED for ; Mon, 7 Dec 2015 14:02:47 +0000 (UTC) (envelope-from rmacklem@uoguelph.ca) Received: from esa-jnhn.mail.uoguelph.ca (esa-jnhn.mail.uoguelph.ca [131.104.91.44]) by mx1.freebsd.org (Postfix) with ESMTP id C3675102A for ; Mon, 7 Dec 2015 14:02:46 +0000 (UTC) (envelope-from rmacklem@uoguelph.ca) IronPort-PHdr: 9a23:szfbgRZe9p08DpxGsierCIT/LSx+4OfEezUN459isYplN5qZpcS6bnLW6fgltlLVR4KTs6sC0LqI9fi4EUU7or+/81k6OKRWUBEEjchE1ycBO+WiTXPBEfjxciYhF95DXlI2t1uyMExSBdqsLwaK+i760zceF13FOBZvIaytQ8iJ35rxj7j60qaQSjsLrQL1Wal1IhSyoFeZnegtqqwmFJwMzADUqGBDYeVcyDAgD1uSmxHh+pX4p8Y7oGx48sgs/M9YUKj8Y79wDfkBVGxnYCgJ45jFrxTOZzCjrlABSH8blAYAVwbf4RzwRZu0uTbgrOd7xAGUJ8D7R6s4HzO44PE4ZgXvjXI9NjU6uETegc90gacT9Aikrhd8x4PRSJySO+dzervdO9gTEzkSFv1NXjBMV9vvJ7AECPAMaKMB99Hw X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: A2DMAQBvkGVW/61jaINehQG9KgENgW6GDoF4FAEBAQEBAQEBgQmCLYIOI2gBIgINGQJbBIhCnxKPcJBGAQoBAQEfgQGFU4x0gUQFjh+IQqonAh8BAUKEIiCFHIEHAQEB X-IronPort-AV: E=Sophos;i="5.20,395,1444708800"; d="scan'208";a="254618616" Received: from nipigon.cs.uoguelph.ca (HELO zcs1.mail.uoguelph.ca) ([131.104.99.173]) by esa-jnhn.mail.uoguelph.ca with ESMTP; 07 Dec 2015 09:02:35 -0500 Received: from localhost (localhost [127.0.0.1]) by zcs1.mail.uoguelph.ca (Postfix) with ESMTP id D4A7915F56D for ; Mon, 7 Dec 2015 09:02:35 -0500 (EST) Received: from zcs1.mail.uoguelph.ca ([127.0.0.1]) by localhost (zcs1.mail.uoguelph.ca [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id yb1RNB1F7loJ for ; Mon, 7 Dec 2015 09:02:35 -0500 (EST) Received: from localhost (localhost [127.0.0.1]) by zcs1.mail.uoguelph.ca (Postfix) with ESMTP id 80D9115F56E for ; Mon, 7 Dec 2015 09:02:35 -0500 (EST) X-Virus-Scanned: amavisd-new at zcs1.mail.uoguelph.ca Received: from zcs1.mail.uoguelph.ca ([127.0.0.1]) by localhost (zcs1.mail.uoguelph.ca [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id Gcs463xnVaUO for ; Mon, 7 Dec 2015 09:02:35 -0500 (EST) Received: from zcs1.mail.uoguelph.ca (zcs1.mail.uoguelph.ca [172.17.95.18]) by zcs1.mail.uoguelph.ca (Postfix) with ESMTP id 659DE15F56D for ; Mon, 7 Dec 2015 09:02:35 -0500 (EST) Date: Mon, 7 Dec 2015 09:02:35 -0500 (EST) From: Rick Macklem To: FreeBSD Current Message-ID: <900422043.121631608.1449496955386.JavaMail.zimbra@uoguelph.ca> Subject: slow screen updates on laptop console (i386) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-Originating-IP: [172.17.95.11] X-Mailer: Zimbra 8.0.9_GA_6191 (ZimbraWebClient - FF42 (Win)/8.0.9_GA_6191) Thread-Topic: slow screen updates on laptop console (i386) Thread-Index: xlx/xjZeDfPKB7dWw8yBR1kX4H2Zzw== X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 07 Dec 2015 14:02:47 -0000 Hi, When running FreeBSD-current on an old i386 laptop, the console screen is intermittently slow to display output. The hesitations can be several seconds. Sometimes it shows up when I'm typing such that it takes seconds for the characters to echo. I think it is the display/output side, since I've seen it happen when doing "more ", where the screen is stuck half way through displaying the page for a few seconds. I don't see any problem when going into the machine remotely and I don't see the problem on the other laptop I have running FreeBSD/amd64. It has been happening for a while. It occurs on the oldest kernel I have lying around (r287930, Sep. 17, 2015). I've tried the old "sc" driver and it seems to happen less with it, but it still occurs. I'll admit I have no idea what drives doing output for the display screen. Anyone have ideas w.r.t. this? Thanks in advance, rick