From owner-freebsd-questions@freebsd.org Fri Jul 21 00:02:58 2017 Return-Path: Delivered-To: freebsd-questions@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 4D7E2CFF1C3 for ; Fri, 21 Jul 2017 00:02:58 +0000 (UTC) (envelope-from byrnejb@harte-lyne.ca) Received: from inet08.hamilton.harte-lyne.ca (inet08.hamilton.harte-lyne.ca [216.185.71.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "inet08.hamilton.harte-lyne.ca", Issuer "CA_HLL_ISSUER_2016" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 2049B819C0 for ; Fri, 21 Jul 2017 00:02:57 +0000 (UTC) (envelope-from byrnejb@harte-lyne.ca) Received: from localhost (localhost [127.0.0.1]) by inet08.hamilton.harte-lyne.ca (Postfix) with ESMTP id 7182A6211D for ; Thu, 20 Jul 2017 20:02:50 -0400 (EDT) X-Virus-Scanned: amavisd-new at harte-lyne.ca Received: from inet08.hamilton.harte-lyne.ca ([127.0.0.1]) by localhost (inet08.hamilton.harte-lyne.ca [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8Lb8oSL_IPSw for ; Thu, 20 Jul 2017 20:02:48 -0400 (EDT) Received: from webmail.harte-lyne.ca (inet04.hamilton.harte-lyne.ca [216.185.71.24]) (using TLSv1 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by inet08.hamilton.harte-lyne.ca (Postfix) with ESMTPSA id 926C662103 for ; Thu, 20 Jul 2017 20:02:48 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=harte-lyne.ca; s=dkim_hll; t=1500595368; bh=i+dF+uMZT7aRRdpd5bb7EU4HJK5U8QBRVN8hMAkXW/k=; h=Date:Subject:From:To:Reply-To; b=W2eXkPxsaRyn2BlpMEsXQ8t8/J27ffITFfBP0ErwUdpHKFnBLRC1QBt8xj4oOcY/H 2n46YiQ3tmYSGOrjlw7I3jgNysU8iR3pLTw3jTiWCLPc8lhE6z5BTCjO6cXByKJ8ZO J7Jq6SONh6QSBMvqs3f6Hf+9BBtmkhBYA90ddlbyEE0XEuNDFR6n9PMO9DtYmy4m7U wTh8BWqkjL+26TVeG9tPkyFwaYELv+6qy8o5FtrLgB7sRaX2IcwIdyW5vmahMvRVtH ub+WZZMVywNpas5jAY6DR6gFiokpTSrnxUlwHgnwMZ+7PycX3nxLSGK7CdjyDHd8T9 8zicadCR2P4Qg== Received: from 216.185.71.22 (SquirrelMail authenticated user byrnejb_hll) by webmail.harte-lyne.ca with HTTP; Thu, 20 Jul 2017 20:02:48 -0400 Message-ID: <971f810719a155f3963f2ff37c3488d3.squirrel@webmail.harte-lyne.ca> Date: Thu, 20 Jul 2017 20:02:48 -0400 Subject: UEFI and FreeBSD-11 From: "James B. Byrne" To: freebsd-questions@freebsd.org Reply-To: byrnejb@harte-lyne.ca User-Agent: SquirrelMail/1.4.22-5.el6 MIME-Version: 1.0 Content-Type: text/plain;charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Priority: 3 (Normal) Importance: Normal X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 21 Jul 2017 00:02:58 -0000 My CentOS-6 based workstation is dying a slow death due to bit rot and so I decided to swap out the existing disc drive for another. Given that I had to reinstall anyway I decided that now was the time to try out FreeBSD-11 as a desktop. This Intel based system had UEFI enabled. Apparently this may have a surprising, to me, effect on the video display used for the system console in text mode. For whatever reason the boot process insists on treating a 480x640 60Hz display as 800 x 480 at some other refresh rate, probably 75Hz. This produces a difficult to read flickering display and oddball presentation artifacts such as typing at a cursor presented mid way from the top over existing text and displaying the output at the bottom of the screen. Is this a known phenomenon? Is there something that I am supposed to do to get this to work properly or do I just disable UEFI? -- *** e-Mail is NOT a SECURE channel *** Do NOT transmit sensitive data via e-Mail Do NOT open attachments nor follow links sent by e-Mail James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3