From owner-freebsd-current@freebsd.org Sat Jan 14 22:11:49 2017 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 C9890CAFC72 for ; Sat, 14 Jan 2017 22:11:49 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-wm0-x22d.google.com (mail-wm0-x22d.google.com [IPv6:2a00:1450:400c:c09::22d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 5F3491AF3 for ; Sat, 14 Jan 2017 22:11:49 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: by mail-wm0-x22d.google.com with SMTP id r144so120998954wme.1 for ; Sat, 14 Jan 2017 14:11:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=Hq7ra2fEkV1HW7BOH5CpI3OGylspnqxr2bu+OWBGYPk=; b=eJthhrHxn8YfCssZq2HU0lYvZ/LQU5xlOrgpv+EPqLodvNDKOoj0U5w6Jt6E4mF7wi Kw/TnKFBMbwAMmk3VsZKPeT/KHn4+amiCnSNmVf76Um4c9mlREEufiZpl/MeRRYH+SpA rwlk4Oi2ck6Dj36isSAzx3wj9SaoEqAx3V+Mx83uCrRa6xCli3Bz4AdZ955S5vTLbgQ8 N2JsxOqJe6UUvx2waxe3kJR1IWtLRbXUejdZxgSdw+/OOi9sJ8JgZytrU6t2ubP39Xw6 qNcqM94oOZtVm5DxpgqSJ3jLOcMA2qfJOiHIKRPxaVfKpATXfJANqPZll98CO69EPo3Y Q5dQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=Hq7ra2fEkV1HW7BOH5CpI3OGylspnqxr2bu+OWBGYPk=; b=qHh12GrMJKAnCej160FEJv1r6SD8iRODgWEdC22R+eeS2JhYKUSFcL+g0Nu4gySl0G BhE2xFl3xsDpGBAmSYRcRcjjrK9CkBu9BcwlIDW/NZKAB0/bY0P+fykY7aZmkDDcwe6y SO3aFqZ3TvYUkm0Tt2v/Lszv1hLxKGjdbYby/mr2RUvLs7ypTXQWV/i4qllLWooC+7y7 o399UTKlOPqCMoexn5P30Z9hkAGrMHn5N+vmO2rKz2qMlPoiUdR1qwnlEZ7lvScBhw/a DdD4GJmGYcJPgcqLwyY/hk46/klz+vqIvk4RCzal2Db8OP23KLIBLwBfC3hCPPcQZYBF UGCA== X-Gm-Message-State: AIkVDXIBkOI3VtPXTJ00Iq+pkxIyrhc04v4kiuSlrLUHCNst70/AHCfkHFQv7/Dontg1U/UT1CwKX+kYC0S2tw== X-Received: by 10.28.58.204 with SMTP id h195mr6164490wma.116.1484431907692; Sat, 14 Jan 2017 14:11:47 -0800 (PST) MIME-Version: 1.0 Received: by 10.194.82.162 with HTTP; Sat, 14 Jan 2017 14:11:46 -0800 (PST) In-Reply-To: References: <96CA08DF-582A-4405-9E65-B19230EA37DA@gmail.com> From: Adrian Chadd Date: Sat, 14 Jan 2017 14:11:46 -0800 Message-ID: Subject: Re: vt(4) chops off the leftmost three columns To: Matthias Andree Cc: freebsd-current Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.23 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: Sat, 14 Jan 2017 22:11:49 -0000 It depends(tm). I think the VT code just does "640x480x4bpp" and lets the BIOS sort it out. A lot of things don't cope well with 640x480 these days - they try autodetecting picture edges, but a black border makes that very difficult. -adrian On 14 January 2017 at 08:57, Matthias Andree wrote: > Am 14.01.2017 um 00:11 schrieb Alan Somers: >> I take it back. The first three columns _are_ rendered, but they >> don't show up on some monitiors. It's as if those monitors require a >> minimum amount of overscan on the left side of the screen, and vt(4) >> doesn't provide enough. Can that be tuned? > > Once upon a time, I've seen similar things on Linux, but with fewer > pixels offset, when switching framebuffer drivers - back then, the > scanning-VGA-timing was an issue. Is there any way to tweak the row and > column timings, with blank periods, viewport offsets and thereabouts? > _______________________________________________ > freebsd-current@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"