From owner-freebsd-current@FreeBSD.ORG Mon Mar 23 13:17:13 2015 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 8451DA98; Mon, 23 Mar 2015 13:17:13 +0000 (UTC) Received: from mail.egr.msu.edu (boomhauer.egr.msu.edu [35.9.37.167]) by mx1.freebsd.org (Postfix) with ESMTP id 5C368974; Mon, 23 Mar 2015 13:17:12 +0000 (UTC) Received: from boomhauer (localhost [127.0.0.1]) by mail.egr.msu.edu (Postfix) with ESMTP id 4FE4E33297; Mon, 23 Mar 2015 09:09:48 -0400 (EDT) X-Virus-Scanned: amavisd-new at egr.msu.edu Received: from mail.egr.msu.edu ([127.0.0.1]) by boomhauer (boomhauer.egr.msu.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id OByAvBRGN9FO; Mon, 23 Mar 2015 09:09:48 -0400 (EDT) Received: from EGR authenticated sender mcdouga9 Message-ID: <5510109B.7070205@egr.msu.edu> Date: Mon, 23 Mar 2015 09:09:47 -0400 From: Adam McDougall User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:31.0) Gecko/20100101 Thunderbird/31.5.0 MIME-Version: 1.0 To: Glen Barber Subject: Re: Broadwell Support FreeBSD 10.1 References: <550F50F6.7060306@marspolar.com> <20150322234900.GI13428@hub.FreeBSD.org> In-Reply-To: <20150322234900.GI13428@hub.FreeBSD.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit Cc: freebsd-current@freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 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, 23 Mar 2015 13:17:13 -0000 On 03/22/2015 19:49, Glen Barber wrote: > On Sun, Mar 22, 2015 at 04:32:06PM -0700, Marek Novotny wrote: >> New to this group, and new to FreeBSD via PC-BSD. Really like it so far. >> Sorry if this has been asked to death already. Levono has their new T450 >> with the 5th gen intel Broadwell i5 processor. I bought it with the hopes of >> running PC-BSD latest version on it. It uses intel 5500 graphics as well. >> Any potential issues using this?? >> > > You won't be able to use accelerated graphics. > > I have the T540p which has the i7-4800MQ, and am quite happy with > running FreeBSD CURRENT on it. I don't care about accelerated graphics > too much, though. > > One nit with the laptop is I needed to use an external USB flash drive > to store /boot on an MBR partition, because my hard drives are > GPT-partitioned using ZFS on '/' on GELI-encrypted providers. > Otherwise, I have noticed that using the /boot on the GPT disk enforces > low resolution graphics (640x480 IIRC). > > By using a USB flash drive for /boot, I can get 1920x1080 resolution > (one of the many reasons for choosing this laptop). > > (I've been meaning to put this into the FreeBSD Wiki, but EBUSY.) > > Glen > Glen, in the past I briefly tested the uefi bootloader on a Lenovo T440s including with scfb and I believe the default resolution would raise to native if I also disabled CSM mode in the "bios". This affected the console mode as well as scfb which both inherit the framebuffer from the uefi GOP as I understand it. Have you tried that? You should be able to demonstrate it while booted from a uefi boot stick, no permanent system changes necessary. I've also been looking forward to see if this trick works with uefi since xf86-video-scfb performance was perfectly usable on a uefi booted mac but not the lenovo: https://forums.freebsd.org/threads/xorg-vesa-driver-massive-speedup-using-mtrr-write-combine.46723/