Date: Thu, 24 Jan 2008 17:05:00 -0600 (CST) From: "Sean C. Farley" <scf@FreeBSD.org> To: Baldur Gislason <baldur@foo.is> Cc: freebsd-current@FreeBSD.org Subject: Re: 4GB RAM with an intel core 2 processor Message-ID: <alpine.BSF.1.00.0801241700190.30754@thor.farley.org> In-Reply-To: <20080124182710.GC14026@gremlin.foo.is> References: <20080124182710.GC14026@gremlin.foo.is>
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On Thu, 24 Jan 2008, Baldur Gislason wrote: > I recently tried to upgrade my Dell workstation from 2GB to 4GB RAM. > It's an Optiplex 755 with an Intel Core 2 Quad Q6600 processor. I'm > running 7.0-RC1 When I install the 2 extra memory modules, the kernel > tells me on startup that it's ignoring 640MB memory above 4GB, leaving > me with a total of 3.375GB of accessible memory. However when X starts > (using a PCI-e Geforce with nvidia driver) the system reboots. > Now, I took a quick look at PAE and discovered that the PAE kernel is > not meant for anything but headless systems, most of the drivers > (including USB!) are out and no module support either. > > Do I have any options for using my 4GB of RAM and still retain USB and > the nvidia driver? The nvidia driver supposedly does not support PAE, and I know it does not support memory remapping (at least with FreeBSD). If you disable memory remapping in the BIOS, then the reboots should stop. I do not know if the Optiplex 755 has that option or not. Sean -- scf@FreeBSD.org
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