From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dave Jones Subject: Re: Intel Core 2 Quad Q8400 reported as Unknown CPU Date: Fri, 29 Apr 2011 15:21:02 -0400 Message-ID: <20110429192101.GA5498@redhat.com> References: Mime-Version: 1.0 Return-path: Content-Disposition: inline In-Reply-To: Sender: cpufreq-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Tomas.Linden@helsinki.fi Cc: cpufreq@vger.kernel.org On Fri, Apr 29, 2011 at 05:50:00PM +0300, Tomas.Linden@helsinki.fi wrote: > Hello! > > I upgraded my Intel Core 2 Duo to a Core 2 Quad Q8400 on my Intel DP35DP motherboard. > I send this mail because I found this messages in my dmesg: > > p4-clockmod: Unknown CPU. Please send an e-mail to > p4-clockmod: Unknown CPU. Please send an e-mail to > p4-clockmod: Unknown CPU. Please send an e-mail to > p4-clockmod: Unknown CPU. Please send an e-mail to ignore it, p4-clockmod is a waste of bits anyway. > cpuinfo and dmesg are at the end of this e-mail. I'm a bit worried because > I bought the new CPU to have hardware virtualization support (VT-X). > http://ark.intel.com/Product.aspx?id=38512&processor=Q8400&spec-codes=SLGT6 > but cpuinfo does not list the vtx flag for me. I'm using Fedora 13 and I > tried booting to a F14 USB stick as well and neither shows the vtx flag. ... > processor : 0 > vendor_id : GenuineIntel > cpu family : 6 > model : 23 > model name : 06/17 ^^^^^ This is a sign your BIOS has no idea what that CPU is. It should be a nice non-numeric name. Which could explain why VTX isn't showing up. (Possibly also EST too, which would be much better than using p4-clockmod). Look for a BIOS update. Dave