From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964791AbXDGAxf (ORCPT ); Fri, 6 Apr 2007 20:53:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964806AbXDGAxf (ORCPT ); Fri, 6 Apr 2007 20:53:35 -0400 Received: from smtp-out3.blueyonder.co.uk ([195.188.213.6]:51400 "EHLO smtp-out3.blueyonder.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964791AbXDGAxd (ORCPT ); Fri, 6 Apr 2007 20:53:33 -0400 Date: Sat, 7 Apr 2007 01:53:31 +0100 To: linux-kernel@vger.kernel.org Subject: Hanging on activating cpufreq Message-ID: <20070407005331.GD13699@amphibian.dyndns.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="W/nzBZO5zC0uMSeA" Content-Disposition: inline User-Agent: Mutt/1.5.13 (2006-08-11) From: Matthew Toseland Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --W/nzBZO5zC0uMSeA Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Linux hangs when powernow-k8 attempts to change the clock speed. Happens on 2.6.21-rc6, -rc5 and (at least) back to 2.6.18. The hang occurs before loading X and so is in text mode. alt+sysrq+z/b/etc doesn't work, nor does the NMI watchdog despite its being loaded ("Testing NMI watchdog ... OK."). However, the hangcheck option *does* work (reboots it a few seconds after it hangs). Another interesting point is that this motherboard (asus M2V, via K8T890 based) worked until yesterday with a different CPU. But since hangcheck works, the CPU must still be active. I have been through the relevant BIOS settings, and googled extensively. Any hints as to how to debug this further, or whether it is likely to be worthwhile to do so? --W/nzBZO5zC0uMSeA Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQFGFuuLA9rUluQ9pFARApUgAKCS+cJGgFVfaeGfGwHaleX462SOGgCgjxG7 3Q1bvD3g1KtP5bMuof0uX30= =xOLC -----END PGP SIGNATURE----- --W/nzBZO5zC0uMSeA--