From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932279Ab1JXMfr (ORCPT ); Mon, 24 Oct 2011 08:35:47 -0400 Received: from mail-ww0-f44.google.com ([74.125.82.44]:47499 "EHLO mail-ww0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932166Ab1JXMfn (ORCPT ); Mon, 24 Oct 2011 08:35:43 -0400 Date: Mon, 24 Oct 2011 13:35:39 +0100 From: Andrew Benton To: Linux Kernel mailing list Subject: [drm:radeon_dp_i2c_aux_ch] *ERROR* aux i2c too many retries, giving up Message-Id: <20111024133539.a910e1ea.b3nton@gmail.com> X-Mailer: Sylpheed 3.1.2 (GTK+ 2.24.4; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello When I boot up my computer with a 3.1 kernel I get a scary error message just bellow the penguins: [drm:radeon_dp_i2c_aux_ch] *ERROR* aux i2c too many retries, giving up On a dual core it's printed twice, on a quad core it's printed 4 times. I compile my kernels without modules and with the Radeon firmware compiled into the kernel. As far as I can see the computers are working perfectly but I'd like to understand this error message. It seems a bit strange that it's printed to the screen even if I boot the kernel with the quiet command line option. If someone could tell me what the error message means I would be grateful (please CC me as I'm not subscribed). I emailed this list asking about this last Wednesday but got no replies so I've had to simply fall back on removing this kernel "feature": sed -i 's#\tDRM_ERROR("aux i2c#//&#' \ drivers/gpu/drm/radeon/atombios_dp.c This makes the error message go away but it's not ideal, I'd rather understand what it means. Andy