Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754869AbcCCCiO (ORCPT ); Wed, 2 Mar 2016 21:38:14 -0500 Received: from know-smtprelay-omc-1.server.virginmedia.net ([80.0.253.65]:50967 "EHLO know-smtprelay-omc-1.server.virginmedia.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752046AbcCCCiN (ORCPT ); Wed, 2 Mar 2016 21:38:13 -0500 X-Originating-IP: [82.27.143.36] X-Spam: 0 X-Authority: v=2.1 cv=KZcvylsD c=1 sm=1 tr=0 a=sI0VlXMVYIpMuXrauH8AmA==:117 a=sI0VlXMVYIpMuXrauH8AmA==:17 a=L9H7d07YOLsA:10 a=9cW_t1CCXrUA:10 a=s5jvgZ67dGcA:10 a=IkcTkHD0fZMA:10 a=7OsogOcEt9IA:10 a=mLLLmhh3Ns2vIzdDrJkA:9 a=QEXdDO2ut3YA:10 Date: Thu, 3 Mar 2016 02:38:11 +0000 From: Ken Moffat To: linux-kernel@vger.kernel.org Subject: [drm:radeon_dp_link_train] *ERROR* clock recovery failed Message-ID: <20160303023811.GA31411@milliways> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline X-Clacks-Overhead: GNU Terry Pratchett Content-Transfer-Encoding: 8bit User-Agent: Mutt/1.5.24 (2015-08-30) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1083 Lines: 20 One of my machines is an A10 Kaveri desktop, with a good old VGA connection to the monitor. I've only just started trying to boot any 4.5 kernel on it, but with 4.5.0-rc6 and now linus's tree from a few hours ago (4.5.0-rc6-00018-gf983cd3) I get a blank screen, with no video signal, as soon as it tries to switch to a framebuffer. Comparing the logs, the first bad attempt had a couple of new error messages, everything else in the logs looked normal - Mar 1 19:31:10 deluxe kernel: [ 2.543163] fbcon: radeondrmfb (fb0) is primary device Mar 1 19:31:10 deluxe kernel: [ 2.654179] [drm:radeon_dp_link_train] *ERROR* clock recovery reached max voltage Mar 1 19:31:10 deluxe kernel: [ 2.654181] [drm:radeon_dp_link_train] *ERROR* clock recovery failed Mar 1 19:31:10 deluxe kernel: [ 2.677142] Console: switching to colour frame buffer device 200x56 Mar 1 19:31:10 deluxe kernel: [ 2.680435] radeon 0000:00:01.0: fb0: radeondrmfb frame buffer device Any suggestions where to start looking, please ? ĸen -- This email was written using 100% recycled letters.