From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935085AbdKQO0S (ORCPT ); Fri, 17 Nov 2017 09:26:18 -0500 Received: from smtp-1b.atlantis.sk ([80.94.52.26]:35108 "EHLO smtp-1b.atlantis.sk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935016AbdKQO0J (ORCPT ); Fri, 17 Nov 2017 09:26:09 -0500 From: Ondrej Zary To: Ben Skeggs Subject: Blank console but X11 works on MCP79 - old regression since 3.8 Date: Fri, 17 Nov 2017 15:26:00 +0100 User-Agent: KMail/1.9.10 (enterprise35 0.20100827.1168748) Cc: nouveau@lists.freedesktop.org, linux-kernel@vger.kernel.org MIME-Version: 1.0 Content-Type: Text/Plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <201711171526.01053.linux@rainbow-software.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, I've just been hit by this old bug which is still present in 4.14: https://bugs.freedesktop.org/show_bug.cgi?id=80675 On MCP79 (ION), when stolen memory is set to 32MB in BIOS, console is blank but X11 works. When the stolen memory is increased to 64MB, console works fine. Bisected it to this: 4f6029da58ba9204c98e33f4f3737fe085c87a6f is the first bad commit commit 4f6029da58ba9204c98e33f4f3737fe085c87a6f Author: Ben Skeggs Date: Fri Nov 16 11:54:31 2012 +1000 drm/nv50-nvc0: switch to common disp impl, removing previous version Signed-off-by: Ben Skeggs It's a big change so I'm not able to do more debugging. -- Ondrej Zary