From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933227AbYEIG0X (ORCPT ); Fri, 9 May 2008 02:26:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756785AbYEIG0L (ORCPT ); Fri, 9 May 2008 02:26:11 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:59784 "EHLO sunset.davemloft.net" rhost-flags-OK-FAIL-OK-OK) by vger.kernel.org with ESMTP id S1754244AbYEIG0K (ORCPT ); Fri, 9 May 2008 02:26:10 -0400 Date: Thu, 08 May 2008 23:26:02 -0700 (PDT) Message-Id: <20080508.232602.193723628.davem@davemloft.net> To: jengelh@medozas.de Cc: linux-kernel@vger.kernel.org, adaplas@pol.net, hpa@zytor.com, alan@lxorguk.ukuu.org.uk, akpm@linux-foundation.org, torvalds@linux-foundation.org Subject: Re: 2.6.26-rcX VC console scrolling regression From: David Miller In-Reply-To: References: <20080507.214637.193700986.davem@davemloft.net> X-Mailer: Mew version 5.2 on Emacs 22.1 / Mule 5.0 (SAKAKI) 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 From: Jan Engelhardt Date: Thu, 8 May 2008 13:50:57 +0200 (CEST) > My guess is that you see the effects of incomplete font table/position > switching, something along the lines a `cat /dev/urandom` would cause. > Using the very same kernel and boot params (vga=791 or anything to > switch it to fbcon), I cannot trigger the problem on opensuse. Jan, there is code in drivers/video/console/fbcon.c:fbcon_do_set_font() which makes changes to vc->vc_video_erase_char, maybe that code needs to update the new vc->vc_scrl_erase_char you added? It would be nice if you could audit the tree to see if any other cases have been missed like this as well.