linux-kernel - Re: 2.6.26-rcX VC console scrolling regression

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Message-Id: <20080508.232602.193723628.davem@davemloft.net>
Date:	Thu, 08 May 2008 23:26:02 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	jengelh@...ozas.de
Cc:	linux-kernel@...r.kernel.org, adaplas@....net, hpa@...or.com,
	alan@...rguk.ukuu.org.uk, akpm@...ux-foundation.org,
	torvalds@...ux-foundation.org
Subject: Re: 2.6.26-rcX VC console scrolling regression

From: Jan Engelhardt <jengelh@...ozas.de>
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.
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