From owner-freebsd-current@FreeBSD.ORG  Wed May  6 09:06:49 2015
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id B9010A52
 for <freebsd-current@freebsd.org>; Wed,  6 May 2015 09:06:49 +0000 (UTC)
Received: from outpost1.zedat.fu-berlin.de (outpost1.zedat.fu-berlin.de
 [130.133.4.66])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 78896181D
 for <freebsd-current@freebsd.org>; Wed,  6 May 2015 09:06:49 +0000 (UTC)
Received: from inpost2.zedat.fu-berlin.de ([130.133.4.69])
 by outpost.zedat.fu-berlin.de (Exim 4.85)
 for freebsd-current@freebsd.org with esmtp
 (envelope-from <ohartman@zedat.fu-berlin.de>)
 id <1YpvHs-0043er-N8>; Wed, 06 May 2015 11:06:40 +0200
Received: from p578a69f9.dip0.t-ipconnect.de ([87.138.105.249]
 helo=freyja.zeit4.iv.bundesimmobilien.de)
 by inpost2.zedat.fu-berlin.de (Exim 4.85)
 for freebsd-current@freebsd.org with esmtpsa
 (envelope-from <ohartman@zedat.fu-berlin.de>)
 id <1YpvHs-0036It-JA>; Wed, 06 May 2015 11:06:40 +0200
Date: Wed, 6 May 2015 11:06:31 +0200
From: "O. Hartmann" <ohartman@zedat.fu-berlin.de>
To: freebsd-current <freebsd-current@freebsd.org>
Subject: vt: blank screen switching from X11 to console/vtty
Message-ID: <20150506110631.403eec15@freyja.zeit4.iv.bundesimmobilien.de>
Organization: FU Berlin
X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.27; amd64-portbld-freebsd11.0)
MIME-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
X-Originating-IP: 87.138.105.249
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.20
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
 <freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-current>, 
 <mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current/>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
 <mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 06 May 2015 09:06:49 -0000

Running a Fujitsu Celsius M740 Workstation with a nVidia Quadro NVS 315 GPU,
most recent driver (346.16), UEFI boot, and FreeBSD 11.0-CURRENT FreeBSD
11.0-CURRENT #1 r282520: Wed May  6 08:14:14 CEST 2015 amd64, switching from
graphics terminal (X11), located at vty7 (xdm) to any console vty[0-6], results
in a blank screen.

I use older nVidia hardware (GTX560Ti) on another system with the same
CURRENT and xorg port (most recent updated), but with legacy boot (no UEFI),
but with vt() enabled and same revision of the nVidia driver, there is no
problem switching from graphical console to consoles.

What is the solution, if any?

Regards,

O. Hartmann