NetBSD Problem Report #53300

From www@NetBSD.org  Sun May 20 13:39:11 2018
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Date: Sun, 20 May 2018 13:39:10 +0000 (UTC)
From: chris@sogubsys.com
Reply-To: chris@sogubsys.com
To: gnats-bugs@NetBSD.org
Subject: Laptop with external monitor attach, external monitor screen resolution used on laptop screen for fb bootup console output
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>Number:         53300
>Category:       install
>Synopsis:       Laptop with external monitor attach, external monitor screen resolution used on laptop screen for fb bootup console output
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun May 20 13:40:00 +0000 2018
>Last-Modified:  Mon May 21 06:20:01 +0000 2018
>Originator:     Chris Humphries
>Release:        8.0_RC1
>Organization:
>Environment:
AMD64 installation iso
Samsung R580 Laptop
>Description:
I had an external monitor attached to my laptop when installing, and it seems that NetBSD detected the other monitor's screen resolution and used that for the console framebuffer(?) output, resulting in text I couldn't read "below" my laptop screen.

I unplugged the external monitor and tried again, and the issue went away and nothing was "below" my laptop screen.


I only caught the issue because NetBSD fails to install if you have two CD devices and install from the second, it asks for root device info, etc (cd0 not used, cd1 used for installation). I couldn't see the prompts without pressing enter several times for it to scroll up. Installation appeared to freeze, but I just couldn't see the prompts.
>How-To-Repeat:
Attempt installation with an external monitor with greater resolution than laptop. Laptop is still main monitor and external monitor isn't even used.
>Fix:

>Audit-Trail:
From: Martin Husemann <martin@duskware.de>
To: gnats-bugs@NetBSD.org
Cc: install-manager@netbsd.org, gnats-admin@netbsd.org,
	netbsd-bugs@netbsd.org
Subject: Re: install/53300: Laptop with external monitor attach, external
 monitor screen resolution used on laptop screen for fb bootup console output
Date: Mon, 21 May 2018 08:16:13 +0200

 On Sun, May 20, 2018 at 01:40:00PM +0000, chris@sogubsys.com wrote:

 > I had an external monitor attached to my laptop when installing, and
 > it seems that NetBSD detected the other monitor's screen resolution and
 > used that for the console framebuffer(?) output, resulting in text I
 > couldn't read "below" my laptop screen.

 Could you please povide the full dmesg output whith the monitor
 attached?

 Thanks,

 Martin

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