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Date: Wed, 28 Jan 2015 22:05:28 -0600
From: CyberLeo Kitsana <cyberleo@cyberleo.net>
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To: "William A. Mahaffey III" <wam@hiwaay.net>, 
 "FreeBSD Questions !!!!" <freebsd-questions@freebsd.org>
Subject: Re: Is QEMU working/reliable under ....
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On 01/28/2015 10:30 AM, William A. Mahaffey III wrote:
<snip>
> [root@kabini1, WinXP, 10:21:44am] 503 % qemu-system-i386 -cdrom
> ../../../ISOs/winxp.iso -hda HDD.img -m 256 -boot d -cpu athlon -vga std
> -no-acpi -localtime
> Invalid MIT-MAGIC-COOKIE-1 key
> (<unknown>:20227): Gtk-WARNING **: cannot open display: :0.0
> [root@kabini1, WinXP, 10:21:48am] 504 %
> 
> I am logged into root via 'su' from my regular user, rxvt-2.6.4_6
> terminal window, system tcsh, xfce-4.10_7 desktop,
> xorg-server-1.14.7_1,1, FreeBSD 9.3-RELEASE-p5 .... The su process
> doesn't get the graphics environment set correctly for root, I see this
> a lot :-/ .... What do I need to do to get the GUI to display for me ?
> TIA & thanks for your reply.

Either authorize root by running this, as the user logged into X:

xhost +si:localuser:root

or copy the xauth cookie into root's account using something like the
following:

sh -c 'xauth list "${DISPLAY}" | sed -e "s/^/add /" | sudo xauth'

But I suppose a better question is: why are you running qemu as root?

-- 
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