Bug#856662: xorg: starting X within X without specifying -vt destroys current X session

[John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>]

Control: tags -1 unreproducible
Control: tags -1 moreinfo

Hello!

First of all, I'm not sure whether this is a valid bug report. You are
basically trying to shoot yourself into the foot and you are surprised
that you get hit.

Independent from that, I cannot reproduce your problem on KDE with SDDM:

glaubitz@ikarus:~$ X :1

X.Org X Server 1.19.2
Release Date: 2017-03-02
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.16.0-4-amd64 x86_64 Debian
Current Operating System: Linux ikarus 4.9.0-1-amd64 #1 SMP Debian 4.9.6-3 (2017-01-28) x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.9.0-1-amd64 root=UUID=8d61a11d-7005-4415-8831-07b626b8d8bd ro quiet
Build Date: 03 March 2017  03:14:41PM
xorg-server 2:1.19.2-1 (https://www.debian.org/support)
Current version of pixman: 0.34.0
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/home/glaubitz/.local/share/xorg/Xorg.1.log", Time: Fri Mar  3 20:24:18 2017
(==) Using config directory: "/etc/X11/xorg.conf.d"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(EE)
Fatal server error:
(EE) parse_vt_settings: Cannot open /dev/tty0 (Permission denied)
(EE)
(EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
(EE) Please also check the log file at "/home/glaubitz/.local/share/xorg/Xorg.1.log" for additional information.
(EE)
(EE) Server terminated with error (1). Closing log file.
glaubitz@ikarus:~$ startx -- :1


X.Org X Server 1.19.2
Release Date: 2017-03-02
X Protocol Version 11, Revision 0
Build Operating System: Linux 3.16.0-4-amd64 x86_64 Debian
Current Operating System: Linux ikarus 4.9.0-1-amd64 #1 SMP Debian 4.9.6-3 (2017-01-28) x86_64
Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.9.0-1-amd64 root=UUID=8d61a11d-7005-4415-8831-07b626b8d8bd ro quiet
Build Date: 03 March 2017  03:14:41PM
xorg-server 2:1.19.2-1 (https://www.debian.org/support)
Current version of pixman: 0.34.0
        Before reporting problems, check http://wiki.x.org
        to make sure that you have the latest version.
Markers: (--) probed, (**) from config file, (==) default setting,
        (++) from command line, (!!) notice, (II) informational,
        (WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/home/glaubitz/.local/share/xorg/Xorg.1.log", Time: Fri Mar  3 20:24:35 2017
(==) Using config directory: "/etc/X11/xorg.conf.d"
(==) Using system config directory "/usr/share/X11/xorg.conf.d"
(EE)
Fatal server error:
(EE) parse_vt_settings: Cannot open /dev/tty0 (Permission denied)
(EE)
(EE)
Please consult the The X.Org Foundation support
         at http://wiki.x.org
 for help.
(EE) Please also check the log file at "/home/glaubitz/.local/share/xorg/Xorg.1.log" for additional information.
(EE)
(EE) Server terminated with error (1). Closing log file.
 ^Cxinit: giving up
xinit: unable to connect to X server: Connection refused
xinit: unexpected signal 2
Couldn't get a file descriptor referring to the console
glaubitz@ikarus:~$

Thanks,
Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz@debian.org
`. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913