Package: gdm3 Version: 2.30.2-4 Severity: normal If /etc/inittab has been modified to run something (e.g. another getty) on vt7, when gdm3 runs during system startup, it runs the X server on vt7 anyway, creating a conflict that makes Xorg peg the CPU (though it's still possible to log in and use the system). If gdm3 is restarted, it then runs the X server on another, unused VT, so the conflict doesn't occur. But it always uses vt7 the first time.
Under GDM 2.x, it was possible to configure which VT the X server would run on, using gdmsetup. Under gdm3, gdmsetup is very minimal, and even looking in /etc/gdm3 I don't see a place to configure which VT the server should run on. As far as I can tell, it makes the determination automatically, but gets it wrong when run during system startup. https://bugzilla.redhat.com/show_bug.cgi?id=475890 has some discussion of a similar problem encountered in Fedora awhile back. That discussion revolves around Fedora's graphical boot system and things running Xorg on vt1, so their solutions aren't applicable to Debian, but the strace output in the initial description is exactly what I saw on my Debian system, and it's clear from the discussion that the problem is caused by running both Xorg and a getty on the same virtual terminal. -- System Information: Debian Release: squeeze/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'stable'), (1, 'experimental') Architecture: amd64 (x86_64) Kernel: Linux 2.6.34-1-amd64 (SMP w/2 CPU cores) Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/bash Versions of packages gdm3 depends on: ii adduser 3.112 add and remove users and groups ii debconf [debconf-2.0] 1.5.32 Debian configuration management sy ii gconf2 2.28.1-3 GNOME configuration database syste ii gnome-session [x-sessio 2.30.0-1 The GNOME Session Manager - GNOME ii gnome-session-bin 2.30.0-1 The GNOME Session Manager - Minima ii gnome-terminal [x-termi 2.30.2-1 The GNOME terminal emulator applic ii libart-2.0-2 2.3.21-1 Library of functions for 2D graphi ii libatk1.0-0 1.30.0-1 The ATK accessibility toolkit ii libattr1 1:2.4.44-2 Extended attribute shared library ii libaudit0 1.7.13-1+b2 Dynamic library for security audit ii libbonobo2-0 2.24.3-1 Bonobo CORBA interfaces library ii libbonoboui2-0 2.24.3-1 The Bonobo UI library ii libc6 2.11.2-2 Embedded GNU C Library: Shared lib ii libcairo2 1.8.10-4 The Cairo 2D vector graphics libra ii libcanberra-gtk0 0.24-1 Gtk+ helper for playing widget eve ii libcanberra0 0.24-1 a simple abstract interface for pl ii libdbus-1-3 1.2.24-1 simple interprocess messaging syst ii libdbus-glib-1-2 0.86-1 simple interprocess messaging syst ii libdevkit-power-gobject 1:0.9.4-2 abstraction for power management - ii libfontconfig1 2.8.0-2.1 generic font configuration library ii libfreetype6 2.3.11-1 FreeType 2 font engine, shared lib ii libgconf2-4 2.28.1-3 GNOME configuration database syste ii libglib2.0-0 2.24.1-1 The GLib library of C routines ii libgnome2-0 2.30.0-1 The GNOME library - runtime files ii libgnomecanvas2-0 2.30.1-1 A powerful object-oriented display ii libgtk2.0-0 2.20.1-1 The GTK+ graphical user interface ii liborbit2 1:2.14.18-0.1 libraries for ORBit2 - a CORBA ORB ii libpam-modules 1.1.1-3 Pluggable Authentication Modules f ii libpam-runtime 1.1.1-3 Runtime support for the PAM librar ii libpam0g 1.1.1-3 Pluggable Authentication Modules l ii libpanel-applet2-0 2.30.2-1 library for GNOME Panel applets ii libpango1.0-0 1.28.1-1 Layout and rendering of internatio ii libpolkit-gobject-1-0 0.96-2 PolicyKit Authorization API ii libpolkit-gtk-1-0 0.96-2 PolicyKit GTK+ API ii libpopt0 1.16-1 lib for parsing cmdline parameters ii librsvg2-common 2.26.3-1 SAX-based renderer library for SVG ii libselinux1 2.0.94-1 SELinux runtime shared libraries ii libwrap0 7.6.q-19 Wietse Venema's TCP wrappers libra ii libx11-6 2:1.3.3-3 X11 client-side library ii libxau6 1:1.0.5-2 X11 authorisation library ii libxdmcp6 1:1.0.3-2 X11 Display Manager Control Protoc ii libxklavier16 5.0-2 X Keyboard Extension high-level AP ii libxml2 2.7.7.dfsg-4 GNOME XML library ii lsb-base 3.2-23.1 Linux Standard Base 3.2 init scrip ii metacity [x-window-mana 1:2.30.1-2 lightweight GTK+ window manager ii mutter [x-window-manage 2.29.0-2 lightweight GTK+ window manager ii policykit-1-gnome 0.96-2 GNOME authentication agent for Pol ii upower 0.9.4-2 abstraction for power management ii xterm [x-terminal-emula 261-1 X terminal emulator ii zlib1g 1:1.2.3.4.dfsg-3 compression library - runtime Versions of packages gdm3 recommends: pn at-spi <none> (no description available) ii gnome-icon-theme 2.30.3-1 GNOME Desktop icon theme ii gnome-power-manager 2.30.1-1 power management tool for the GNOM ii gnome-settings-daemon 2.30.1-1 daemon handling the GNOME session ii xserver-xephyr 2:1.7.7-2 nested X server ii xserver-xorg 1:7.5+6 the X.Org X server ii zenity 2.30.0-1 Display graphical dialog boxes fro Versions of packages gdm3 suggests: pn gnome-mag <none> (no description available) pn gnome-orca <none> (no description available) pn gok <none> (no description available) ii libpam-gnome-keyring 2.30.1-2 PAM module to unlock the GNOME key ii metacity 1:2.30.1-2 lightweight GTK+ window manager -- debconf information: * shared/default-x-display-manager: gdm3 gdm3/daemon_name: /usr/sbin/gdm3 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". 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