Bug#583498: gdm_slave_xioerror_handler: Fatal X error - Restarting :0

[Thiemo Nagel]

Package: gdm
Version: 2.20.10-3
Severity: normal

approx. 5 minutes after coming up from suspend, X crashed. Digging through
the logs, I've found the following:

May 26 19:30:47 eee gdm[1663]: WARNING: gdm_slave_xioerror_handler: Fatal X error - Restarting :0
May 26 19:30:50 eee acpid: client 1667[0:0] has disconnected
May 26 19:30:50 eee acpid: client connected from 9974[0:0]
May 26 19:30:50 eee acpid: 1 client rule loaded
May 26 19:31:13 eee acpid: client 9974[0:0] has disconnected

Restarting of X resulted in a hang (blank screen and all, I had to resort to
SysRq keys to shut down the system). See Xorg.0.log.old for the log of the
old X that was restarted by gdm and Xorg.0.log for the new X that failed to
start.


-- System Information:
Debian Release: squeeze/sid
APT prefers testing
APT policy: (990, 'testing'), (500, 'proposed-updates'), (500, 'oldstable-proposed-updates'), (500, 'oldstable'), (500, 'stable'), (300, 'unstable'), (150, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.32-5-686 (SMP w/2 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages gdm 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 gksu 2.0.2-2+b1 graphical frontend to su
ii gnome-session [x-session-ma 2.30.0-1 The GNOME Session Manager - GNOME
ii gnome-terminal [x-terminal- 2.30.1-1 The GNOME terminal emulator applic
ii kde-window-manager [x-windo 4:4.4.3-1 the KDE 4 window manager (KWin)
ii konsole [x-terminal-emulato 4:4.4.3-1 X terminal emulator for KDE 4
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 1:2.4.44-1 Extended attribute shared library
ii libc6 2.10.2-9 Embedded GNU C Library: Shared lib
ii libcairo2 1.8.10-4 The Cairo 2D vector graphics libra
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 libdmx1 1:1.1.0-2 X11 Distributed Multihead extensio
ii libfontconfig1 2.8.0-2.1 generic font configuration library
ii libfreetype6 2.3.11-1 FreeType 2 font engine, shared lib
ii libglade2-0 1:2.6.4-1 library to load .glade files at ru
ii libglib2.0-0 2.24.1-1 The GLib library of C routines
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 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 libpango1.0-0 1.28.0-1 Layout and rendering of internatio
ii librsvg2-2 2.26.3-1 SAX-based renderer library for SVG
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-18 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 libxext6 2:1.1.1-3 X11 miscellaneous extension librar
ii libxi6 2:1.3-4 X11 Input extension library
ii libxinerama1 2:1.1-3 X11 Xinerama extension library
ii libxml2 2.7.7.dfsg-2 GNOME XML library
ii lsb-base 3.2-23.1 Linux Standard Base 3.2 init scrip
ii metacity [x-window-manager] 1:2.30.1-1 lightweight GTK+ window manager
ii twm [x-window-manager] 1:1.0.4-2 Tab window manager
ii xterm [x-terminal-emulator] 258-1 X terminal emulator

Versions of packages gdm recommends:
ii gdm-themes 0.6.2 Themes for the GNOME Display Manag
ii whiptail 0.52.10-8 Displays user-friendly dialog boxe
pn xserver-xephyr | xnest <none> (no description available)
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 gdm suggests:
ii libpam-gnome-keyring 2.30.1-2 PAM module to unlock the GNOME key
ii locales 2.10.2-9 Embedded GNU C Library: National L
ii pm-utils 1.3.0-1 utilities and scripts for power ma

-- Configuration Files:
/etc/gdm/gdm.conf changed:
[daemon]
[security]
RelaxPermissions=0
[xdmcp]
[gui]
[greeter]
GraphicalTheme=blueswirl
Browser=false
GraphicalThemeRand=true
GraphicalThemes=blueswirl/:happygnome/:crystal
[chooser]
[debug]
[servers]


-- debconf information:
gdm/daemon_name: /usr/sbin/gdm
* shared/default-x-display-manager: gdm

[Josselin Mouette]

Post by Thiemo Nagel
approx. 5 minutes after coming up from suspend, X crashed. Digging through
May 26 19:30:47 eee gdm[1663]: WARNING: gdm_slave_xioerror_handler: Fatal X error - Restarting :0
May 26 19:30:50 eee acpid: client 1667[0:0] has disconnected
May 26 19:30:50 eee acpid: client connected from 9974[0:0]
May 26 19:30:50 eee acpid: 1 client rule loaded
May 26 19:31:13 eee acpid: client 9974[0:0] has disconnected
Restarting of X resulted in a hang (blank screen and all, I had to resort to
SysRq keys to shut down the system). See Xorg.0.log.old for the log of the
old X that was restarted by gdm and Xorg.0.log for the new X that failed to
start.

Do you have any "vga=" stuff in your kernel command line? That would
explain such craches with KMS.

Cheers,
--
.''`. Josselin Mouette
: :' :
`. `' “A handshake with whitnesses is the same
`- as a signed contact.” -- Jörg Schilling

[Thiemo Nagel]

Post by Josselin Mouette
Do you have any "vga=" stuff in your kernel command line? That would
explain such craches with KMS.

Indeed, I have vga=6 on the kernel command line.

Why is that a problem?

Cheers, Thiemo

[Thiemo Nagel]

Post by Thiemo Nagel

Post by Josselin Mouette
Do you have any "vga=" stuff in your kernel command line? That would
explain such craches with KMS.

Indeed, I have vga=6 on the kernel command line.
Why is that a problem?

Because it conflicts with the X driver’s handling of the framebuffer.
Ask the X or kernel people for the details.

I'll try without and report back if I see the problem again.

Thanks, Thiemo