Hello,
For your information, I do not use the TwinView feature for DualHead of
the nvidia driver (which essentially implements some Xinerama), but
instead the basic way of X11 using one server and one x-screen per real
screen. These screens are completely separate.
Then I fail to see how it can't be reproducible with another driver.
Tell me of a driver which can product two X screens on one server and
I'll try. I've just never seen some other driver for hardware I posess.
Anyway, I am running Debian/testing as of today, 2010-01-11. The crash
has been there for at least a few days, although I have no idea when it
appeared.
What was updated during that few days? (not xfdesktop4, that's for sure)
grep "install xf" /var/log/dpkg.log* [after gunzip] tells me:
xfce-keyboard-shortcuts in November, xfce4-clipman in October. A few
more in September. Nothing affecting X11 since November.
I don't know how to get a backtrace, do you have some howto?
http://wiki.debian.org/HowToGetABacktrace + some help from google about
the X window system error.
I do not know where xfdesktop4 is started or how to start it manually
inside gdb, so this information is helpful but not useful to me.
Then attach it using gdb -p ?
I attached three sessions with gdb, but it didn't work.
First one is complete, the others look the same in the beginning.
Which dbg-packages do I actually need? I only installed xfdesktop4-dbg.
If you can help me getting a backtrace I am willing to help, but I
cannot provide you with further information right now.
Everything is in the wiki page I gave.
Best Regards
ba...@notizbuch:~$ gdb -p `pidof xfdesktop`
GNU gdb (GDB) 7.0-debian
Copyright (C) 2009 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Attaching to process 12457
Reading symbols from /usr/bin/xfdesktop...Reading symbols from
/usr/lib/debug/usr/bin/xfdesktop...done.
(no debugging symbols found)...done.
Reading symbols from /usr/lib/libX11.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libX11.so.6
Reading symbols from /usr/lib/libxfcegui4.so.4...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxfcegui4.so.4
Reading symbols from /usr/lib/libwnck-1.so.22...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libwnck-1.so.22
Reading symbols from /usr/lib/libxfconf-0.so.2...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxfconf-0.so.2
Reading symbols from /usr/lib/libthunar-vfs-1.so.2...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libthunar-vfs-1.so.2
Reading symbols from /usr/lib/libexo-0.3.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libexo-0.3.so.0
Reading symbols from /usr/lib/libgthread-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgthread-2.0.so.0
Reading symbols from /usr/lib/libxfce4util.so.4...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxfce4util.so.4
Reading symbols from /usr/lib/libthunarx-1.so.2...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libthunarx-1.so.2
Reading symbols from /usr/lib/libgtk-x11-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgtk-x11-2.0.so.0
Reading symbols from /usr/lib/libgdk-x11-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgdk-x11-2.0.so.0
Reading symbols from /usr/lib/libgdk_pixbuf-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgdk_pixbuf-2.0.so.0
Reading symbols from /usr/lib/libcairo.so.2...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libcairo.so.2
Reading symbols from /usr/lib/libpango-1.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpango-1.0.so.0
Reading symbols from /usr/lib/libgmodule-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgmodule-2.0.so.0
Reading symbols from /usr/lib/libdbus-glib-1.so.2...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libdbus-glib-1.so.2
Reading symbols from /lib/libdbus-1.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib/libdbus-1.so.3
Reading symbols from /usr/lib/libgobject-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgobject-2.0.so.0
Reading symbols from /lib/libglib-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /lib/libglib-2.0.so.0
Reading symbols from /lib/libpthread.so.0...Reading symbols from
/usr/lib/debug/lib/libpthread-2.10.2.so...done.
[Thread debugging using libthread_db enabled]
(no debugging symbols found)...done.
Loaded symbols for /lib/libpthread.so.0
Reading symbols from /lib/libc.so.6...Reading symbols from
/usr/lib/debug/lib/libc-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /usr/lib/libxcb.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libxcb.so.1
Reading symbols from /lib/libdl.so.2...Reading symbols from
/usr/lib/debug/lib/libdl-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/libdl.so.2
Reading symbols from /usr/lib/libatk-1.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libatk-1.0.so.0
Reading symbols from /usr/lib/libpangoft2-1.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpangoft2-1.0.so.0
Reading symbols from /lib/libm.so.6...Reading symbols from
/usr/lib/debug/lib/libm-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/libm.so.6
Reading symbols from /usr/lib/libpangocairo-1.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpangocairo-1.0.so.0
Reading symbols from /usr/lib/libgio-2.0.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgio-2.0.so.0
Reading symbols from /usr/lib/libfreetype.so.6...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libfreetype.so.6
Reading symbols from /usr/lib/libz.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libz.so.1
Reading symbols from /usr/lib/libfontconfig.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libfontconfig.so.1
Reading symbols from /usr/lib/libSM.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libSM.so.6
Reading symbols from /usr/lib/libICE.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libICE.so.6
Reading symbols from /usr/lib/libstartup-notification-1.so.0...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib/libstartup-notification-1.so.0
Reading symbols from /usr/lib/libXRes.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXRes.so.1
Reading symbols from /lib/librt.so.1...Reading symbols from
/usr/lib/debug/lib/librt-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/librt.so.1
Reading symbols from /usr/lib/libfam.so.0...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libfam.so.0
Reading symbols from /usr/lib/libjpeg.so.62...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libjpeg.so.62
Reading symbols from /usr/lib/libpng12.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpng12.so.0
Reading symbols from /usr/lib/libexo-hal-0.3.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libexo-hal-0.3.so.0
Reading symbols from /usr/lib/libhal-storage.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libhal-storage.so.1
Reading symbols from /usr/lib/libhal.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libhal.so.1
Reading symbols from /lib/libpcre.so.3...(no debugging symbols found)...done.
Loaded symbols for /lib/libpcre.so.3
Reading symbols from /usr/lib/libXcomposite.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXcomposite.so.1
Reading symbols from /usr/lib/libXdamage.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXdamage.so.1
Reading symbols from /usr/lib/libXfixes.so.3...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXfixes.so.3
Reading symbols from /usr/lib/libXext.so.6...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXext.so.6
Reading symbols from /usr/lib/libXrender.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXrender.so.1
Reading symbols from /usr/lib/libXinerama.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXinerama.so.1
Reading symbols from /usr/lib/libXi.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXi.so.6
Reading symbols from /usr/lib/libXrandr.so.2...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXrandr.so.2
Reading symbols from /usr/lib/libXcursor.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXcursor.so.1
Reading symbols from /usr/lib/libpixman-1.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libpixman-1.so.0
Reading symbols from /usr/lib/libdirectfb-1.2.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libdirectfb-1.2.so.0
Reading symbols from /usr/lib/libfusion-1.2.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libfusion-1.2.so.0
Reading symbols from /usr/lib/libdirect-1.2.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libdirect-1.2.so.0
Reading symbols from /usr/lib/libxcb-render-util.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxcb-render-util.so.0
Reading symbols from /usr/lib/libxcb-render.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxcb-render.so.0
Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from
/usr/lib/debug/lib/ld-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib64/ld-linux-x86-64.so.2
Reading symbols from /usr/lib/libXau.so.6...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libXau.so.6
Reading symbols from /usr/lib/libXdmcp.so.6...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libXdmcp.so.6
Reading symbols from /lib/libresolv.so.2...Reading symbols from
/usr/lib/debug/lib/libresolv-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/libresolv.so.2
Reading symbols from /lib/libselinux.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libselinux.so.1
Reading symbols from /usr/lib/libexpat.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libexpat.so.1
Reading symbols from /lib/libuuid.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libuuid.so.1
Reading symbols from /usr/lib/libxcb-aux.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxcb-aux.so.0
Reading symbols from /usr/lib/libxcb-event.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxcb-event.so.1
Reading symbols from /usr/lib/libxcb-atom.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxcb-atom.so.1
Reading symbols from /lib/libnss_compat.so.2...Reading symbols from
/usr/lib/debug/lib/libnss_compat-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/libnss_compat.so.2
Reading symbols from /lib/libnsl.so.1...Reading symbols from
/usr/lib/debug/lib/libnsl-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libnss_nis.so.2...Reading symbols from
/usr/lib/debug/lib/libnss_nis-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/libnss_nis.so.2
Reading symbols from /lib/libnss_files.so.2...Reading symbols from
/usr/lib/debug/lib/libnss_files-2.10.2.so...done.
(no debugging symbols found)...done.
Loaded symbols for /lib/libnss_files.so.2
Reading symbols from /usr/lib/gtk-2.0/2.10.0/engines/libxfce.so...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib/gtk-2.0/2.10.0/engines/libxfce.so
Reading symbols from
/usr/lib/gtk-2.0/2.10.0/loaders/libpixbufloader-png.so...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/gtk-2.0/2.10.0/loaders/libpixbufloader-png.so
Reading symbols from /usr/lib/thunarx-1/thunar-archive-plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/thunarx-1/thunar-archive-plugin.so
Reading symbols from /usr/lib/thunarx-1/thunar-wallpaper-plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/thunarx-1/thunar-wallpaper-plugin.so
Reading symbols from /usr/lib/thunarx-1/thunar-uca.so...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/thunarx-1/thunar-uca.so
Reading symbols from /usr/lib/thunarx-1/thunar-apr.so...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/thunarx-1/thunar-apr.so
Reading symbols from /usr/lib/libexif.so.12...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libexif.so.12
Reading symbols from /usr/lib/thunarx-1/thunar-media-tags-plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/thunarx-1/thunar-media-tags-plugin.so
Reading symbols from /usr/lib/libtag.so.1...(no debugging symbols found)...done.
Loaded symbols for /usr/lib/libtag.so.1
Reading symbols from /usr/lib/libtag_c.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libtag_c.so.0
Reading symbols from /usr/lib/libstdc++.so.6...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libstdc++.so.6
Reading symbols from /lib/libgcc_s.so.1...(no debugging symbols found)...done.
Loaded symbols for /lib/libgcc_s.so.1
Reading symbols from /usr/lib/gio/modules/libgvfsdbus.so...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib/gio/modules/libgvfsdbus.so
Reading symbols from /usr/lib/gvfs/libgvfscommon.so...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/gvfs/libgvfscommon.so
Reading symbols from /lib/libudev.so.0...(no debugging symbols found)...done.
Loaded symbols for /lib/libudev.so.0
Reading symbols from /usr/lib/gio/modules/libgioremote-volume-monitor.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/gio/modules/libgioremote-volume-monitor.so
Reading symbols from /usr/lib/gtk-2.0/2.10.0/loaders/svg_loader.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/gtk-2.0/2.10.0/loaders/svg_loader.so
Reading symbols from /usr/lib/librsvg-2.so.2...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/librsvg-2.so.2
Reading symbols from /usr/lib/libgsf-1.so.114...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgsf-1.so.114
Reading symbols from /usr/lib/libcroco-0.6.so.3...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libcroco-0.6.so.3
Reading symbols from /usr/lib/libxml2.so.2...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxml2.so.2
Reading symbols from /lib/libbz2.so.1.0...(no debugging symbols found)...done.
Loaded symbols for /lib/libbz2.so.1.0
Reading symbols from /usr/lib/pango/1.6.0/modules/pango-basic-fc.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/pango/1.6.0/modules/pango-basic-fc.so
Reading symbols from /usr/lib/xfce4/modules/xfce4_desktop_menu.so...Reading
symbols from /usr/lib/debug/usr/lib/xfce4/modules/xfce4_desktop_menu.so...done.
(no debugging symbols found)...done.
Loaded symbols for /usr/lib/xfce4/modules/xfce4_desktop_menu.so
Reading symbols from /usr/lib/libxfce4menu-0.1.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libxfce4menu-0.1.so.0
0x00007f5e336a9743 in *__GI___poll (fds=<value optimized out>, nfds=<value
optimized out>, timeout=5000)
at ../sysdeps/unix/sysv/linux/poll.c:87
87 ../sysdeps/unix/sysv/linux/poll.c: Datei oder Verzeichnis nicht
gefunden.
in ../sysdeps/unix/sysv/linux/poll.c
(gdb) c
Continuing.
<<<<<<<<<<<<<<<<<<<<<<<< Here I crash the program.
Program exited with code 01.
(gdb) bt
No stack.
(gdb) ...same as in session 1...
Loaded symbols for /usr/lib/libxfce4menu-0.1.so.0
0x00007faa169b6743 in *__GI___poll (fds=<value optimized out>, nfds=<value
optimized out>, timeout=5000)
at ../sysdeps/unix/sysv/linux/poll.c:87
87 ../sysdeps/unix/sysv/linux/poll.c: Datei oder Verzeichnis nicht
gefunden.
in ../sysdeps/unix/sysv/linux/poll.c
(gdb) break gdk_x_error
Function "gdk_x_error" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (gdk_x_error) pending.
(gdb) run --sync
The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: /usr/bin/xfdesktop --sync
[Thread debugging using libthread_db enabled]
xfdesktop[12688] is already running; assuming --reload
xfdesktop[12688]: starting up
Program exited normally.
(gdb) Loaded symbols for /usr/lib/libxfce4menu-0.1.so.0
0x00007fa8fbaaf743 in *__GI___poll (fds=<value optimized out>, nfds=<value
optimized out>, timeout=3377)
at ../sysdeps/unix/sysv/linux/poll.c:87
87 ../sysdeps/unix/sysv/linux/poll.c: Datei oder Verzeichnis nicht
gefunden.
in ../sysdeps/unix/sysv/linux/poll.c
(gdb) break gdk_x_error
Function "gdk_x_error" not defined.
Make breakpoint pending on future shared library load? (y or [n]) y
Breakpoint 1 (gdk_x_error) pending.
(gdb) c
Continuing.
Program exited with code 01.
(gdb)
