Okay, what we need is to collect a full backtrace where each stacktrace has both local variable information and a proper function name. For this we're going to need debug symbols installed. Start by installing these packages (you mostly need the core package but it doesn't hurt to throw in all of them):
sudo apt-get -y install libc6-dbg xserver-xorg-core-dbg libgl1-mesa-dri- dbg libgl1-mesa-glx-dbg xserver-xorg-video-intel-dbg xserver-xorg-video- radeon-dbg xserver-xorg-video-ati-dbg libx11-6-dbg libice6-dbg And that, please add the ddebs repository to your /etc/apt/sources.list file (and run "apt-get update") as explained here: https://wiki.ubuntu.com/DebuggingProgramCrash Once you have ddebs repository correctly setup you should be able to install these packages: sudo apt-get -y install xserver-xorg-input-aiptek-dbgsym xserver-xorg-input-evdev-dbgsym xserver-xorg-input-mouse-dbgsym xserver-xorg-input-kbd-dbgsym Again, I think you probably just need the "xserver-xorg-input-aiptek-dbgsym" one but more debug symbols are always nice to have. Once you got the debug symbols installed you will be able to attach gdb to the X process and run "bt full" to see exactly what X is doing and the values of its variables and so forth. The best way to do this is to login to the buggy machine using ssh and attach gdb from there using "sudo gdb -p $(pidof X)" because once you freeze the X process for debugging all of X will be frozen. Once inside gdb, attached to X, just type "c" to let it continue running. Then you unplug the tablet so trigger the crash and instead of returning to GDM directly the debugger should switch back into "prompt mode" and at the "(gdb)" prompt just type "backtrace full" to see the full list of functions leading up to the crash. Please attach the full output of this "bt full" command to the bug report. More info on obtaining backtraces for X is available here: https://wiki.ubuntu.com/X/Backtracing PS. It would also be useful if you attached the files /var/log/Xorg.0.log and also /var/log/Xorg.0.log.old recorded just after the crash happened, plus also the output of "lspci -vvnn". -- Unplugging USB tablet crashes xserver (Jaunty) https://bugs.launchpad.net/bugs/355021 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-aiptek in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
