You can use the launch-prefix attribute of a specific node that you
wish to debug:

http://www.ros.org/wiki/roslaunch/XML/node
http://www.ros.org/wiki/roslaunch/Tutorials/Roslaunch%20Nodes%20in%20Valgrind%20or%20GDB

On Mon, Nov 22, 2010 at 9:24 AM, Andreas Baldinger
<e0929191@student.tuwien.ac.at> wrote:
> How can I use gdb and roslaunch together and get a backtrace?
> My launch-command is:
>
>        roslaunch robotcontrol exercise01.launch rc:=1
>
> The only way I know to use gdb is: $ gdb [filename]
>
>
> On 2010-11-22 16:19, Brian Gerkey wrote:
>> Looks like stageros is segfaulting (hence the -11 exit code).  Can you
>> run it in gdb and post a backtrace?
>>On Mon, Nov 22, 2010 at 7:05 AM, Andreas Baldinger
>> <e0929191@student.tuwien.ac.at> wrote:
>> > Thank you for your help, but that didnīt help at all.
>> > I still get the Error:
>> >
>> > XRequest.137: BadWindow (invalid Window parameter) 0x4e00004
>> > [stageros-2] process has died [pid 4294, exit code -11].
>> >
>> > I tried to remove my xserver-xorg and install it again, but that didnīt
>> > help either.
>> > The problem is I am new to linux (4weeks+) and canīt really determine
>> from
>> > where the error is coming.
>> > I mean what is an XRequest.137? Couldnīt find any information on this
>> > either.
>> > And how come that it worked a week ago and now its jammed?
>> >
>> > Greetings,
>> > --
>> > Andreas Baldinger
>> > MatrNr.: 0929191
>> > Student Automatisierungstechnik
>> > TU Wien
>> >
>> >
>> > On 2010-11-21 23:52, Kevin Watts wrote:
>> >> Andreas-
>> >> $ export STAGEPATH=/etc/X11
>> >>Kevin
>> >>On Sun, Nov 21, 2010 at 8:27 AM, Andreas Baldinger <
>> >> e0929191@student.tuwien.ac.at> wrote:
>> >>> Hello.
>> >> >
>> >> > A week ago stageros worked perfectly. Now I tried to start again
>> and I
>> >> > always get the same error:
>> >> >
>> >> > [ INFO] [1290356178.217601386]: Starting program...
>> >> > [ INFO] [1290356178.217768326]: Waiting for sensor data...
>> >> > XRequest.137: BadWindow (invalid Window parameter) 0x5400004
>> >> > [stageros-2] process has died [pid 16149, exit code -11].
>> >> >
>> >> > The problem is I donīt really know what I changed in this week and I
>> >> > couldnīt find any useful information so far.
>> >> > The log-file contains:
>> >> >
>> >> > [roscpp_internal] [2010-11-21 17:16:18,316] [thread 0x7fe960960840]:
>> >> > [DEBUG] UDPROS server listening on port [51346]
>> >> > [roscpp_internal] [2010-11-21 17:16:18,322] [thread 0x7fe960960840]:
>> >> > [DEBUG] Started node [/stageros], pid [16149], bound on
>> [ndsnotebook],
>> >> > xmlrpc port [44758], tcpros port [54024], logging to
>> >> >
>> >> >
>> >>
>> [/home/andreasbaldinger/.ros/log/aba5a5f2-f58a-11df-bc8a-0024545bc34c/stageros-2.log],
>> >> > using   [real] time
>> >> > [roscpp_internal] [2010-11-21 17:16:18,342] [thread 0x7fe94d15c710]:
>> >> > [DEBUG] Accepted connection on socket [10], new socket [15]
>> >> > [roscpp_internal] [2010-11-21 17:16:18,342] [thread 0x7fe94d15c710]:
>> >> > [DEBUG] TCPROS received a connection from [127.0.1.1:34869]
>> >> > [roscpp_internal] [2010-11-21 17:16:18,342] [thread 0x7fe94d15c710]:
>> >> > [DEBUG] Connection: Creating TransportSubscriberLink for topic
>> >> [/rosout]
>> >> > connected to [callerid=[/rosout] address=[TCPROS connection to
>> >> > [127.0.1.1:34869 on socket 15]]]
>> >> >
>> >> > I figured the problem could be anything regarding my graphic card.
>> >> > I also installed a lot of updates (ubuntu update manager) and there
>> >> were
>> >> > also some ros-updates included.
>> >> >
>> >> > btw: Iīm using ubuntu 10.04 lucid on a Samsung R580 Hawk with a
>> NVIDIA
>> >> > GT330M.
>> >> >
>> >> > Has anyone else ever had such an error?
>> >> >
>> >> > Greetings,
>> >> > --
>> >> > Andreas Baldinger
>> >> > MatrNr.: 0929191
>> >> > Student Automatisierungstechnik
>> >> > TU Wien
>> >> > _______________________________________________
>> >> > ros-users mailing list
>> >> > ros-users@code.ros.org
>> >> > https://code.ros.org/mailman/listinfo/ros-users
>> >> >
>> >> _______________________________________________
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>> >> ros-users@code.ros.org
>> >> https://code.ros.org/mailman/listinfo/ros-users
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>> > ros-users@code.ros.org
>> > https://code.ros.org/mailman/listinfo/ros-users
>> >
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