Telepathy debugging

Enabling .xsession

This page explains how to enable Telepathy debug output on your XO. If you haven't already seen Attaching Sugar Logs to Tickets, see that page first.

• First you need to enable your /home/olpc/.xsession file

 cp /home/olpc/.xsession-example /home/olpc/.xsession

• Then edit .xsession and uncomment the lines about GABBLE_DEBUG, GABBLE_LOGFILE, SALUT_DEBUG and SALUT_LOGFILE
• For debugging lower level problems in the Telepathy connection managers, enable LM_DEBUG (for telepathy-gabble) or GIBBER_DEBUG (for telepathy-salut). Note that these will produce much bigger log files.
• reboot

Telepathy log files are now available at /home/olpc/.sugar/default/logs/telepathy-gabble.log and /home/olpc/.sugar/default/logs/telepathy-salut.log . Be sure to attach these files if you submit a ticket about a Telepathy issue.

Capturing core files

Core files are produced when a program crashes and contain useful debugging information.

As root:

 echo /tmp/core-%p-%e > /proc/sys/kernel/core_pattern

This tells the kernel to put core files into the /tmp directory.

To make this persist across reboots, add the following line to /etc/sysctl.conf:

 kernel.core_pattern = /tmp/core-%p-%e

Add the following line to /home/olpc/.xsession:

 ulimit -c unlimited

This turns off any limit on core file size.