Ubuntu Wiki

This page lists some helpful steps when filing an ltsp bug

• It is very helpful if you include version numbers of the ltsp (or ltspfs) packages in your bug report (see below how to get the right version numbers for the various packages).
• If you modified any defaults in your thin client chroot, please mention this.
• Did you change anything in your lts.conf file (until gutsy in /opt/ltsp/i386/etc/, later in /var/lib/tftpboot/ltsp/i386/), if so, please attach it.
• Architecture: x86 or amd64

Get the versions of the packages:

dpkg -l ltsp-server
dpkg -l ltsp-server-standalone
dpkg -l --root=/opt/ltsp/i386 ldm
dpkg -l --root=/opt/ltsp/i386 ltsp-client
dpkg -l --root=/opt/ltsp/i386 ltsp-client-core # gutsy only

Is your bug related to local devices:

dpkg -l ltspfs
dpkg -l --root=/opt/ltsp/i386 ltspfsd

Debugging speed problems

Debugging tools

These tools you could use to monitor some speed problems, so you could find the bottlenecks:

• LatencyTop (http://www.latencytop.org/); This tools monitors on what actions give the most latency in a process

• SystemTap (http://sourceware.org/systemtap/) (aptitude install systemtap); Very flexible/scriptable diagnostics tool

• xrestop (http://freedesktop.org/wiki/Software/xrestop) (aptitude install xrestop); Gives a top like interface on the processes which uses the most X-resources

• Cacti with snmpd (http://www.cacti.net/) (aptitude install cacti snmpd snmp); For monitoring system and network usage. Needs some work to setup

• Munin (http://munin.projects.linpro.no/) (aptitude install munin); Also for monitoring system and network usage. Easy to setup.

• Darkstat (http://dmr.ath.cx/net/darkstat/) (aptitude install darkstat); For network traffic monitoring per port.

Configuration check

These things you need to check if they are working correctly on your system:

Bugs not directly with LTSP, but affect LTSP environments

• Policykit not allowing remote sessions (Both ssh -X that ltsp uses, and NX sessions) to access admin functionality:

https://bugs.launchpad.net/ubuntu/+source/policykit/+bug/221363

Orphane processes

• gvfs-fuse sessions hanging around: https://bugs.edge.launchpad.net/ubuntu/+source/gvfs/+bug/252796

• gconfd-2 hanging around: https://bugs.launchpad.net/ubuntu/+source/gconf2/+bug/269541

• LNS watchdog.txt from a school site that contains syslog info from gnome-watchdog

CategoryBugSquad CategoryDebugging