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A previous poster on the regular forums ( http://ubuntuforums.org/showthread.php?t=843991 ) said /var/log/daemon.log, but I don't seem to have such a file. Do I need to enable logging?

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4 Answers 4

Reset to default
41

The answers are now obsolete (2017), the logs are now here

journalctl -u NetworkManager

NOTE: this will display all NetworkManager's log since it has been installed. If you want to limit the amount of logs to the time the system has been booted instead, use the -b option: journalctl -b 0 -u NetworkManager.

See the man page of journalctl(1) for further options and filters.

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  • 8
    journalctl -f -u NetworkManager is better to following logs
    – Sergey Ponomarev
    Jun 21, 2018 at 18:27
  • If you see --No Entries--- You may install it first!
    – محسن عباسی
    Nov 20, 2022 at 12:14
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You can find the Network Manager logs in /var/log/syslog, which acts as a catch-all for log messages (unless you have changed rsyslog's default configuration).

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  • Try setting log to "info" first: sudo dbus-send --system --print-reply --dest=org.freedesktop.NetworkManager /org/freedesktop/NetworkManager org.freedesktop.NetworkManager.SetLogging string:"info" string:"" (from live.gnome.org/NetworkManager/Debugging)
    – Savvas Radevic
    Jan 27, 2012 at 10:30
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To reiterate Where are NetworkManager log files located for the network-manager package:

From the man pages:

man NetworkManager

  --log-domains=<domain1>,<domain2>, ...
         Sets which operations are logged to the log destination (usually syslog).   By  default,
         most  domains  are  logging-enabled.  See NetworkManager.conf(5) for more information on
         log levels and domains.
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If you're using Ubuntu 16.04 or later, 

journalctl /usr/sbin/NetworkManager

should show all the NetworkManager logs.

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