While trying to catch a samba related bug, Steve Langasek pointed me to this NM bug. The screenshot shows the "nm-dispatcher.action: Caught signal 15, shutting down..." message.
Markus, your screenshot shows a network-manager error:
nm-dispatcher.action: Caught signal 15, shutting down...
This indicates that some part of NM is not being correctly guarded from /etc/init.d/sendsigs, resulting in abnormal termination that breaks the network connection before network filesystems are being unmounted. Network Manager has previously been fixed for such bugs, but it seems to have recurred.
While trying to catch a samba related bug, Steve Langasek pointed me to this NM bug. The screenshot shows the "nm-dispatcher. action: Caught signal 15, shutting down..." message.
Steve's comment (https:/ /bugs.launchpad .net/ubuntu/ +source/ samba/+ bug/211631/ comments/ 191):
Markus, your screenshot shows a network-manager error:
nm-dispatcher .action: Caught signal 15, shutting down...
This indicates that some part of NM is not being correctly guarded from /etc/init. d/sendsigs, resulting in abnormal termination that breaks the network connection before network filesystems are being unmounted. Network Manager has previously been fixed for such bugs, but it seems to have recurred.