On Tue 30 Jan 2018 at 14:08:10 -0500, Thomas George wrote: > Starting last week the PC Ethernet connection is sometimes not made at > bootup or is occasionally lost. When this happens the only way I have found > to re-establish the connection is to turn the router off and on again.
Problems which occur "sometimes" or "occasionally" can be amongst the most intractable to diagnose. Add in a possible flaky router or internet connection and there are hours of endless fun ahead! > The system is Debian Stretch. I run apt-get update and apt-get dist-upgrade > occasionally and this problem may have started after such an upgrade. Unlikely. (But you have logs to tell you whether anything related to networking was updated). > I use to be very familiar with setting /etc/network/interfaces for eth0 as > either a static or dhcp connection and using ifconfig, ifdown eth0 and ifup > eth0 but overtime this became unnecessary as the system automatically made > the ethernet connection. Now with Stretch and the dist-upgrades all this has > changed. Ifconfig now shows the connection as epn3s0 and Wicd Network > Manager has been installed. ifupdown also makes ethernet connections automatically. It all depends on what your needs are whether it is a network management program you wish to use. > When the Ethernet connection is lost Wicd cannot restore it. The Ethernet > cable connection light on so the wired connection is not lost. Still the > only way I have found to restore the system connection to turn off and > restart the router. > > Clearly I am very out of date with system changes and need to catch up. Any > suggestions as to where to start? I would purge wicd and any other network management programs from the system, apart from ifupdown and isc-dhcp-client. Comment out all lines in /etc/network/interfaces and have just allow-hotplug epn3s0 iface epn3s0 inet dhcp Reboot and monitor. -- Brian.
