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Lord_Sunday123

Member

Registered: 2014-08-04

Posts: 37

NetworkManager randomly drops my ethernet connection

After a recent system upgrade, Network Manager drops my ethernet connection very randomly. There could be a couple hours or a couple minutes between drops, and its getting pretty annoying. I have googled, but I can't find anything that seems to be relevant to my problem.

The way I have to fix this is to unplug the cable, wait a couple seconds and plug it back in, or to turn off ethernet, wait a bit, and plug back in.

The logs (journalctl -f -u NetworkManager) shows no obvious errors, but I'll include it here anyways.

[root@avery avery]# journalctl -f -u NetworkManager
-- Logs begin at Sun 2014-08-03 00:42:12 EDT. --
Aug 28 02:46:27 avery NetworkManager[2834]: <info> Activation (enp7s0) Stage 3 of 5 (IP Configure Start) started...
Aug 28 02:46:27 avery NetworkManager[2834]: <info> (enp7s0): device state change: config -> ip-config (reason 'none') [50 70 0]
Aug 28 02:46:27 avery NetworkManager[2834]: <info> Activation (enp7s0) Beginning DHCPv4 transaction (timeout in 45 seconds)
Aug 28 02:46:27 avery NetworkManager[2834]: <info> dhcpcd started with pid 3241
Aug 28 02:46:27 avery NetworkManager[2834]: <info> Activation (enp7s0) Stage 3 of 5 (IP Configure Start) complete.
Aug 28 02:46:27 avery NetworkManager[2834]: <info> (enp7s0): DHCPv4 client pid 3241 exited with status 0
Aug 28 02:46:27 avery NetworkManager[2834]: <info> Activation (enp7s0) Stage 4 of 5 (IPv4 Configure Timeout) scheduled...
Aug 28 02:46:27 avery NetworkManager[2834]: <info> Activation (enp7s0) Stage 4 of 5 (IPv4 Configure Timeout) started...
Aug 28 02:46:27 avery NetworkManager[2834]: <info> Activation (enp7s0) Stage 4 of 5 (IPv4 Configure Timeout) complete.
Aug 28 02:46:27 avery NetworkManager[2834]: dhcpcd[3241]: sending commands to master dhcpcd process

The log for dhcpcd also shows no obvious error:

[root@avery avery]# journalctl -f -u dhcpcd
-- Logs begin at Sun 2014-08-03 00:42:12 EDT. --
Aug 28 02:46:28 avery dhcpcd[3117]: enp7s0: rebinding lease of 192.168.1.68
Aug 28 02:46:28 avery dhcpcd[3117]: enp7s0: soliciting an IPv6 router
Aug 28 02:46:33 avery dhcpcd[3117]: enp7s0: leased 192.168.1.68 for 86400 seconds
Aug 28 02:46:33 avery dhcpcd[3117]: enp7s0: adding route to 192.168.1.0/24
Aug 28 02:46:33 avery dhcpcd[3117]: enp7s0: adding default route via 192.168.1.254
Aug 28 02:46:33 avery dhcpcd[3117]: wlp1s0: adding route to 192.168.1.0/24
Aug 28 02:46:33 avery dhcpcd[3117]: wlp1s0: adding default route via 192.168.1.254
Aug 28 02:46:33 avery dhcpcd[3117]: wlp1s0: removing route to 192.168.1.0/24
Aug 28 02:46:33 avery dhcpcd[3117]: wlp1s0: removing default route via 192.168.1.254
Aug 28 02:46:40 avery dhcpcd[3117]: enp7s0: no IPv6 Routers available

This is really annoying and I'm not entirely sure to where start. Also, if dhcpcd isn't supposed to be active, that might be because I activated it so that I could use the ethernet cable.

Any help, ideas or feedback would be wonderful, thanks!

Lord_Sunday123

Member

Registered: 2014-08-04

Posts: 37

Re: NetworkManager randomly drops my ethernet connection

I messed around in the settings a bit and it *may* be working now. Won't know for sure until tomorrow when I can play TF2 for 3 hours straight

EDIT: Nope, definitely not fixed, I think its just defaulting to dhcpcd now, because wifi doesnt work, and its a very crude setup -.-

Last edited by Lord_Sunday123 (2014-08-28 07:21:01)