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#1 2011-08-13 14:54:52

siriusb
Member
From: Hungary
Registered: 2010-01-01
Posts: 414

NetworkManager drops wired connection

In the last few weeks I often realize that I have no internet connection. nm-applet shows no defined connection however in /etc/NetworkManager/system-connections I have three of them. After restarting networmanager it shows twice the same adsl connection in the list. It still can't connect to internet and I have to restart my modem to have a working connection again.

I have no router, only an ADSL modem.

I didn't find any recent bug, people have problem with wireless and not wired connection. You can find the relevant entries from log files below.
Is it a networkmanager problem or hardware issue. Should I replace my ADSL modem?


messages.log

Aug 13 15:34:09 localhost pppd[3393]: No response to 3 echo-requests
Aug 13 15:34:09 localhost pppd[3393]: Serial link appears to be disconnected.
Aug 13 15:34:09 localhost pppd[3393]: Connect time 409.1 minutes.
Aug 13 15:34:09 localhost pppd[3393]: Sent 287062637 bytes, received 857592671 bytes.
Aug 13 15:34:15 localhost pppd[3393]: Connection terminated.
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): device state change: activated -> failed (reason 'ppp-disconnect') [100 120 13]
Aug 13 15:34:15 localhost NetworkManager[2390]: <warn> Activation (eth0) failed.
Aug 13 15:34:15 localhost dbus[891]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): now unmanaged
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): device state change: failed -> unmanaged (reason 'removed') [120 10 36]
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): deactivating device (reason: 36).
Aug 13 15:34:15 localhost pppd[3393]: Modem hangup
Aug 13 15:34:15 localhost pppd[3393]: Exit.
Aug 13 15:34:15 localhost NetworkManager[2390]: <warn> could not read ppp stats: No such device
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): cleaning up...
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): taking down device.
Aug 13 15:34:15 localhost kernel: [27224.067541] sky2 0000:03:00.0: eth0: disabling interface
Aug 13 15:34:15 localhost dbus[891]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'

everything.log:

Aug 13 15:34:09 localhost pppd[3393]: No response to 3 echo-requests
Aug 13 15:34:09 localhost pppd[3393]: Serial link appears to be disconnected.
Aug 13 15:34:09 localhost pppd[3393]: Connect time 409.1 minutes.
Aug 13 15:34:09 localhost pppd[3393]: Sent 287062637 bytes, received 857592671 bytes.
Aug 13 15:34:15 localhost pppd[3393]: Connection terminated.
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): device state change: activated -> failed (reason 'ppp-disconnect') [100 120 13]
Aug 13 15:34:15 localhost NetworkManager[2390]: <warn> Activation (eth0) failed.
Aug 13 15:34:15 localhost dbus[891]: [system] Activating service name='org.freedesktop.nm_dispatcher' (using servicehelper)
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): now unmanaged
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): device state change: failed -> unmanaged (reason 'removed') [120 10 36]
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): deactivating device (reason: 36).
Aug 13 15:34:15 localhost pppd[3393]: Modem hangup
Aug 13 15:34:15 localhost pppd[3393]: Exit.
Aug 13 15:34:15 localhost NetworkManager[2390]: <warn> could not read ppp stats: No such device
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): cleaning up...
Aug 13 15:34:15 localhost NetworkManager[2390]: <info> (eth0): taking down device.
Aug 13 15:34:15 localhost kernel: [27224.067541] sky2 0000:03:00.0: eth0: disabling interface
Aug 13 15:34:15 localhost dbus[891]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'

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#2 2011-08-13 18:58:09

livinglifeback
Member
Registered: 2009-10-24
Posts: 29

Re: NetworkManager drops wired connection

Before you replace your modem try using a different manager like wicd.  I had similar issues with both wired and wireless while using network manager when i switched to wicd they went away.

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#3 2011-08-13 19:02:04

siriusb
Member
From: Hungary
Registered: 2010-01-01
Posts: 414

Re: NetworkManager drops wired connection

It's exactly what is on my mind, but I thought I would try to investigate this issue before abandon networkmanager without any effort on my part to find the root of this problem.

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