• Connecting to network after standby often fails

    Since some weeks I experience problems after resuming my laptop from standby:
    it takes a variable number of attempts to establish the Ethernet connection. It didn’t do that before, but I don’t know when exactly that behaviour started.

    I changed the switch port to which the device is connected, but without any improvement. Therefore I think it is not a switch problem, but device related.

    I don’t experience that behaviour on the other ubuntu-based machines in my network.

    What can I do to troubleshoot the problem?

    It is a Lenovo ThinkPad T61 with a “Intel Corporation 82566MM Gigabit Network Connection”.
    lspci -v shows

    00:19.0 Ethernet controller: Intel Corporation 82566MM Gigabit Network Connection (rev 03)
            Subsystem: Lenovo ThinkPad T61/R61
            Flags: bus master, fast devsel, latency 0, IRQ 32
            Memory at fe000000 (32-bit, non-prefetchable) [size=128K]
            Memory at fe025000 (32-bit, non-prefetchable) [size=4K]
            I/O ports at 1840 [size=32]
            Capabilities: <access denied>
            Kernel driver in use: e1000e
            Kernel modules: e1000e
  • @myscha would be interesting to get the journal:

    journalctl  --since "120 minutes ago" | curl -F [email protected] https://ptpb.pw/?u=1
  • @joekamprad
    I uploaded the journal here: https://ptpb.pw/2GS7

    It was a suspend/ resume shortly after a reboot. I removed the reboot journal.

  • Sep 06 19:37:36 t61 systemd[1]: suspend.target: Job suspend.target/start failed with result ‘dependency’.

    NetworkManager[367]: <info> [1504719465.4014] device (enp0s25): state change: unavailable -> disconnected (reason ‘carrier-changed’, internal state ‘managed’)

    Looks strange…

    can you try:

    sudo systemctl start [email protected]
    systemctl status [email protected]
  • @joekamprad said in Connecting to network after standby often fails:

    can you try:
    sudo systemctl start [email protected]

    This results in:
    Failed to start [email protected]: Unit [email protected] not found.

    dhclient is not installed on my machine, but dhcpcd.

  • my fault …

  • @joekamprad
    No problem. Do you have any more ideas what I could try?

fails34 connecting7 standby5 Posts 7Views 803
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