NetworkManager drops connection after last update 2020 feb 19

English Network/Internet
1

Update was 2020 feb 19, previous was ~feb 16.
NM tries to establish connection, then drops it.

Service “wicked” works well.

I use kernel from “Stable” repo: 5.5.4-2.1.g813d10d, previous was 5.5.4-1.g119f9ca.
All works well with kernel 5.5.4-1.g119f9ca.
Trying both kernels after update: same mistakes.

Enabling/disabling IPv6 didn’t helped.

Some output with dmesg:
trying to establish connection every 15 seconds, then fails.


   83.324589] r8169 0000:03:00.0 eth0: Link is Up - 1Gbps/Full - flow control rx/tx
   83.324606] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
   83.329432] r8169 0000:03:00.0 eth0: Link is Down
   83.345166] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
   83.469659] r8169 0000:03:00.0 eth0: Link is Down
   83.505739] NET: Registered protocol family 17
   89.520812] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
   89.650909] r8169 0000:03:00.0 eth0: Link is Down
  116.387431] r8169 0000:03:00.0 eth0: Link is Up - 1Gbps/Full - flow control rx/tx
  116.391844] r8169 0000:03:00.0 eth0: Link is Down
  116.409442] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
  116.533230] r8169 0000:03:00.0 eth0: Link is Down
  122.584872] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
  122.717883] r8169 0000:03:00.0 eth0: Link is Down
  149.353390] r8169 0000:03:00.0 eth0: Link is Up - 1Gbps/Full - flow control rx/tx
  149.357844] r8169 0000:03:00.0 eth0: Link is Down
  149.381006] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
  149.509838] r8169 0000:03:00.0 eth0: Link is Down
  155.565024] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
  155.694958] r8169 0000:03:00.0 eth0: Link is Down
  182.478672] r8169 0000:03:00.0 eth0: Link is Up - 1Gbps/Full - flow control rx/tx
  182.483337] r8169 0000:03:00.0 eth0: Link is Down
  182.501416] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
  182.625673] r8169 0000:03:00.0 eth0: Link is Down
  188.680872] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
  188.818780] r8169 0000:03:00.0 eth0: Link is Down
  215.902989] r8169 0000:03:00.0 eth0: Link is Up - 1Gbps/Full - flow control rx/tx
  215.907843] r8169 0000:03:00.0 eth0: Link is Down
  215.924836] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
  216.061182] r8169 0000:03:00.0 eth0: Link is Down
  222.124917] Generic FE-GE Realtek PHY r8169-300:00: attached PHY driver [Generic FE-GE Realtek PHY] (mii_bus:phy_addr=r8169-300:00, irq=IGNORE)
  222.260393] r8169 0000:03:00.0 eth0: Link is Down
2

While running wicked, delete any files associated with this connection.

Look in “/etc/NetworkManager/system-connections”
and in “/var/lib/NetworkManager”.

I don’t know if that will help, but it is worth trying.

I had a problem on Tumbleweed. Switching to “wicked” fixed it. Then forcing a fresh configuration with NetworkManager got that working again. It looked as if NetworkManager was somehow getting the settings wrong.

3

I deleted connections settings stored in /etc/NetworkManager/system-connections ad created new - nothing changed.

Then I deleted DHCP lease keys in /var/lib/NetworkManager.
After restart of NM it works again.

Thank you very much, mr. nrickert.

4

I’m glad you now have it working.