Arch Linux

startover

Member

Registered: 2011-01-24

Posts: 34

wired ethernet device gets dropped

I have to connect to internet using wired connection over usb. And it works fine _most_ of the time.
However, every once in a while, I get the disconnected and the wired device disappears.
Nothing works other than a restart. When this happens, Gnome taskbar does not even show the wired device any more.
Logs show bellow but not  much more. enp9s0u1u3 is the wired device. How can I debug/fix this?

kernel: r8152 5-1.3:1.0 enp9s0u1u3: Stop submitting intr, status -71
kernel: usb 2-3.4: USB disconnect, device number 4
dhcpcd[724]: enp9s0u1u3: carrier lost
dhcpcd[1084]: enp9s0u1u3: ps_bpf_recvbpf: Network is down
kernel: usb 5-1: USB disconnect, device number 2
kernel: usb 5-1.3: USB disconnect, device number 3
NetworkManager[720]: <info>  [1609429656.3094] device (enp9s0u1u3): state change: activated -> unmanag>
dhcpcd[724]: enp9s0u1u3: deleting route to 192.168.1.0/24
dhcpcd[724]: enp9s0u1u3: deleting default route via 192.168.1.1
NetworkManager[720]: <info>  [1609429656.3328] dhcp4 (enp9s0u1u3): canceled DHCP transaction
NetworkManager[720]: <info>  [1609429656.3328] dhcp4 (enp9s0u1u3): state changed bound -> done
dhcpcd[724]: enp9s0u1u3: removing interface

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,230

Re: wired ethernet device gets dropped

You have multiple network managers started and conflicting with each other. Decide for dhcpcd OR networkmanager, disable and stop all services of the other.

startover

Member

Registered: 2011-01-24

Posts: 34

Re: wired ethernet device gets dropped

You have multiple network managers started and conflicting with each other. Decide for dhcpcd OR networkmanager, disable and stop all services of the other.

I stopped and removed dhcpcd. But this problem existed even before I enabled dhcpcd.
In fact I had enabled dhcpcd thinking that it might help.