Pi400 (pi4) keeps trying unplugged ethernet

[lawik]

Describe the bug

Setting up a normal pi4 project from nerves.new I keep getting messages (both on a connected display, punching through whatever I'm doing) and in the logs:

13:36:59.861 [error] could not attach to PHY
13:36:59.867 [error] bcmgenet fd580000.ethernet eth0: failed to connect to PHY
13:36:59.888 [debug] ip:ip: SIOCSIFFLAGS: No such device
13:36:59.889 [error] Nonzero exit from ip, ["link", "set", "eth0", "up"]: 2

RingLogger gave me some more:

14:37:24.893 [info]  RouteManager: clear_route eth0
14:37:24.895 [warn]  RouteManager: set_connection_status to :disconnected on unknown ifname: eth0
14:37:24.906 [warn]  bcmgenet: Skipping UMAC reset
14:37:24.906 [error] could not attach to PHY
14:37:24.912 [error] bcmgenet fd580000.ethernet eth0: failed to connect to PHY
14:37:24.931 [debug] ip:ip: SIOCSIFFLAGS: No such device                            
14:37:24.932 [error] Nonzero exit from ip, ["link", "set", "eth0", "up"]: 2                           
14:37:24.932 [debug] VintageNet(eth0): :configuring -> done error: retrying after 30000 ms

To Reproduce

• Set up a Nerves project for the pi4
• Set it up for wifi
• Burn firmware and put it in the Pi400
• Logging

Or try this more involved repo: https://github.com/lawik/deck

Expected behavior
It should chill eventually :)

VintageNet Info

iex(nerves@nerves-30ec.local)4> VintageNet.info
VintageNet 0.11.1

All interfaces:       ["eth0", "lo", "wlan0"]
Available interfaces: ["wlan0"]

Interface eth0
  Type: VintageNetEthernet
  Present: true
  State: :retrying (8.2 s)
  Connection: :disconnected (0:03:08)
  Configuration:
    %{ipv4: %{method: :dhcp}, type: VintageNetEthernet}

Interface usb0
  Type: VintageNetDirect
  Present: false
  Configuration:
    %{type: VintageNetDirect}

Interface wlan0
  Type: VintageNetWiFi
  Present: true
  State: :configured (0:03:07)
  Connection: :internet (0:02:57)
  Addresses: 192.168.3.71/24, fe80::e65f:1ff:fe48:b03/64
  Configuration:

Environment

lawik@monolith:~/projects/deck$ mix nerves.env --info
==> nerves
==> deck
|nerves_bootstrap| Environment Package List

  Pkg:         nerves_system_br
  Vsn:         1.16.4
  Type:        system_platform
  BuildRunner: {nil, []}

  Pkg:         nerves_system_rpi4
  Vsn:         1.16.2
  Type:        system
  BuildRunner: {Nerves.Artifact.BuildRunners.Local, [make_args: ["source", "all"]]}

  Pkg:         nerves_toolchain_aarch64_nerves_linux_gnu
  Vsn:         1.4.3
  Type:        toolchain
  BuildRunner: {Nerves.Artifact.BuildRunners.Local, []}

  Pkg:         nerves_toolchain_ctng
  Vsn:         1.8.4
  Type:        toolchain_platform
  BuildRunner: {nil, []}

|nerves_bootstrap| Loadpaths Start

Nerves environment
  MIX_TARGET:   rpi4
  MIX_ENV:      dev

|nerves_bootstrap| Environment Variable List
  target:     rpi4
  toolchain:  /home/lawik/.nerves/artifacts/nerves_toolchain_aarch64_nerves_linux_gnu-linux_x86_64-1.4.3
  system:     /home/lawik/.nerves/artifacts/nerves_system_rpi4-portable-1.16.2
  app:        .

|nerves_bootstrap| Loadpaths End

Additional context

Frank's suspicions from Slack:

"VintageNet is really trying on that port. I think this is a bug. Wired Ethernet on other devices doesn't do that."