wired LAN not shown in GUI Network Manager

[kaefert]

Hey there!

I have a laptop with integrated wifi networking and a USB-C GBit wired network adapter. Both work fine, but the wired network only shows up on the CLI commands, but not on the GUI NetworkManager tool, this shows only wifi.

Can this be fixed?

Code: Select all

$ inxi -Fxxxrzd
System:    Kernel: 5.4.0-80-generic x86_64 bits: 64 compiler: gcc v: 9.3.0 Desktop: Cinnamon 5.0.5 wm: muffin 5.0.1 
           dm: LightDM 1.30.0 Distro: Linux Mint 20.2 Uma base: Ubuntu 20.04 focal 
Machine:   Type: Laptop System: Dell product: XPS 15 7590 v: N/A serial: <filter> Chassis: type: 10 serial: <filter> 
           Mobo: Dell model: 018W12 v: A05 serial: <filter> UEFI: Dell v: 1.11.0 date: 05/31/2021 
Battery:   ID-1: BAT0 charge: 86.0 Wh condition: 86.0/97.0 Wh (89%) volts: 12.9/11.4 model: LGC-LGC8.33 DELL 5XJ289A 
           type: Li-ion serial: <filter> status: Full 
CPU:       Topology: 6-Core model: Intel Core i7-9750H bits: 64 type: MT MCP arch: Kaby Lake rev: A L2 cache: 12.0 MiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 62399 
           Speed: 3861 MHz min/max: 800/4500 MHz Core speeds (MHz): 1: 4262 2: 4211 3: 4275 4: 4294 5: 4202 6: 4280 7: 4251 
           8: 4270 9: 4226 10: 4140 11: 4076 12: 4198 
Graphics:  Device-1: Intel UHD Graphics 630 vendor: Dell driver: i915 v: kernel bus ID: 00:02.0 chip ID: 8086:3e9b 
           Device-2: NVIDIA TU117M [GeForce GTX 1650 Mobile / Max-Q] vendor: Hewlett-Packard driver: N/A bus ID: 01:00.0 
           chip ID: 10de:1f91 
           Display: x11 server: X.Org 1.20.9 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1080~60Hz 
           OpenGL: renderer: Mesa Intel UHD Graphics 630 (CFL GT2) v: 4.6 Mesa 20.2.6 direct render: Yes 
Audio:     Device-1: Intel Cannon Lake PCH cAVS vendor: Dell driver: snd_hda_intel v: kernel bus ID: 00:1f.3 
           chip ID: 8086:a348 
           Device-2: N/A type: USB driver: hid-generic,snd-usb-audio,usbhid bus ID: 1-5.4.4:9 chip ID: 2000:dd00 
           serial: <filter> 
           Sound Server: ALSA v: k5.4.0-80-generic 
Network:   Device-1: Intel Wi-Fi 6 AX200 vendor: Bigfoot Networks driver: iwlwifi v: kernel port: 3000 bus ID: 3b:00.0 
           chip ID: 8086:2723 
           IF: wlp59s0 state: up mac: <filter> 
           Device-2: Realtek RTL8153 Gigabit Ethernet Adapter type: USB driver: r8152 bus ID: 4-1.4:3 chip ID: 0bda:8153 
           serial: <filter> 
           IF: enx00e04c6806d3 state: up speed: 1000 Mbps duplex: full mac: <filter> 
Drives:    Local Storage: total: 15.02 TiB used: 1.22 TiB (8.1%) 
           ID-1: /dev/nvme0n1 vendor: SK Hynix model: PC601 NVMe 512GB size: 476.94 GiB speed: 31.6 Gb/s lanes: 4 
           serial: <filter> rev: 80002111 scheme: GPT 
           ID-2: /dev/sda type: USB vendor: Seagate model: Desktop size: 7.28 TiB serial: <filter> rev: 040B 
           ID-3: /dev/sdb type: USB vendor: Seagate model: Expansion Desk size: 7.28 TiB serial: <filter> rev: 0915 
           Message: No Optical or Floppy data was found. 
Partition: ID-1: / size: 476.39 GiB used: 359.40 GiB (75.4%) fs: btrfs dev: /dev/dm-0 
           ID-2: /boot size: 456.7 MiB used: 210.3 MiB (46.0%) fs: ext4 dev: /dev/nvme0n1p2 
           ID-3: /home size: 476.39 GiB used: 359.40 GiB (75.4%) fs: btrfs dev: /dev/dm-0 
           ID-4: /var size: 476.39 GiB used: 359.40 GiB (75.4%) fs: btrfs dev: /dev/dm-0 
           ID-5: /var/log size: 476.39 GiB used: 359.40 GiB (75.4%) fs: btrfs dev: /dev/dm-0 
Sensors:   System Temperatures: cpu: 68.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Repos:     No active apt repos in: /etc/apt/sources.list 
           Active apt repos in: /etc/apt/sources.list.d/influxdb.list 
           1: deb https://repos.influxdata.com/ubuntu focal stable
           Active apt repos in: /etc/apt/sources.list.d/nodesource.list 
           1: deb [signed-by=/usr/share/keyrings/nodesource.gpg] https://deb.nodesource.com/node_14.x focal main
           2: deb-src [signed-by=/usr/share/keyrings/nodesource.gpg] https://deb.nodesource.com/node_14.x focal main
           Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
           1: deb http://ftp-stud.hs-esslingen.de/pub/Mirrors/packages.linuxmint.com uma main upstream import backport
           2: deb http://ubuntu.anexia.at/ubuntu focal main restricted universe multiverse
           3: deb http://ubuntu.anexia.at/ubuntu focal-updates main restricted universe multiverse
           4: deb http://ubuntu.anexia.at/ubuntu focal-backports main restricted universe multiverse
           5: deb http://security.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
           6: deb http://archive.canonical.com/ubuntu/ focal partner
           Active apt repos in: /etc/apt/sources.list.d/xpra.list 
           1: deb https://xpra.org/ focal main
Info:      Processes: 418 Uptime: 21h 03m Memory: 7.42 GiB used: 2.11 GiB (28.4%) Init: systemd v: 245 runlevel: 5 Compilers: 
           gcc: 9.3.0 alt: 9 Shell: bash v: 5.0.17 running in: gnome-terminal inxi: 3.0.38

[Moonstone Man]

Both work fine, but the wired network only shows up on the CLI commands, but not on the GUI NetworkManager tool, this shows only wifi.

Code: Select all

System:    Kernel: 5.4.0-80-generic

You must have a cable cable connected to a switch or router.

If you have a cable connected and it's not showing up then it's probably a driver issue. The simplest and quickest thing to do is try a more recent kernel. Go into update manager, select View then select Linux Kernels. Install the latest 5.11, reboot and see if that rectifies the problem.

[kaefert]

Okey, I will try that tonight (in around 14 hours). I don't want to reboot that system right now.

To clarify: The wired network is connected, gets assigned a config by my network's DHCP server, and performs as expected with the full GBit duplex bandwith. My issue is only with the NetworkManager GUI.

[Moonstone Man]

To clarify: The wired network is connected, gets assigned a config by my network's DHCP server, and performs as expected with the full GBit duplex bandwith. My issue is only with the NetworkManager GUI.

Thanks for the clarification. That certainly does indicate a problem to be looked at.

[t42]

To clarify: The wired network is connected

what is an output of these commands:

Code: Select all

nmcli -o
nmcli connection show

[kaefert]

Code: Select all

# nmcli -o
wlp59s0: connected to {{{my wifi name}}}
        "Intel 6 AX200"
        wifi (iwlwifi), {{{my wifi mac}}}, hw, mtu 1500
        ip4 default
        inet4 192.168.1.6/24
        route4 0.0.0.0/0
        route4 169.254.0.0/16
        route4 192.168.1.0/24
        inet6 fdaa:6290:6ff7::21a/128
        inet6 fdaa:6290:6ff7:0:15c5:e729:c5c4:4e50/64
        inet6 fdaa:6290:6ff7:0:81f7:88b2:a3db:abad/64
        inet6 fdaa:6290:6ff7:0:2ee6:f5d0:6433:1efc/64
        inet6 fe80::1fb:a6b3:4e9b:ac4d/64
        route6 fdaa:6290:6ff7::/48
        route6 fdaa:6290:6ff7::/64
        route6 fdaa:6290:6ff7::21a/128
        route6 fe80::/64

enx00e04c6806d3: unmanaged
        "Realtek RTL8153"
        ethernet (r8152), {{{ethernet adapter mac}}}, hw, mtu 1500

lo: unmanaged
        "lo"
        loopback (unknown), 00:00:00:00:00:00, sw, mtu 65536

p2p-dev-wlp59s0: unmanaged
        "p2p-dev-wlp59s0"
        wifi-p2p, hw

DNS configuration:
        servers: 192.168.1.1
        domains: lan
        interface: wlp59s0

        servers: fdaa:6290:6ff7::1 fe80::f29f:c2ff:fea3:363b fe80::8ac3:97ff:feeb:6afc
        interface: wlp59s0

Use "nmcli device show" to get complete information about known devices and
"nmcli connection show" to get an overview on active connection profiles.

Consult nmcli(1) and nmcli-examples(7) manual pages for complete usage details.

Code: Select all

# nmcli connection show
NAME          UUID                                  TYPE  DEVICE  
{{{my wifi name}}}      c971f129-f2f8-4d87-ab95-ff3b0dcc35af  wifi  wlp59s0 

[t42]

what is:

Code: Select all

nmcli r
nmcli r all on
nmcli r

I'd try to recreate a wired profile. Left-click Network icon --> Network Settings --> Add Profile button (filling active connection data)

[Moonstone Man]

I'd try to recreate a wired profile. Left-click Network icon --> Network Settings --> Add Profile button (filling active connection data)

I'd delete the old one first

[kaefert]

Code: Select all

# nmcli r
WIFI-HW  WIFI     WWAN-HW  WWAN    
enabled  enabled  enabled  enabled 
# nmcli r all on
# nmcli r
WIFI-HW  WIFI     WWAN-HW  WWAN    
enabled  enabled  enabled  enabled 

Left-click Network icon --> Network Settings --> Add Profile button

If you mean the "+"-Button in there, this gives me a popup titled "Add VPN" with the options OpenVPN, PPTP and "Import from file...".

I'd delete the old one first

Please be more specific, what old profile should I delete? It seems NetworkManager only has profiles for wifi on my machine, do you want me to delete the wifi network profile? Why? How?

[Moonstone Man]

do you want me to delete the wifi network profile? Why? How?

No. Just create a new connection for that device. I was mistaken and was thinking of someone else's issue.

[kaefert]

Just create a new connection for that device

how do I do that?
Left-click Network icon --> Network Settings --> "+" only allows me to create VPN profiles as explained, I can't see any other button in that window that could be meant by the description Add Profile button...

[Moonstone Man]

Just create a new connection for that device

how do I do that?
Left-click Network icon --> Network Settings --> "+" only allows me to create VPN profiles ...

You don't see this when you click + in Network Connections?

[kaefert]

no, if I click on this + I see this:

Screenshot_20210802_132933.png

[Moonstone Man]

no, if I click on this + I see this:

That's network settings. I said network connections.

[kaefert]

Ahh, sorry, I was fixated on the path @t42 told me, didn't see the difference in your instructions. Sorry.

I now created an Ethernet Profile named "DHCP Client" leaving everything as default only selecting the card (which was shown in a dropdown).
But NetworkManager still shows only the wifi connection everywhere else, only under "Network Connections" I now have this profile which shows as never used:

[t42]

I was fixated on the path @t42 told me

You can see the add profile button only when selecting wired connection (which you do not have obviously). Sorry for not envisage that.

[t42]

You can try this
Open your your .yaml file in /etc/netplan/
It should look like this (otherwise make changes as necessary):

Code: Select all

# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager

Then:

Code: Select all

sudo netplan --debug generate
sudo netplan apply
reboot

Then open NetworkManager GUI to configure your connection.

[kaefert]

Code: Select all

# cat /etc/netplan/1-network-manager-all.yaml 
# Let NetworkManager manage all devices on this system
network:
  version: 2
  renderer: NetworkManager

Code: Select all

# netplan --debug generate
DEBUG:command generate: running ['/lib/netplan/generate']
** (generate:499554): DEBUG: 17:08:56.321: Processing input file /etc/netplan/1-network-manager-all.yaml..
** (generate:499554): DEBUG: 17:08:56.321: starting new processing pass
** (generate:499554): DEBUG: 17:08:56.321: Processing input file /run/netplan/enx00e04c6806d3.yaml..
** (generate:499554): DEBUG: 17:08:56.321: starting new processing pass
** (generate:499554): DEBUG: 17:08:56.321: We have some netdefs, pass them through a final round of validation
** (generate:499554): DEBUG: 17:08:56.321: enx00e04c6806d3: setting default backend to 1
** (generate:499554): DEBUG: 17:08:56.321: Configuration is valid
** (generate:499554): DEBUG: 17:08:56.321: Generating output files..
** (generate:499554): DEBUG: 17:08:56.321: openvswitch: definition enx00e04c6806d3 is not for us (backend 1)
** (generate:499554): DEBUG: 17:08:56.321: NetworkManager: definition enx00e04c6806d3 is not for us (backend 1)
(generate:499554): GLib-DEBUG: 17:08:56.321: posix_spawn avoided (fd close requested) 
(generate:499554): GLib-DEBUG: 17:08:56.322: posix_spawn avoided (fd close requested) 
# netplan apply

The reboot step I can do in around 6 hours tonight. Should I try with a newer kernel or stay with the current one and just see if the netplan thing did work on it's own?

[t42]

Please try one thing at a time.

[kaefert]

okey, so I tried rebooting, doesn't seem any different.

UPDATE: switching to Kernel 5.11 makes NetworkManager GUI handle my USB-C LAN Adapter.

Though with this Kernel my initramfs-dropbear for remote LUKS unlocking stopped working.
It seems with the 5.11 kernel the initramfs runtime does find the USB-C LAN adapter only after the DCHP-client has already given up on auto configuring network devices...

So I've set the default kernel in GRUB back to 5.4, since this is the more important feature for me right now..