Ethernet Connection not available

Hi,

I have previously used this system with WIFI but went to use an Ethernet cable and I am not getting the option for any wired connections.

System:
Kernel: 6.6.2-zen1-1-zen arch: x86_64 bits: 64 compiler: gcc v: 13.2.1
clocksource: tsc available: hpet,acpi_pm
parameters: BOOT_IMAGE=/@/boot/vmlinuz-linux-zen
root=UUID=158c7b72-fa0b-4667-aab9-204c80cfbda6 rw rootflags=subvol=@
quiet loglevel=3 ibt=off
Desktop: KDE Plasma v: 5.27.9 tk: Qt v: 5.15.11 wm: kwin_x11 vt: 2
dm: SDDM Distro: Garuda Linux base: Arch Linux
Machine:
Type: Desktop Mobo: ASRock model: X670E Pro RS serial: <superuser required>
UEFI: American Megatrends LLC. v: 1.24 date: 05/23/2023
CPU:
Info: model: AMD Ryzen 9 7900 bits: 64 type: MT MCP arch: Zen 4 gen: 5
level: v4 note: check built: 2022+ process: TSMC n5 (5nm) family: 0x19 (25)
model-id: 0x61 (97) stepping: 2 microcode: 0xA601203
Topology: cpus: 1x cores: 12 tpc: 2 threads: 24 smt: enabled cache:
L1: 768 KiB desc: d-12x32 KiB; i-12x32 KiB L2: 12 MiB desc: 12x1024 KiB
L3: 64 MiB desc: 2x32 MiB
Speed (MHz): avg: 2005 high: 4342 min/max: 400/5482 scaling:
driver: amd-pstate-epp governor: powersave cores: 1: 400 2: 3949 3: 3755
4: 3494 5: 400 6: 3473 7: 4341 8: 400 9: 400 10: 400 11: 4342 12: 400
13: 4336 14: 400 15: 400 16: 400 17: 400 18: 3596 19: 4342 20: 400
21: 3686 22: 400 23: 400 24: 3620 bogomips: 177281
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Vulnerabilities: <filter>
Graphics:
Device-1: NVIDIA AD104 [GeForce RTX 4070] vendor: Gigabyte driver: nvidia
v: 545.29.06 alternate: nouveau,nvidia_drm non-free: 545.xx+
status: current (as of 2023-10) arch: Lovelace code: AD1xx
process: TSMC n4 (5nm) built: 2022+ pcie: gen: 4 speed: 16 GT/s lanes: 16
ports: active: none off: DP-1,HDMI-A-1 empty: DP-2,DP-3 bus-ID: 01:00.0
chip-ID: 10de:2786 class-ID: 0300
Device-2: Logitech C922 Pro Stream Webcam driver: snd-usb-audio,uvcvideo
type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 3-8:3
chip-ID: 046d:085c class-ID: 0102 serial: <filter>
Display: x11 server: X.Org v: 21.1.9 with: Xwayland v: 23.2.2
compositor: kwin_x11 driver: X: loaded: nvidia unloaded: modesetting
alternate: fbdev,nouveau,nv,vesa gpu: nvidia,nvidia-nvswitch
display-ID: :0 screens: 1
Screen-1: 0 s-res: 3840x1080 s-dpi: 81 s-size: 1204x343mm (47.40x13.50")
s-diag: 1252mm (49.29")
Monitor-1: DP-1 mapped: DP-0 note: disabled pos: primary,left
model: AOC 27G2G4 serial: <filter> built: 2021 res: 1920x1080 hz: 60 dpi: 82
gamma: 1.2 size: 598x336mm (23.54x13.23") diag: 686mm (27") ratio: 16:9
modes: max: 1920x1080 min: 640x480
Monitor-2: HDMI-A-1 mapped: HDMI-0 note: disabled pos: right
model: AOC e2752Vq serial: <filter> built: 2012 res: 1920x1080 hz: 60
dpi: 82 gamma: 1.2 size: 598x336mm (23.54x13.23") diag: 686mm (27")
ratio: 16:9 modes: max: 1920x1080 min: 640x480
API: EGL v: 1.5 hw: drv: nvidia platforms: device: 0 drv: nvidia device: 2
drv: swrast gbm: drv: nvidia surfaceless: drv: nvidia x11: drv: nvidia
inactive: wayland,device-1
API: OpenGL v: 4.6.0 compat-v: 4.5 vendor: nvidia mesa v: 545.29.06
glx-v: 1.4 direct-render: yes renderer: NVIDIA GeForce RTX 4070/PCIe/SSE2
memory: 11.71 GiB
API: Vulkan v: 1.3.269 layers: 5 device: 0 type: discrete-gpu
name: NVIDIA GeForce RTX 4070 driver: nvidia v: 545.29.06
device-ID: 10de:2786 surfaces: xcb,xlib
Audio:
Device-1: NVIDIA vendor: Gigabyte driver: snd_hda_intel v: kernel pcie:
gen: 4 speed: 16 GT/s lanes: 16 bus-ID: 01:00.1 chip-ID: 10de:22bc
class-ID: 0403
Device-2: AMD Family 17h/19h HD Audio vendor: ASRock driver: snd_hda_intel
v: kernel pcie: gen: 4 speed: 16 GT/s lanes: 16 bus-ID: 18:00.6
chip-ID: 1022:15e3 class-ID: 0403
Device-3: Logitech C922 Pro Stream Webcam driver: snd-usb-audio,uvcvideo
type: USB rev: 2.0 speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 3-8:3
chip-ID: 046d:085c class-ID: 0102 serial: <filter>
API: ALSA v: k6.6.2-zen1-1-zen status: kernel-api tools: N/A
Server-1: PipeWire v: 1.0.0 status: active with: 1: pipewire-pulse
status: active 2: wireplumber status: active 3: pipewire-alsa type: plugin
4: pw-jack type: plugin tools: pactl,pw-cat,pw-cli,wpctl
Network:
Device-1: MEDIATEK MT7922 802.11ax PCI Express Wireless Network Adapter
driver: mt7921e v: kernel pcie: gen: 2 speed: 5 GT/s lanes: 1
bus-ID: 0d:00.0 chip-ID: 14c3:0616 class-ID: 0280
IF: wlp13s0 state: up mac: <filter>
Bluetooth:
Device-1: MediaTek Wireless_Device driver: btusb v: 0.8 type: USB rev: 2.1
speed: 480 Mb/s lanes: 1 mode: 2.0 bus-ID: 1-12:4 chip-ID: 0e8d:0616
class-ID: e001 serial: <filter>
Report: btmgmt ID: hci1 rfk-id: 1 state: down bt-service: enabled,running
rfk-block: hardware: no software: no address: <filter> bt-v: 5.2 lmp-v: 11
status: discoverable: no pairing: no
Device-2: Edimax Bluetooth Adapter driver: btusb v: 0.8 type: USB rev: 1.1
speed: 12 Mb/s lanes: 1 mode: 1.1 bus-ID: 1-5:3 chip-ID: 7392:c611
class-ID: e001 serial: <filter>
Report: ID: hci0 rfk-id: 0 state: up address: <filter> bt-v: 5.1 lmp-v: 10
status: discoverable: no pairing: no class-ID: 7c0104
Drives:
Local Storage: total: 931.51 GiB used: 17.07 GiB (1.8%)
SMART Message: Unable to run smartctl. Root privileges required.
ID-1: /dev/nvme0n1 maj-min: 259:0 vendor: Kingston model: SA2000M81000G
size: 931.51 GiB block-size: physical: 512 B logical: 512 B speed: 31.6 Gb/s
lanes: 4 tech: SSD serial: <filter> fw-rev: S5Z42105 temp: 34.9 C
scheme: GPT
Partition:
ID-1: / raw-size: 931.22 GiB size: 931.22 GiB (100.00%)
used: 17.07 GiB (1.8%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
ID-2: /boot/efi raw-size: 300 MiB size: 299.4 MiB (99.80%)
used: 576 KiB (0.2%) fs: vfat dev: /dev/nvme0n1p1 maj-min: 259:1
ID-3: /home raw-size: 931.22 GiB size: 931.22 GiB (100.00%)
used: 17.07 GiB (1.8%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
ID-4: /var/log raw-size: 931.22 GiB size: 931.22 GiB (100.00%)
used: 17.07 GiB (1.8%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
ID-5: /var/tmp raw-size: 931.22 GiB size: 931.22 GiB (100.00%)
used: 17.07 GiB (1.8%) fs: btrfs dev: /dev/nvme0n1p2 maj-min: 259:2
Swap:
Kernel: swappiness: 133 (default 60) cache-pressure: 100 (default) zswap: no
ID-1: swap-1 type: zram size: 62.51 GiB used: 0 KiB (0.0%) priority: 100
comp: zstd avail: lzo,lzo-rle,lz4,lz4hc,842 max-streams: 24 dev: /dev/zram0
Sensors:
System Temperatures: cpu: 45.5 C mobo: 40.0 C gpu: nvidia temp: 42 C
Fan Speeds (rpm): N/A gpu: nvidia fan: 0%
Info:
Processes: 489 Uptime: 5m wakeups: 0 Memory: total: 64 GiB
available: 62.51 GiB used: 4.37 GiB (7.0%) Init: systemd v: 254
default: graphical tool: systemctl Compilers: gcc: 13.2.1 Packages:
pm: pacman pkgs: 1212 libs: 349 tools: octopi,paru Shell: fish v: 3.6.1
running-in: konsole inxi: 3.3.31
Garuda (2.6.19-2):
System install date:     2023-11-28
Last full system update: 2023-11-29
Is partially upgraded:   No
Relevant software:       snapper NetworkManager dracut nvidia-dkms
Windows dual boot:       No/Undetected
Failed units:            systemd-vconsole-setup.service```

Apparently the Ethernet card is not even recognized.
Does it show up in lspci?
Can you somehow find out the “chip-ID” for the Ethernet card, or its name at least?
It should be an RTL8125BG according to a very quick search.

This (old) thread may be useful:
[Solved] No network with RTL8125 2.5GbE Controller / Kernel & Hardware / Arch Linux Forums
one user reports success installing r8125-dkms and blacklisting r8169 (further instructions in the thread, note that you don’t have to clone and compile yourself, it’s in chaotic-aur so you can just pacman -S it)

I hope it works. I also hope someone else comes along who has the card and can give better instructions.

edit: it’s also worth trying with another kernel like linux or linux-lts.
Remember to also install its -headers package.

1 Like

It is the default plug on my ASRock X670E Pro RS.

From what I can see under lspci it is only showing the wifi/bluetooth card.

Have pasted it below in case I am just missing it.

00:00.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14d8
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14da
00:01.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14db
00:02.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14da
00:02.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14db
00:02.2 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14db
00:03.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14da
00:04.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14da
00:08.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14da
00:08.1 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14dd
00:08.3 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 14dd
00:14.0 SMBus: Advanced Micro Devices, Inc. [AMD] FCH SMBus Controller (rev 71)
00:14.3 ISA bridge: Advanced Micro Devices, Inc. [AMD] FCH LPC Bridge (rev 51)
00:18.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e0
00:18.1 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e1
00:18.2 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e2
00:18.3 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e3
00:18.4 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e4
00:18.5 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e5
00:18.6 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e6
00:18.7 Host bridge: Advanced Micro Devices, Inc. [AMD] Device 14e7
01:00.0 VGA compatible controller: NVIDIA Corporation AD104 [GeForce RTX 4070] (rev a1)
01:00.1 Audio device: NVIDIA Corporation Device 22bc (rev a1)
02:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f4 (rev 01)
03:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
03:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
03:05.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
03:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
03:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
03:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
03:0c.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
03:0d.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
09:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f4 (rev 01)
0a:00.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
0a:01.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
0a:02.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
0a:03.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
0a:04.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
0a:06.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
0a:07.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
0a:08.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
0a:0c.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
0a:0d.0 PCI bridge: Advanced Micro Devices, Inc. [AMD] Device 43f5 (rev 01)
0d:00.0 Network controller: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter
13:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 43f7 (rev 01)
14:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] Device 43f6 (rev 01)
15:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 43f7 (rev 01)
16:00.0 SATA controller: Advanced Micro Devices, Inc. [AMD] Device 43f6 (rev 01)
17:00.0 Non-Volatile memory controller: Kingston Technology Company, Inc. A2000 NVMe SSD (rev 03)
18:00.0 Non-Essential Instrumentation [1300]: Advanced Micro Devices, Inc. [AMD] Phoenix PCIe Dummy Function (rev c4)
18:00.2 Encryption controller: Advanced Micro Devices, Inc. [AMD] VanGogh PSP/CCP
18:00.3 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15b6
18:00.4 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15b7
18:00.6 Audio device: Advanced Micro Devices, Inc. [AMD] Family 17h/19h HD Audio Controller
19:00.0 USB controller: Advanced Micro Devices, Inc. [AMD] Device 15b8

Im still learning so I will try to give another Kernel a go.

Thanks

1 Like

The kernel and bios are usually the first candidates for causing this sort of thing.

Test at least 3 alternate kernels. Be sure your Ethernet is enabled in your bios and that your bios is completely up to date.

If you find no success there, then there are a few other things I’ve found to work in strange cases like this.

  1. I assume your Ethernet card is on your mobo, (but if it’s not) power down and unplug your computer from all power sources. Then swap your Ethernet card into another PCI slot. Power up again.

  2. Back up your bios settings, then power down and unplug your computer from all power sources. Next, perform a complete reset to your manufacturers factory default settings. After you have reset your bios, you will need to change some bios settings to make your bios compatible with Linux again. These will be the same settings you had to change when you installed Garuda, (secure boot, fastboot, AHCI, etc). Power up your computer again and see if your Ethernet is now detected.

Some people get lucky and simply removing their computer from all power sources is enough to allow the hardware to be detected afterwards.

Another thing that you should do is to boot up a live disk of Garuda or another OS, and check if your Ethernet is working there.

Please report on all steps that you attempt and the results.

If your Ethernet is still not detected after applying the aforementioned suggestions, then please post your complete dmesg logs.

I am moving your thread to the Networking category on the forum, as that’s where these type of posts generally belong. Hope you don’t mind.

2 Likes
  1. Ethernet onboard card (I think this is a ‘Dragon RTL8125’): Worked for you until you disabled the inbuilt bluetooth and connected the USB BT dongle.
    Bluetooth connection failing
Realtek RTL8125 2.5GbE vendor: ASRock driver: r8169 v: kernel
pcie: gen: 2 speed: 5 GT/s lanes: 1 port: e000 bus ID: 0e:00.0
chip ID: 10ec:8125 class ID: 0200
  1. This is a WLAN-BT combination module, BT didn’t work for you. Does WiFi work?
MEDIATEK MT7922 802.11ax PCI Express Wireless Network Adapter

LAN and WLAN are connectet to the same chip on the Mobo (2nd PROM21).

Different kernel and Linux Live ISO has already been suggested by @tbg. If that doesn’t work, install Windows as a test (the ASRock X670E Pro RS is Windows 10/11 certified). This way you can rule out a hardware defect.

EDIT: typo

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