[SOLVED] [RTL8151] Ethernet not working via multiport adapter

Thank you for the warm welcome :slight_smile:

Here is some additional information as suggested:

Generated on 2020-12-10 08:57:1607587047

#################### lspci -vnn ########################

00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers [8086:5904] (rev 02)
	Subsystem: Lenovo Device [17aa:224b]
	Flags: bus master, fast devsel, latency 0
	Capabilities: <access denied>
	Kernel driver in use: skl_uncore

00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 620 [8086:5916] (rev 02) (prog-if 00 [VGA controller])
	Subsystem: Lenovo Device [17aa:224b]
	Flags: bus master, fast devsel, latency 0, IRQ 135
	Memory at eb000000 (64-bit, non-prefetchable) [size=16M]
	Memory at a0000000 (64-bit, prefetchable) [size=256M]
	I/O ports at e000 [size=64]
	Expansion ROM at 000c0000 [virtual] [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: i915
	Kernel modules: i915

00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller [8086:9d2f] (rev 21) (prog-if 30 [XHCI])
	Subsystem: Lenovo Device [17aa:224b]
	Flags: bus master, medium devsel, latency 0, IRQ 131
	Memory at ec200000 (64-bit, non-prefetchable) [size=64K]
	Capabilities: <access denied>
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci_pci

00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise Point-LP Thermal subsystem [8086:9d31] (rev 21)
	Subsystem: Lenovo Device [17aa:224b]
	Flags: fast devsel, IRQ 18
	Memory at ec228000 (64-bit, non-prefetchable) [size=4K]
	Capabilities: <access denied>
	Kernel driver in use: intel_pch_thermal
	Kernel modules: intel_pch_thermal

00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-LP CSME HECI #1 [8086:9d3a] (rev 21)
	Subsystem: Lenovo Device [17aa:224b]
	Flags: bus master, fast devsel, latency 0, IRQ 133
	Memory at ec229000 (64-bit, non-prefetchable) [size=4K]
	Capabilities: <access denied>
	Kernel driver in use: mei_me
	Kernel modules: mei_me

00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #1 [8086:9d10] (rev f1) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0, IRQ 120
	Bus: primary=00, secondary=01, subordinate=39, sec-latency=0
	I/O behind bridge: 00002000-00004fff [size=12K]
	Memory behind bridge: d4000000-ea0fffff [size=353M]
	Prefetchable memory behind bridge: 00000000b0000000-00000000d1ffffff [size=544M]
	Capabilities: <access denied>
	Kernel driver in use: pcieport

00:1c.2 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #3 [8086:9d12] (rev f1) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0, IRQ 121
	Bus: primary=00, secondary=3a, subordinate=3a, sec-latency=0
	I/O behind bridge: [disabled]
	Memory behind bridge: ec100000-ec1fffff [size=1M]
	Prefetchable memory behind bridge: [disabled]
	Capabilities: <access denied>
	Kernel driver in use: pcieport

00:1d.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express Root Port #9 [8086:9d18] (rev f1) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0, IRQ 122
	Bus: primary=00, secondary=3c, subordinate=3c, sec-latency=0
	I/O behind bridge: [disabled]
	Memory behind bridge: ec000000-ec0fffff [size=1M]
	Prefetchable memory behind bridge: [disabled]
	Capabilities: <access denied>
	Kernel driver in use: pcieport

00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point-LP LPC Controller [8086:9d58] (rev 21)
	Subsystem: Lenovo Device [17aa:224b]
	Flags: bus master, medium devsel, latency 0

00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-LP PMC [8086:9d21] (rev 21)
	Subsystem: Lenovo Device [17aa:224b]
	Flags: fast devsel
	Memory at ec224000 (32-bit, non-prefetchable) [disabled] [size=16K]

00:1f.3 Audio device [0403]: Intel Corporation Sunrise Point-LP HD Audio [8086:9d71] (rev 21)
	Subsystem: Lenovo Device [17aa:224b]
	Flags: bus master, fast devsel, latency 64, IRQ 136
	Memory at ec220000 (64-bit, non-prefetchable) [size=16K]
	Memory at ec210000 (64-bit, non-prefetchable) [size=64K]
	Capabilities: <access denied>
	Kernel driver in use: snd_hda_intel
	Kernel modules: snd_hda_intel, snd_soc_skl

00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-LP SMBus [8086:9d23] (rev 21)
	Subsystem: Lenovo Device [17aa:224b]
	Flags: medium devsel, IRQ 16
	Memory at ec22a000 (64-bit, non-prefetchable) [size=256]
	I/O ports at efa0 [size=32]
	Kernel driver in use: i801_smbus
	Kernel modules: i2c_i801

01:00.0 PCI bridge [0604]: Intel Corporation JHL6240 Thunderbolt 3 Bridge (Low Power) [Alpine Ridge LP 2016] [8086:15c0] (rev 01) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0, IRQ 16
	Bus: primary=01, secondary=02, subordinate=39, sec-latency=0
	I/O behind bridge: 00002000-00003fff [size=8K]
	Memory behind bridge: d4000000-ea0fffff [size=353M]
	Prefetchable memory behind bridge: 00000000b0000000-00000000d1ffffff [size=544M]
	Capabilities: <access denied>
	Kernel driver in use: pcieport

02:00.0 PCI bridge [0604]: Intel Corporation JHL6240 Thunderbolt 3 Bridge (Low Power) [Alpine Ridge LP 2016] [8086:15c0] (rev 01) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0, IRQ 123
	Bus: primary=02, secondary=03, subordinate=03, sec-latency=0
	I/O behind bridge: [disabled]
	Memory behind bridge: ea000000-ea0fffff [size=1M]
	Prefetchable memory behind bridge: [disabled]
	Capabilities: <access denied>
	Kernel driver in use: pcieport

02:01.0 PCI bridge [0604]: Intel Corporation JHL6240 Thunderbolt 3 Bridge (Low Power) [Alpine Ridge LP 2016] [8086:15c0] (rev 01) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0, IRQ 124
	Bus: primary=02, secondary=04, subordinate=38, sec-latency=0
	I/O behind bridge: 00002000-00002fff [size=4K]
	Memory behind bridge: d4000000-e9efffff [size=351M]
	Prefetchable memory behind bridge: 00000000b0000000-00000000d1ffffff [size=544M]
	Capabilities: <access denied>
	Kernel driver in use: pcieport

02:02.0 PCI bridge [0604]: Intel Corporation JHL6240 Thunderbolt 3 Bridge (Low Power) [Alpine Ridge LP 2016] [8086:15c0] (rev 01) (prog-if 00 [Normal decode])
	Flags: bus master, fast devsel, latency 0, IRQ 125
	Bus: primary=02, secondary=39, subordinate=39, sec-latency=0
	I/O behind bridge: 00003000-00003fff [size=4K]
	Memory behind bridge: e9f00000-e9ffffff [size=1M]
	Prefetchable memory behind bridge: [disabled]
	Capabilities: <access denied>
	Kernel driver in use: pcieport

39:00.0 USB controller [0c03]: Intel Corporation JHL6240 Thunderbolt 3 USB 3.1 Controller (Low Power) [Alpine Ridge LP 2016] [8086:15c1] (rev 01) (prog-if 30 [XHCI])
	Subsystem: Device [2222:1111]
	Flags: bus master, fast devsel, latency 0, IRQ 132
	Memory at e9f00000 (32-bit, non-prefetchable) [size=64K]
	Capabilities: <access denied>
	Kernel driver in use: xhci_hcd
	Kernel modules: xhci_pci

3a:00.0 Network controller [0280]: Intel Corporation Wireless 8265 / 8275 [8086:24fd] (rev 78)
	Subsystem: Intel Corporation Dual Band Wireless-AC 8265 [8086:1010]
	Flags: bus master, fast devsel, latency 0, IRQ 134
	Memory at ec100000 (64-bit, non-prefetchable) [size=8K]
	Capabilities: <access denied>
	Kernel driver in use: iwlwifi
	Kernel modules: iwlwifi

3c:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961 [144d:a804] (prog-if 02 [NVM Express])
	Subsystem: Samsung Electronics Co Ltd Device [144d:a801]
	Flags: bus master, fast devsel, latency 0, IRQ 16, NUMA node 0
	Memory at ec000000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: nvme



#################### lspci -vt ########################

-[0000:00]-+-00.0  Intel Corporation Xeon E3-1200 v6/7th Gen Core Processor Host Bridge/DRAM Registers
           +-02.0  Intel Corporation HD Graphics 620
           +-14.0  Intel Corporation Sunrise Point-LP USB 3.0 xHCI Controller
           +-14.2  Intel Corporation Sunrise Point-LP Thermal subsystem
           +-16.0  Intel Corporation Sunrise Point-LP CSME HECI #1
           +-1c.0-[01-39]----00.0-[02-39]--+-00.0-[03]--
           |                               +-01.0-[04-38]--
           |                               \-02.0-[39]----00.0  Intel Corporation JHL6240 Thunderbolt 3 USB 3.1 Controller (Low Power) [Alpine Ridge LP 2016]
           +-1c.2-[3a]----00.0  Intel Corporation Wireless 8265 / 8275
           +-1d.0-[3c]----00.0  Samsung Electronics Co Ltd NVMe SSD Controller SM961/PM961
           +-1f.0  Intel Corporation Sunrise Point-LP LPC Controller
           +-1f.2  Intel Corporation Sunrise Point-LP PMC
           +-1f.3  Intel Corporation Sunrise Point-LP HD Audio
           \-1f.4  Intel Corporation Sunrise Point-LP SMBus


#################### lsusb -vt ########################

/:  Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 10000M
    ID 1d6b:0003 Linux Foundation 3.0 root hub
/:  Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 12M
        ID 1a40:0101 Terminus Technology Inc. Hub
        |__ Port 1: Dev 3, If 0, Class=Mass Storage, Driver=, 12M
            ID 0bda:8151 Realtek Semiconductor Corp. RTL8151 Adapteon Business Mobile Networks BV
        |__ Port 3: Dev 5, If 0, Class=Human Interface Device, Driver=usbhid, 12M
            ID 046a:c091 Cherry GmbH 
        |__ Port 3: Dev 5, If 1, Class=Human Interface Device, Driver=usbhid, 12M
            ID 046a:c091 Cherry GmbH 
        |__ Port 4: Dev 6, If 0, Class=Audio, Driver=snd-usb-audio, 12M
            ID 0b0e:0e41 GN Netcom 
        |__ Port 4: Dev 6, If 1, Class=Audio, Driver=snd-usb-audio, 12M
            ID 0b0e:0e41 GN Netcom 
        |__ Port 4: Dev 6, If 2, Class=Audio, Driver=snd-usb-audio, 12M
            ID 0b0e:0e41 GN Netcom 
        |__ Port 4: Dev 6, If 3, Class=Human Interface Device, Driver=usbhid, 12M
            ID 0b0e:0e41 GN Netcom 
/:  Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/6p, 5000M
    ID 1d6b:0003 Linux Foundation 3.0 root hub
    |__ Port 3: Dev 2, If 0, Class=Mass Storage, Driver=usb-storage, 5000M
        ID 0bda:0316 Realtek Semiconductor Corp. Card Reader
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/12p, 480M
    ID 1d6b:0002 Linux Foundation 2.0 root hub
    |__ Port 4: Dev 2, If 0, Class=Vendor Specific Class, Driver=, 480M
        ID 2a47:4ee7 Mundo Reader, S.L. 
    |__ Port 5: Dev 3, If 0, Class=Chip/SmartCard, Driver=, 12M
        ID 058f:9540 Alcor Micro Corp. AU9540 Smartcard Reader
    |__ Port 7: Dev 4, If 0, Class=Wireless, Driver=btusb, 12M
        ID 8087:0a2b Intel Corp. Bluetooth wireless interface
    |__ Port 7: Dev 4, If 1, Class=Wireless, Driver=btusb, 12M
        ID 8087:0a2b Intel Corp. Bluetooth wireless interface
    |__ Port 8: Dev 5, If 1, Class=Video, Driver=uvcvideo, 480M
        ID 04f2:b5ab Chicony Electronics Co., Ltd 
    |__ Port 8: Dev 5, If 0, Class=Video, Driver=uvcvideo, 480M
        ID 04f2:b5ab Chicony Electronics Co., Ltd 


#################### inxi -Fxzc0 ########################

System:    Kernel: 5.9.11-3-MANJARO x86_64 bits: 64 compiler: gcc v: 10.2.0 
           Desktop: KDE Plasma 5.20.4 Distro: Manjaro Linux 
Machine:   Type: Laptop System: LENOVO product: 20HF0000MZ v: ThinkPad T470s serial: <filter> 
           Mobo: LENOVO model: 20HF0000MZ v: SDK0J40697 WIN serial: <filter> UEFI: LENOVO 
           v: N1WET56W (1.35 ) date: 08/30/2019 
Battery:   ID-1: BAT0 charge: 22.0 Wh condition: 22.1/23.5 Wh (94%) model: SANYO 00HW022 
           status: Unknown 
           ID-2: BAT1 charge: 23.3 Wh condition: 23.4/26.3 Wh (89%) model: SANYO 01AV405 
           status: Unknown 
CPU:       Info: Dual Core model: Intel Core i5-7200U bits: 64 type: MT MCP arch: Amber Lake 
           rev: 9 L2 cache: 3072 KiB 
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 bogomips: 21607 
           Speed: 2503 MHz min/max: 400/3100 MHz Core speeds (MHz): 1: 2503 2: 2602 3: 2529 
           4: 2606 
Graphics:  Device-1: Intel HD Graphics 620 vendor: Lenovo driver: i915 v: kernel bus ID: 00:02.0 
           Device-2: Chicony Integrated Camera type: USB driver: uvcvideo bus ID: 1-8:5 
           Display: x11 server: X.Org 1.20.10 driver: intel unloaded: modesetting 
           resolution: 3840x2160~60Hz 
           OpenGL: renderer: Mesa Intel HD Graphics 620 (KBL GT2) v: 4.6 Mesa 20.2.3 
           direct render: Yes 
Audio:     Device-1: Intel Sunrise Point-LP HD Audio vendor: Lenovo driver: snd_hda_intel 
           v: kernel bus ID: 00:1f.3 
           Device-2: GN Netcom Jabra Evolve2 40 type: USB driver: jabra,snd-usb-audio,usbhid 
           bus ID: 3-1.4:6 
           Sound Server: ALSA v: k5.9.11-3-MANJARO 
Network:   Device-1: Intel Wireless 8265 / 8275 driver: iwlwifi v: kernel port: efa0 
           bus ID: 3a:00.0 
           IF: wlp58s0 state: up mac: <filter> 
           Device-2: Realtek RTL8151 Adapteon Business Mobile Networks BV type: USB 
           driver: usb-network bus ID: 3-1.1:3 
Drives:    Local Storage: total: 238.47 GiB used: 84.02 GiB (35.2%) 
           ID-1: /dev/nvme0n1 vendor: Samsung model: MZVLW256HEHP-000L7 size: 238.47 GiB 
Partition: ID-1: / size: 29.40 GiB used: 21.31 GiB (72.5%) fs: ext4 dev: /dev/nvme0n1p3 
           ID-2: /home size: 195.83 GiB used: 62.70 GiB (32.0%) fs: ext4 dev: /dev/dm-0 
Swap:      ID-1: swap-1 type: partition size: 8.00 GiB used: 0 KiB (0.0%) dev: /dev/nvme0n1p2 
Sensors:   System Temperatures: cpu: 71.0 C mobo: N/A 
           Fan Speeds (RPM): cpu: 4006 
Info:      Processes: 244 Uptime: 42m Memory: 7.67 GiB used: 3.99 GiB (52.0%) Init: systemd 
           Compilers: gcc: 10.2.0 clang: 11.0.0 Packages: 1486 Client: KDE Plasma v: 5.20.4 
           inxi: 3.1.08 

I am quite sure that the root cause is a non-existing usb-modeswitch on the RTL8151 chip which prevents the driver from being loaded.