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Thread: Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

  1. #1
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    Unhappy Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

    Hi all,

    I am new to Ubuntu, it's the first time I install it and I had to do it because of a new job I got. So I bought a new laptop, it's a Lenovo Thinkpad L15 Gen2. Right now I am under Windows, I have both OS installed.

    I am facing a big problem that may be easy to solve for someone with correct expertise. Lan card works perfectly under Windows but under Ubuntu 18.04 LTS nothing happens when I plug the ethernet cable. It's this device: Intel Ethernet Connection I219V Product Specifications

    If someone can help me to make it work, I will really appreciate it. My wifi is not working too, it's this device 'Realtek rtl8852ae'. I am more concerned about my lan card than the wifi one but if it's an easy one I'll be grateful for your help.

    Thanks in advance,

    Hope you can help me.

    Matias

  2. #2
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    Re: Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

    Please run and post the exact response to the terminal command:

    Code:
    sudo modprobe e1000e && dmesg | grep e100
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  3. #3
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    Re: Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

    Thanks for your answer. I ran the command and this is the response:

    [ 1187.887344] e1000e: unknown parameterr 'dmesg' ignored
    [ 1187.887395] e1000e: Intel(R) PRO/1000 Network Drive - 3.2.6-k
    [ 1187.887396] e1000e: Copyright(c) 1999 - 2015 Intel Corporation.

    Hope you can keep helping me.

    Cheers

  4. #4
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    Re: Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

    Let's dig a bit deeper:

    Code:
    lspci -nnk | grep 0200 -A3
    ls /etc/modprobe.d
    sudo dkms status
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  5. #5
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    Re: Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

    matias@matias-ThinkPad-L15-Gen-2:~$ lspci -nnk | grep 0200 -A3
    00:1f.6 Ethernet controller [0200]: Intel Corporation Device [8086:15fc] (rev 20)
    Subsystem: Lenovo Device [17aa:508f]
    04:00.0 Non-Volatile memory controller [0108]: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981 [144d:a808]
    Subsystem: Samsung Electronics Co Ltd Device [144d:a801]
    matias@matias-ThinkPad-L15-Gen-2:~$ ls /etc/modprobe.d
    alsa-base.conf blacklist-modem.conf
    amd64-microcode-blacklist.conf blacklist-oss.conf
    blacklist-ath_pci.conf blacklist-rare-network.conf
    blacklist.conf intel-microcode-blacklist.conf
    blacklist-firewire.conf iwlwifi.conf
    blacklist-framebuffer.conf
    matias@matias-ThinkPad-L15-Gen-2:~$ sudo dkms status
    [sudo] password for matias:
    sudo: dkms: command not found
    matias@matias-ThinkPad-L15-Gen-2:~$


    thank you!!

  6. #6
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    Re: Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

    Intel Corporation Device [8086:15fc] (rev 20) Subsystem: Lenovo Device [17aa:508f]
    It's definitely driven by e1000e.

    Let's see what's going on on the PCI bus:

    Code:
    sudo dmesg | grep 1f.6
    I wonder if this is the issue: https://bbs.archlinux.org/viewtopic.php?id=191981 Please try turning off Wake-on-Lan in Windows.
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  7. #7
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    Re: Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

    I read the link you shared. I think it's not that problem because first boot after installing wasn't working. In the thread you sent lan card was working until first reboot. Anyway I will try that solution just in case.

    Here is the result of the command you sent me:
    matias@matias-ThinkPad-L15-Gen-2:~$ sudo dmesg | grep 1f.6
    [sudo] password for matias:
    [ 0.011879] BRK [0x1fb601000, 0x1fb601fff] PGTABLE
    [ 0.011880] BRK [0x1fb602000, 0x1fb602fff] PGTABLE
    [ 0.011881] BRK [0x1fb603000, 0x1fb603fff] PGTABLE
    [ 0.011913] BRK [0x1fb604000, 0x1fb604fff] PGTABLE
    [ 0.011914] BRK [0x1fb605000, 0x1fb605fff] PGTABLE
    [ 0.012061] BRK [0x1fb606000, 0x1fb606fff] PGTABLE
    [ 0.012095] BRK [0x1fb607000, 0x1fb607fff] PGTABLE
    [ 0.012141] BRK [0x1fb608000, 0x1fb608fff] PGTABLE
    [ 0.559697] pci 0000:00:1f.6: [8086:15fc] type 00 class 0x020000
    [ 0.559753] pci 0000:00:1f.6: reg 0x10: [mem 0xae500000-0xae51ffff]
    [ 0.559977] pci 0000:00:1f.6: PME# supported from D0 D3hot D3cold
    matias@matias-ThinkPad-L15-Gen-2:~$

    Thanks!!

    EDIT: I didn't even had Windows installed the first time, and lan card wasn't working. First time I installed ubuntu 18.04, then tried with 16.04, then windows to see if hardware was fine, and once I had windows working I installed 18.04 again


    EDIT 2: Wake on lan was disabled. Tried enabling it and rebooting but still doesn't work. Also tried disabling it again and rebooting but didn't work
    Last edited by bubbabubbarda; August 20th, 2021 at 06:15 PM.

  8. #8
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    Re: Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

    I notice this in your readings:
    PME# supported from D0 D3hot D3cold
    I was reminded of this post: https://askubuntu.com/questions/1204...256167#1256167

    So I have got it working HUZZAH! but im still a bit confused as to why it all blew up. So in my BIOS there was some D3Cold settings which were enabled, I disabled them and suddenly it all started working when I booted up.
    Would you please check for D3cold settings in your BIOS/EFI and try disabling them?
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  9. #9
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    Re: Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

    There is no D3Cold setting in the BIOS, looked everywhere and also looked for similar things but there is nothing.

    I really appreciate the time you are taking to help me.

  10. #10
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    Re: Lenovo thinkpad L15 gen2 ethernet not working in ubuntu 18.04

    Ok I have some news. Tried installing Ubuntu 20.04 LTS and lan card is working fine. Wifi is not working but I am pretty sure it's an easy fix. First I need to check in my new job if I am allowed to use 20.04 version, because on the list they sent me only 16.04 and 18.04 were present. If it is possible then I would appreciate some help for making wifi work. If not I will have to solve 18.04 problem, but maybe they can help me too.

    Thank you very much chili555 for your help. I'll post news once I have them.

    Cheers,

    Matias

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