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Thread: the system loses the ethernet connection

  1. #1
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    Question the system loses the ethernet connection

    I have a new computer with a dual boot Win10/Ubuntu 20.04 and an unsupported RTL8125 2.5GbE Controller.
    After I found and installed the proper driver (for Ubuntu, of course), the Ethernet connection works well. However, when I am back on Ubuntu, after a Windows session, I cannot see my Ethernet connection again and I must re-install the driver to have it work. Then, it continue working fine until the next windows session.

    How can I make the driver more "stable"? The script to install the driver suggests to unload the old driver; I am not sure how to do it. Can it be the reason of the behavior?

    Thank you all

  2. #2
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    Re: the system loses the ethernet connection

    Is Wake-on-lan in Windows enabled and therefore controlling the ethernet? Please try disabling it.

    Let's see what drivers are loaded; please run and post:

    Code:
    lsmod
    Did you install the driver with dkms?

    Code:
    sudo dkms status
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

  3. #3
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    Re: the system loses the ethernet connection

    I think its not the driver. Deactivate quick start mode in Windows (or whatever its name is)

  4. #4
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    Re: the system loses the ethernet connection

    This ^^^ It's Fast Startup.

  5. #5
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    Re: the system loses the ethernet connection

    thanks

  6. #6
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    Re: the system loses the ethernet connection

    Quote Originally Posted by chili555 View Post
    Is Wake-on-lan in Windows enabled and therefore controlling the ethernet? Please try disabling it.

    Let's see what drivers are loaded; please run and post:

    Code:
    lsmod
    here it is:
    Code:
    Module                  Size  Used by
    binfmt_misc            24576  1
    nls_utf8               16384  1
    isofs                  49152  1
    rfcomm                 81920  4
    vboxnetadp             28672  0
    vboxnetflt             28672  0
    vboxdrv               516096  2 vboxnetadp,vboxnetflt
    ccm                    20480  9
    cmac                   16384  2
    algif_hash             16384  1
    algif_skcipher         16384  1
    af_alg                 28672  6 algif_hash,algif_skcipher
    bnep                   24576  2
    nls_iso8859_1          16384  1
    usblp                  24576  0
    snd_hda_codec_realtek   131072  1
    snd_hda_codec_generic    81920  1 snd_hda_codec_realtek
    ledtrig_audio          16384  1 snd_hda_codec_generic
    edac_mce_amd           32768  0
    snd_hda_codec_hdmi     61440  1
    snd_hda_intel          53248  5
    uvcvideo               98304  0
    snd_intel_dspcfg       24576  1 snd_hda_intel
    videobuf2_vmalloc      20480  1 uvcvideo
    kvm_amd                98304  0
    videobuf2_memops       20480  1 videobuf2_vmalloc
    snd_hda_codec         139264  4 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec_realtek
    videobuf2_v4l2         24576  1 uvcvideo
    amdgpu               5214208  32
    iwlmvm                393216  0
    kvm                   712704  1 kvm_amd
    snd_usb_audio         282624  3
    snd_hda_core           94208  5 snd_hda_codec_generic,snd_hda_codec_hdmi,snd_hda_intel,snd_hda_codec,snd_hda_codec_realtek
    videobuf2_common       57344  2 videobuf2_v4l2,uvcvideo
    snd_usbmidi_lib        36864  1 snd_usb_audio
    crct10dif_pclmul       16384  1
    snd_seq_midi           20480  0
    snd_hwdep              20480  2 snd_usb_audio,snd_hda_codec
    mac80211              905216  1 iwlmvm
    ghash_clmulni_intel    16384  0
    snd_seq_midi_event     16384  1 snd_seq_midi
    aesni_intel           372736  9
    iommu_v2               20480  1 amdgpu
    videodev              241664  3 videobuf2_v4l2,uvcvideo,videobuf2_common
    crypto_simd            16384  1 aesni_intel
    snd_pcm               114688  5 snd_hda_codec_hdmi,snd_hda_intel,snd_usb_audio,snd_hda_codec,snd_hda_core
    libarc4                16384  1 mac80211
    gpu_sched              36864  1 amdgpu
    snd_rawmidi            36864  2 snd_seq_midi,snd_usbmidi_lib
    mc                     57344  5 videodev,snd_usb_audio,videobuf2_v4l2,uvcvideo,videobuf2_common
    ttm                   102400  1 amdgpu
    cryptd                 24576  3 crypto_simd,ghash_clmulni_intel
    glue_helper            16384  1 aesni_intel
    btusb                  57344  0
    snd_seq                69632  2 snd_seq_midi,snd_seq_midi_event
    drm_kms_helper        217088  1 amdgpu
    btrtl                  24576  1 btusb
    rapl                   20480  0
    btbcm                  16384  1 btusb
    snd_seq_device         16384  3 snd_seq,snd_seq_midi,snd_rawmidi
    cec                    53248  1 drm_kms_helper
    btintel                28672  1 btusb
    iwlwifi               352256  1 iwlmvm
    rc_core                57344  1 cec
    snd_timer              40960  2 snd_seq,snd_pcm
    bluetooth             581632  31 btrtl,btintel,btbcm,bnep,btusb,rfcomm
    i2c_algo_bit           16384  1 amdgpu
    snd                    94208  29 snd_hda_codec_generic,snd_seq,snd_seq_device,snd_hda_codec_hdmi,snd_hwdep,snd_hda_intel,snd_usb_audio,snd_usbmidi_lib,snd_hda_codec,snd_hda_codec_realtek,snd_timer,snd_pcm,snd_rawmidi
    fb_sys_fops            16384  1 drm_kms_helper
    syscopyarea            16384  1 drm_kms_helper
    sysfillrect            16384  1 drm_kms_helper
    ecdh_generic           16384  1 bluetooth
    input_leds             16384  0
    joydev                 24576  0
    efi_pstore             16384  0
    wmi_bmof               16384  0
    k10temp                16384  0
    sysimgblt              16384  1 drm_kms_helper
    soundcore              16384  1 snd
    ccp                    98304  1 kvm_amd
    ecc                    32768  1 ecdh_generic
    cfg80211              778240  3 iwlmvm,iwlwifi,mac80211
    mac_hid                16384  0
    sch_fq_codel           20480  2
    parport_pc             45056  0
    drm                   552960  11 gpu_sched,drm_kms_helper,amdgpu,ttm
    ppdev                  24576  0
    lp                     20480  0
    parport                65536  3 parport_pc,lp,ppdev
    ip_tables              32768  0
    x_tables               49152  1 ip_tables
    autofs4                45056  2
    hid_logitech_hidpp     45056  0
    hid_logitech_dj        28672  0
    hid_generic            16384  0
    uas                    28672  0
    usbhid                 57344  1 hid_logitech_dj
    hid                   135168  4 usbhid,hid_generic,hid_logitech_dj,hid_logitech_hidpp
    usb_storage            73728  2 uas
    crc32_pclmul           16384  0
    r8125                 155648  0
    r8169                  77824  0
    i2c_piix4              28672  0
    nvme                   45056  3
    ahci                   40960  4
    xhci_pci               20480  0
    libahci                36864  1 ahci
    realtek                24576  0
    nvme_core             110592  5 nvme
    xhci_pci_renesas       20480  1 xhci_pci
    wmi                    32768  1 wmi_bmof

    Maybe I need to purge "r8169 " driver?

    [
    Quote Originally Posted by chili555 View Post
    ]Did you install the driver with dkms?
    no: by running the script
    Last edited by fabio61; March 19th, 2021 at 10:25 PM.

  7. #7
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    Re: the system loses the ethernet connection

    Quote Originally Posted by CelticWarrior View Post
    This ^^^ It's Fast Startup.
    I disabled fast startup right away, before installing ubuntu

  8. #8
    Join Date
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    Re: the system loses the ethernet connection

    Maybe I need to purge "r8169 " driver?
    Let's try an experiment first. From the terminal:

    Code:
    sudo modprobe -r 8169
    Is there any improvement? If so, blacklist it:

    Code:
    sudo -i
    echo "blacklist r8169" >>  /etc/modprobe.d/blacklist.conf
    exit
    "Oh, Ubuntu, you are my favorite Linux-based operating system" --Dr. Sheldon Cooper, Ph.D., Sc.D.

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