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Thread: Ubuntu 20.04.3 LTS network disconnects randonly

  1. #1
    Join Date
    Nov 2021
    Beans
    2

    Exclamation Ubuntu 20.04.3 LTS network disconnects randonly

    Hi,


    I'm using Ubuntu full update, and from time to time, my network just gets disconnected and reconnected automagicly. Every 10min or 5min or 2min, or even stays ok for 30min and gets back to it randomly.


    It happens with ethernet cable to the laptop or to the Dock Station also with wifi, the beaviaviour it's all the same.


    OS: Ubuntu 20.04.3 LTS x64


    My hardware:


    Laptop - HP Zbook Power G7
    i9-10885H
    64 GB DDR4-3200
    Intel UHD Graphics && NVIDIA Quadro T1000 with Max-Q Design (4 GB GDDR6 dedicated)
    2x 1 TB PCIe NVMe M.2 SSD
    Intel Wi-Fi 6 AX201 (2x2) and Bluetooth 5 combo, vPro
    Intel I219-LM GbE, vPro
    https://support.hp.com/lt-en/document/c06931915


    DockStatio - HP Thunderbolt Dock 230W G2 w/ Combo Cable
    Front: 1 USB-C™ port with data and power out (15W); 1 USB-C™ cable to connect to host system (0.7 meter cable length); Side: 1 powered USB 3.0 port; 1 combo Audio Jack; 1 Kensington lock slot; Back: 1 Thunderbolt™ port; 1 USB-C™ DisplayPort™ data and power out (15W) port; 2 DisplayPort™ ports; 1 VGA port; 2 USB 3.0 ports; 1 RJ45 port; 1 AC Adapter connector
    https://www.hp.com/us-en/shop/pdp/hp...th-combo-cable


    Can some please help troubleshoot this prob, just trow the commands need to get the info and i will post them.


    Thks in advance.


    r

  2. #2
    Join Date
    Nov 2021
    Beans
    2

    Re: Ubuntu 20.04.3 LTS network disconnects randonly

    Hi,

    Some info...

    sudo lshw -C network
    *-network:0 DISABLED
    description: Wireless interface
    product: Wi-Fi 6 AX201
    vendor: Intel Corporation
    physical id: 14.3
    bus info: pci@0000:00:14.3
    logical name: wlp0s20f3
    version: 00
    serial: xxxxxxxxx
    width: 64 bits
    clock: 33MHz
    capabilities: pm msi pciexpress msix bus_master cap_list ethernet physical wireless
    configuration: broadcast=yes driver=iwlwifi driverversion=5.11.0-40-generic firmware=59.601f3a66.0 QuZ-a0-hr-b0-59.u latency=0 link=no multicast=yes wireless=IEEE 802.11
    resources: irq:16 memory:e9230000-e9233fff
    *-network:1
    description: Ethernet interface
    product: Ethernet Connection (10) I219-LM
    vendor: Intel Corporation
    physical id: 1f.6
    bus info: pci@0000:00:1f.6
    logical name: enp0s31f6
    version: 00
    serial: xxxxxxxxxxx
    capacity: 1Gbit/s
    width: 32 bits
    clock: 33MHz
    capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
    configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.11.0-40-generic firmware=0.6-4 latency=0 link=no multicast=yes port=twisted pair
    resources: irq:150 memory:e9200000-e921ffff
    *-network
    description: Ethernet interface
    physical id: 2
    bus info: usb@4:1.3.3
    logical name: enx50814088859e
    serial: xxxxxxxxx
    size: 1Gbit/s
    capacity: 1Gbit/s
    capabilities: ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
    configuration: autonegotiation=on broadcast=yes driver=r8152 driverversion=v1.11.11 duplex=full firmware=rtl8153a-3 v2 02/07/20 ip=xxxxxxxx link=yes multicast=yes port=MII speed=1Gbit/s






    lspci | grep -i eth
    00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (10) I219-LM






    ifconfig
    enp0s31f6: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500
    ether xxxxxxxxxxxx txqueuelen 1000 (Ethernet)
    RX packets 0 bytes 0 (0.0 B)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 0 bytes 0 (0.0 B)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
    device interrupt 16 memory 0xe9200000-e9220000


    enx50814088859e: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
    inet xxxxxxxxx netmask 255.255.255.0 broadcast 172.16.252.255
    inet6 fe80::5281:40ff:fe88:859e prefixlen 64 scopeid 0x20<link>
    ether xxxxxx txqueuelen 1000 (Ethernet)
    RX packets 20182956 bytes 27181128718 (27.1 GB)
    RX errors 0 dropped 37829 overruns 0 frame 0
    TX packets 5241372 bytes 1435653385 (1.4 GB)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0


    lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
    inet 127.0.0.1 netmask 255.0.0.0
    inet6 ::1 prefixlen 128 scopeid 0x10<host>
    loop txqueuelen 1000 (Local Loopback)
    RX packets 10050 bytes 1026920 (1.0 MB)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 10050 bytes 1026920 (1.0 MB)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0


    vmnet1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
    inet xxxxxxxxxx netmask 255.255.255.0 broadcast 172.16.78.255
    inet6 fe80::250:56ff:fec0:1 prefixlen 64 scopeid 0x20<link>
    ether 00:50:56:c0:00:01 txqueuelen 1000 (Ethernet)
    RX packets 0 bytes 0 (0.0 B)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 1928 bytes 0 (0.0 B)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0


    vmnet8: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
    inet xxxxxxxxxxx netmask 255.255.255.0 broadcast 172.16.217.255
    inet6 fe80::250:56ff:fec0:8 prefixlen 64 scopeid 0x20<link>
    ether 00:50:56:c0:00:08 txqueuelen 1000 (Ethernet)
    RX packets 3582 bytes 0 (0.0 B)
    RX errors 0 dropped 0 overruns 0 frame 0
    TX packets 1928 bytes 0 (0.0 B)
    TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0




    sudo lshw -C CPU
    *-cpu
    description: CPU
    product: Intel(R) Core(TM) i9-10885H CPU @ 2.40GHz
    vendor: Intel Corp.
    physical id: 15
    bus info: cpu@0
    version: Intel(R) Core(TM) i9-10885H CPU @ 2.40GHz
    serial: To Be Filled By O.E.M.
    slot: U3E1
    size: 3031MHz
    capacity: 5300MHz
    width: 64 bits
    clock: 100MHz
    capabilities: lm fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp x86-64 constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp pku ospke md_clear flush_l1d arch_capabilities cpufreq
    configuration: cores=8 enabledcores=8 threads=16


    sudo lshw -C network | grep -i driver
    configuration: broadcast=yes driver=iwlwifi driverversion=5.11.0-40-generic firmware=59.601f3a66.0 QuZ-a0-hr-b0-59.u latency=0 link=no multicast=yes wireless=IEEE 802.11
    configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=5.11.0-40-generic firmware=0.6-4 latency=0 link=no multicast=yes port=twisted pair
    configuration: autonegotiation=on broadcast=yes driver=r8152 driverversion=v1.11.11 duplex=full firmware=rtl8153a-3 v2 02/07/20 ip=xxxxxxxxxx link=yes multicast=yes port=MII speed=1Gbit/s




    free -h
    total used free shared buff/cache available
    Mem: 62Gi 6,8Gi 5,2Gi 12Gi 50Gi 42Gi
    Swap: 46Gi 1,0Mi 46Gi




    swapon -s
    Filename Type Size Used Priority
    /dev/nvme1n1p2 partition 48828412 1280 -2






    dkms status
    nvidia, 495.44, 5.11.0-38-generic, x86_64: installed
    nvidia, 495.44, 5.11.0-40-generic, x86_64: installed
    veeamsnap, 5.0.1.4493, 5.11.0-38-generic, x86_64: installed
    veeamsnap, 5.0.1.4493, 5.11.0-40-generic, x86_64: installed

    uname -a
    Linux 5.11.0-40-generic #44~20.04.2-Ubuntu SMP Tue Oct 26 18:07:44 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux


    change

    Any ideas?

    tks
    Last edited by re8el; November 27th, 2021 at 01:13 AM.

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