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I recently -- in reaction to pandemy -- installed a wired connection to my Ubuntu 18.04 laptop:

  • Dell XPS13 Intel Core i7-8550U CPU @ 1.80GHz × 4
  • ST: D61NHR2

Once I connect, quite rapidly, in a matter of minutes the computer stops working correctly: network connection is lost, system monitor window asks for wait or shut down but shut down not possible, etc. Needs an on/off button hard restart.

As seen here, I append the results of the command 

zzzzzzz@PDXP13-D61NHR2:~$ sudo lshw -C Network && lspci -knn | grep -i ether -A 3 && lsb_release -a && uname -a
  *-network                 
       description: Interface réseau sans fil
       produit: QCA6174 802.11ac Wireless Network Adapter
       fabriquant: Qualcomm Atheros
       identifiant matériel: 0
       information bus: pci@0000:02:00.0
       nom logique: wlp2s0
       version: 32
       numéro de série: 9c:b6:d0:92:35:73
       bits: 64 bits
       horloge: 33MHz
       fonctionnalités: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=ath10k_pci driverversion=5.3.0-45-generic firmware=WLAN.RM.4.4.1-00079-QCARMSWPZ-1 ip=192.168.1.4 latency=0 link=yes multicast=yes wireless=IEEE 802.11
       ressources: irq:143 mémoire:dc000000-dc1fffff
  *-network
       description: Ethernet interface
       identifiant matériel: 2
       nom logique: docker0
       numéro de série: 02:42:a3:d4:58:d8
       fonctionnalités: ethernet physical
       configuration: broadcast=yes driver=bridge driverversion=2.3 firmware=N/A ip=172.17.0.1 link=no multicast=yes
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1 Answers1

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My Dell USB-C to Ethernet + VGA + HDMI + USB hub had a faulty connection. I suspected the problem because an USB stick was not recognized, and I confirmed it when moving the network plug turned the network leds off.

I bought a new USB-C to Ethernet connector and the problem disappeared.

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