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Very Slow Download Speed Ubuntu 20.04 Solving

October 6, 2021 | By the+gnu+linux+evangelist.

Fixing System

  1. 2. Installing Requirement

    Then to Install Required Software
    Run:

    sudo apt install ethtool

    Authenticate with the User Admin Pass.
    If Got “User is Not in Sudoers file” then see: How to Enable sudo.

  2. 3. Looking up Interface ID

    Find out Network Device ID
    Simply play:

    ifconfig -a

    And in the output you should recognize your Interface Identifier:

    ifconfig

  3. 4. Fixing Network

    Now to Fix Network Interface
    Run:

    sudo ethtool -s [DEVICEID] speed 1000 duplex full autoneg on

    So for instance:

    sudo ethtool -s enp4s0f0 speed 1000 duplex full autoneg on

    Auto-Negotiation is a mechanism by which a device automatically chooses the best performing transmission mode based on its counterparts’ characteristics.
    And the full-duplex mode enable to send and receive packets simultaneously.

    4. Thanks to: phoenixnap.com


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