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lewis4u
Asked: 2017-04-28 01:13:19 +0800 CST

Installing ubuntu server on laptop - can't recognize wifi card

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I am trying to install ubuntu server on my laptop and it doesn't recognize the wifi card on start of the installation. And i think it's because it is turned off. How can i turn it on without hardware switch?

update

I have managed to install it without wifi (that is my only nic) and turned it on after, but i don't have internet now. How to connect to my wifi network from command line?

I found that i need this wpasupplicant but i can't install it without internet. Maybe this can be found on iso image?

wireless

1 Answers

  1. Best Answer

    For starters, if your notebook does not have a hardware switch to enable/disable WiFi, there probably is an option in the BIOS or UEFI to do it.

    Now that you managed to install the system and have a working WiFi card, , you should use wpa_supplicant to setup the network. To do this, you edit the file /etc/wpa_supplicant/wpa_supplicant.conf so that it holds the information necessary to connect to your network. Examples can be found in the wpa_supplicant man pages, a minimal one would look similar to this:

    network={
    ssid=YourSSID
    key_mgmt=WPA-PSK
    psk=your_very_secret_passphrase
}

    Additionally, you need to set your /etc/network/interfaces to use the configuration for wpa_supplicant:

    auto wlan0
iface wlan0 inet dhcp
    wpa-conf /etc/wpa_supplicant/wpa_supplicant.conf

    Assuming your WiFi card is the network interface wlan0. Now, issue ifup wlan0 on the command line, and you should be fine.

    Edit: If you do not have wpa_supplicant installed, you can download the .deb package on another machine and install from a USB device or whatever possibility you have to move files onto that machine. The package and its dependencies can be found in the Ubuntu package archive.

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