Questions tagged [wireless]

Questions about using Wireless connections in Ubuntu. This tag is not limited to Wifi only.

What Questions Should Have This Tag?

Questions include:

  • Wireless printers
  • Wireless keyboards
  • Wireless mice
  • Other wireless devices

Basic Definitions

Bluetooth - Short range UHF, wireless technology

WLAN (Wireless [Local Area] Network) - A series of devices connected in a network configuration with at least 1 device being connected wirelessly.

Infrared Devices (IrDA) - Devices which communicate by transmitting signal via LEDs on the Infrared spectrum of light

802.11x (a, b, g, n, ac) - Standards by which specific wireless devices (commonly on network) comply. Depending on the end character specifies rate/frequency of transmissions.


Brief Introduction To The Subject

Wireless devices communicate by transmitting data over the air via light/radio waves. Depending on the specification certain devices will operate at differing frequencies (usually UHF or VHF). Many wireless networks will have a WAP (Wireless Access Point) through which devices can connect. These devices will use a wireless NIC (Network Interface Card), and often are set into a different subnet (in many business topologies).

Another way of connecting is Ad-Hoc, which is a full mesh form of connecting (all devices connect to each other directly). This can be a good way to connect for a small, or impromptu network, but does not function well in larger networks.

Most wireless peripherals (mice, keyboards, etc.) will use Bluetooth technology, because there is low cost, and relatively low power consumption versus other technologies.


Important Links For Learning More

13040 questions
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43 answers

Installing Broadcom Wireless Drivers

I'm having serious problems installing the Broadcom drivers for Ubuntu. It worked perfectly on my previous version, but now, it is impossible. What are the steps to install Broadcom wireless drivers for a BCM43xx card? I'm a user with no advance…
220
votes
4 answers

How to connect to WiFi from the command line?

Other posts seems to be addressing more complicated network connection issues from the command line. The Unity panel Network indicator/button doesn't respond too well sometimes - it keeps trying to connect to a network even when i click on…
cmo
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177
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6 answers

How to create a Wi-Fi Hotspot (in Access Point mode)?

How to setup an Access Point (AP) mode Wi-Fi Hotspot? Point to be noted: Wireless access points aren't the same as ad hoc networks. They differ significantly. In short, ad hoc networks aren't supported on newer devices and most Android, Windows…
Web-E
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166
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4 answers

How can I display the list of available Wi-Fi networks?

My Ubuntu laptop's Wi-Fi works fine on various Wi-Fi networks. But the list of available networks accessed from the toolbar icon of nm-applet no longer appears. I just see the known networks. The list of hidden networks also doesn't show any new…
Joshua Fox
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165
votes
12 answers

Wifi doesn't work after suspend after 16.04 upgrade

This particular version of the "doesn't work after suspend" came after upgrading to 16.04. It seems that the upgrade includes a Wicd applet (added to Metacity Classic Gnome task bar alongside regular network icon), but doesn't seem to work after a…
147pm
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11 answers

How do I create a WiFi hotspot sharing wireless internet connection (single adapter)?

I know how to create a hotspot when connected to a wired network, but when I am using internet from a WiFi connection, this disconnects the wireless connection the moment I activate the hotspot. In Windows I can use Connectify Hotspot, which enables…
149
votes
9 answers

How do I connect to a WPA wifi network using the command line?

So basically, I'd like to use iwconfig to connect to my wifi network when I'm not inside X. But I just don't see a way to do it in the man page. Any idea?
Ken Kinder
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5 answers

How to connect and disconnect to a network manually in terminal?

Since the network manager is troubling me so much I want to replace it (possibly wicd orNM from ppa:volanin). I do not know how to connect and disconnect to the network through the terminal without using network manager. I would like a command-line…
user7048
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140
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4 answers

Network service discovery disabled: What does this mean for me?

Every time at boot I get a message “Network service discovery disabled. Your current network has a .local domain, which is not recommended and incompatible with the Avahi network service discovery. The service has been disabled.” What does this…
132
votes
3 answers

Share wireless Internet connection through ethernet

I want to share the wireless Internet connection on my desktop with my old laptop, through ethernet. I have ticked the option "Make available to others" on both connections, on my desktop, but my laptop doesn't connect. Am I doing something wrong or…
129
votes
3 answers

My wireless/WiFi connection does not work. What information is needed to diagnose the issue?

Your situation You have successfully installed Ubuntu. You have just downloaded and booted Ubuntu live media. The latest LTS (see also HWE) or latest non-LTS release are preferred. See the list of Ubuntu releases that are currently supported.) You…
Wild Man
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124
votes
9 answers

16.04 LTS wifi connection issues with Realtek RTL8723BE adapter

I discovered several issues with wifi connection after installing 16.04 LTS. First, wifi doesn't reconnect normally after sleep or hibernation. Sometimes the network icon turns into a "up and down arrows"(I don't know what it is for) after waking…
aaa
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116
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8 answers

WiFi randomly disconnected on Ubuntu 18.04 LTS

I installed Ubuntu 18.04 LTS in this week and now I have a problem with wifi connection. The WiFi connection auto disconnected every 5 - 10 minutes but wifi signal is still fine. I did a search, found some answers for older versions of Ubuntu and…
109
votes
5 answers

A tool to measure signal strength of wireless

I want to know if there exists any command line option or GUI tool (Ubuntu 11.10) so that I can measure the strength of wireless signal at a given location. I have a house where the wireless is not easily accessible at all corners I want to know at…
108
votes
7 answers

How do I find out the name of the SSID I'm connected to from the command line?

Neither iwconfig nor iwlist seem to be able to do this for me.
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