Questions tagged [networking]

Managing and using network connectivity on a Ubuntu system

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341
votes
43answers
1.5m views

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 ...
25
votes
3answers
44k views

Installing Wi-Fi driver for Realtek Semiconductor RTL8723DE Device [10ec:d723]

How do I install Wi-Fi drivers for Realtek RTL8723DE device in Ubuntu 16.04? lspci -v | grep -i network 02:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device d723
24
votes
4answers
17k views

Realtek RTL8723BE Wi-Fi incredibly weak

I have a HP 14-AN001NA laptop. It came with Windows 10 installed on which the Wi-Fi worked fine anywhere in the house. However I removed Windows 10 and installed Ubuntu 16.04 instead and since I ...
17
votes
6answers
48k views

Wi-Fi not working on Lenovo ThinkPad E570 (Realtek RTL8821CE)

We just bought a Lenovo ThinkPad E570 (which is supposed to have the Intel 8265 for wireless). This laptop was bought in part because it is certified to run Ubuntu and as such to me at least it would ...
30
votes
1answer
113k views

How to install Broadcom wireless drivers offline?

I have installed Ubuntu alongside Windows 8.1. But the wifi is not working in Ubuntu (perhaps the drivers are not present), which worked fine in windows. Also I cant connect with Ethernet since my ...
58
votes
1answer
107k views

Ubuntu GNOME 17.04: wi-fi not working — mac address keeps changing?

My Panda USB wi-fi adapter works just fine on 16.10, but when I try to connect to my wi-fi router in 17.04, GNOME network manager reports "Connection failed." I did some tinkering, and noticed that my ...
68
votes
3answers
175k views

How to share files through the local network?

I have a desktop (Ubuntu 13.04 & Win 7 Home Premium) and a Laptop (Ubuntu 12.04), both having WiFi adapters. I also have a WiFi router connected to internet which both my computers can access. I ...
25
votes
3answers
98k views

How to install Wi-Fi driver for Realtek RTL8821CE on Ubuntu 18.04? [duplicate]

I'm trying to install drivers for my Wifi on my HP All-in-one desktop. I've been told to show the output of the command "sudo lshw -C network" so here it is: *-network description: Ethernet interface ...
41
votes
4answers
140k views

Wifi problems with rtl8723be in Ubuntu 14.04

I have dual booted my Windows 8 laptop with Ubuntu 14.04. The wifi driver is Realtek rtl8723be. It didn't use to work but I updated the kernel to 3.18 and reinstalled the driver and that seemed to ...
85
votes
7answers
86k views

Last upgrade crashes network manager (no internet connection, no applet)

While upgrading today, something caused my wireless network manager to disappear. Not even connecting via wired connection. This error is being shown by files: **(nm-applet:2716): WARNING **: Could ...
152
votes
10answers
123k views

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 ...
152
votes
6answers
44k views

Best way to cache apt downloads on a LAN?

I have multiple Ubuntu machines at home and a pretty slow internet connection, and sometimes multiple machines need to be updated at once (especially during new Ubuntu releases.) Is there a way where ...
121
votes
9answers
386k views

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 ...
79
votes
5answers
90k views

Wireless networking not working after resume in Ubuntu 14.04

[Update]: The same problem exists in Kubuntu and is solved in the same manner. [Solved]: By applying the following command nmcli nm I got the following: Before suspend RUNNING STATE ...
64
votes
1answer
160k views

How do I setup an Icecast server for broadcasting audio in my network?

Broadcasting the output of the soundcard as an internet radio stream is a reliable way to stream audio in a network. This can nicely be used to e.g. transmit audio in a wireless LAN to another ...
56
votes
4answers
278k views

Changing Network Interfaces name Ubuntu 16.04

I tried to change network interfaces name on this new Ubuntu 16.04 LTS version but doesn't have the /etc/udev/rules.d/70-persistent-net.rules. So, I tried to use /lib/udev/write_net_rules but it not ...
42
votes
5answers
90k views

How do I change / spoof my MAC address and easily switch between multiple ones?

My router can do port-forwarding based on MAC addresses. That is, a specific MAC will get a specific IP, for which I can configure a set of ports to be forwarded. In order to easily change that set of ...
13
votes
10answers
50k views

Wireless Network in Virtualbox

I just installed my first Ubuntu Server (12.04) instance and immediately ran into the following problems: Running apt-get install or update fails (see below) Running ifconfig produces peculiar IP ...
13
votes
2answers
28k views

How to set a domain to ip address?

You can reach this IP address 2.186.116.46 (if my computer is online). I want to assign a domain to it so I wonder how is that possible when I have no DNS? I do own my domain which is ".com". My IP is ...
113
votes
2answers
161k views

Why is my network interface named enp0s25 instead of eth0?

A lot of my scripts stopped working after installing Ubuntu 15.10 and I have trouble remembering this new name as I was used to ethx and wlanx for years. Is there a reason for this change? Do I have ...
8
votes
1answer
19k views

Ubuntu 14.04 Wireless not working: no network interface. Atheros [168c:003e] device

I just installed Ubuntu 14.04.3 LTS after installing windows 10 in my new VN7-571G and the wireless is not working. It never had: even during the installation it was not recognized. I run a script to ...
252
votes
18answers
1.6m views

How to restart the networking service?

I tried to use sudo service networking restart and sudo /etc/init.d/network restart but they both crash the window manager and I can no longer use my keyboard for input into X. when I use the /...
39
votes
5answers
158k views

Ubuntu 14.04 Server - WiFi WPA2 Personal

I just installed Ubuntu 14.04 Server and cannot get wifi configured correctly to work with WPA2 personal and could use some help. There was a simple wizard during install where I selected my SSID ...
21
votes
4answers
169k views

Drivers for Broadcom BCM43142 on Ubuntu 14.04 (Trusty Tahr)

I am not able to install drivers for my Wi-Fi + Bluetooth card (Broadcom BCM43142). What I have done till now: I have tried using the drivers at this website. I tried following the instructions ...
42
votes
2answers
152k views

How to transfer files between Ubuntu and Windows?

I wanna transfer some files from this PC with Ubuntu to a PC with Windows 7 I don't care how to do it (ftp, samba or whatever) I wanna know the steps, I searched a lot but I can't find anything that ...
662
votes
22answers
1.4m views

Command for determining my public IP?

If I check with google, I can see my public IP. Is there something on the Ubuntu command-line which will yield me the same answer?
56
votes
6answers
142k views

Network interface name changes after update to 15.10 - udev changes

I updated a virtual machine running Ubuntu server 15.04 to the just released new stable 15.10. There were no apparent problems, but after reboot the machine lost its network connection. lspci showed ...
30
votes
7answers
183k views

How to set static IP address?

I have configured network adapter of guest Ubuntu to work in a bridged mode so I could ssh to it from the host machine. The problem is that the guest Ubuntu ip address keep changing. Even though ...
24
votes
2answers
13k views

How can I fix Broadcom driver Wifi with 4.15.0-xx kernel on Ubuntu 16.04

I reinstalled a driver on Windows for Broadcom Network Adapter and after that my WiFi stopped working on Ubuntu(16.04) completely. I tried to reinstall drivers, using this commands: 1. sudo apt-get ...
35
votes
4answers
53k views

Ethernet device not managed

I am using Ubuntu 16.10 and recently I have not been able to connect to internet using Ethernet. The network manager shows device not managed. The WiFi network is working fine. I've tried the ...
14
votes
6answers
22k views

Unable to get wifi adapter working - clean 19.04 install - network unclaimed

My wifi card is an Intel® Wireless-AX200 (802.11/a/b/g/n/ac/ax), Bluetooth® 5, and bluetooth is working. I've tried following various guides, however these drivers are apparently yet to make it into ...
199
votes
5answers
139k views

How do I find out which process is eating up my bandwidth?

I think I'm being the victim of a bug here. Sometimes while I'm working (I still don't know why), my network traffic goes up to 200 KB/s and stays that way, even tough I'm not doing anything internet-...
57
votes
6answers
159k views

How to connect to WPA2/PEAP/MSCHAPv2 enterprise wifi networks that don't use a CA_Certificate, like Eduroam

My university uses WPA2 Enterprise encryption for students to login their wireless. In NetworkManager I have keyed in everything that they needed Security : WPA & WPA2 Enterprise Authentication :...
30
votes
4answers
37k views

14.04 - Network manager stopped working

When I started my laptop, there was no network service, and also no network icon in the top bar. It gives an error when I start OS like "Sorry, Ubuntu 14.04 experienced an internal error". When I ...
61
votes
7answers
53k views

How can you monitor total internet data usage across reboots?

Some broadband providers impose a monthly download limit, charging extra if you go over. It is also quite easy to exceed some of the lower limits just by installing/updating packages and 'normal' ...
29
votes
2answers
125k views

How do I install drivers for the Atheros AR8161 Ethernet controller?

I have installed Ubuntu 12.04-64 bit on my Lenovo IdeaPad laptop, and the wired Ethernet (LAN) connection doesn't work. Running the lspci -vv | grep Atheros command from the terminal shows me I have ...
52
votes
7answers
409k views

How to set static routes in Ubuntu Server?

I have used Ubuntu since Ubuntu 8.10; today I'm working with Ubuntu 12.04 Server. I am having difficulty keeping static routes on booting. I would usually put the route commands /sbin/route add -...
13
votes
4answers
23k views

Wireless disabled by hardware switch on an Asus X550V

I'm using Ubuntu 13.04 and I have ASUS X550V laptop. This is my rfkill list: 0: asus-wlan: Wireless LAN Soft blocked: no Hard blocked: no 1: asus-bluetooth: Bluetooth Soft blocked: no ...
8
votes
2answers
13k views

TP-LINK TL-WN823N Unable to connect to network

I have purchased a TP-LINK TL-WN823N (EU) V2.0 device, which is a USB device that should work as a Network Interface Card, allowing me to connect my computer to wireless networks. Unfortunately, I am ...
4
votes
2answers
5k views

Wi-Fi doesn't work on Ubuntu 18.04.1 LTS (RTL8723BE)

When I installed Ubuntu for the first time I had to do some work with the terminal because my Wi-Fi reception was lower than on Windows: echo "options rtl8723be ips=0 fwlps=0 ant_sel=1" | sudo tee /...
56
votes
8answers
258k views

Can't view Wifi networks after upgrading to Ubuntu 16.04

I can't view any wifi networks after upgrading to Ubuntu 16.04 from 14.04. This issue also occurred when trying to upgrade to Ubuntu 15.10. This is what my network window looks like: I have Broadcom ...
30
votes
6answers
77k views

How do I keep my Wifi from dropping out?

I have a System76 Gazelle, gapz8, running Ubuntu 14.04. My wifi keeps dropping out at random intervals. I have a new router, so I don't believe that's the issue, but I am in an apartment building, so ...
3
votes
1answer
3k views

Wifi signal strength weak on Ubuntu 18.04 with rtl8723be

I have the Realtek rtl8723be driver on my HP-Pavillion Notebook. While installing Ubuntu 18.04 LTS through plug-n-play option, I tried the following commands before actual installation: sudo ...
150
votes
1answer
280k views

What is the loopback device and how do I use it?

What are loopback and localhost? Why do they exist, what are they used for, and how would I use them?
203
votes
14answers
392k views

How do I clear the DNS cache?

I just updated the DNS record (ns1, ns2, ns3.myhostingcompany.com) for a site I've got hosted, but I still get the domain registrar parking page. I'd like to see if the problem is Ubuntu's cached DNS ...
28
votes
1answer
31k views

Problem with IPv6 sudo apt-get update/upgrade

I am using Ubuntu 16.04 Beta 2 at the moment and every time I try to update at home via sudo apt-get update or upgrade trough sudo apt-get upgrade I wont get any feedback. Even installing of anything ...
30
votes
4answers
80k views

How to share a wired internet connection via Wifi?

Can someone please help me with a complete step by step guide to share my internet connection (which is through a USB modem by ZTE) with my iphone 3G?
18
votes
2answers
20k views

Problems with networking after suspend [closed]

I have some problems on my Asus notebook since I upgraded to Ubuntu 13.10: Networking (wifi and lan) won't work after resume from suspend. I've seen many posts about this but they wouldn't work for ...
8
votes
2answers
28k views

Broadcom STA driver fails to install missing wl on Ubuntu 12.04.3 LTS / Linux 3.8

After installing Ubuntu 12.04 LTS on my HP Folio 13 I cannot get wireless to work. My kernel is 3.8.0-29-generic and my wireless module is a Broadcom BCM4313. After running rfkill list all: 0: hp-...
9
votes
3answers
23k views

Is there any way to install Atheros e2400 drivers?

I have a new motherboard: MSI Z170A GAMING M5. This motherboard has an Atheros killer e2400 Ethernet controller. When I do lspci -nn, I get: 03.00.0 Ethernet controller [0200]: Qualcomm Atheros ...

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