Questions tagged [networking]
Computer networking is the connection two or more computing devices for transmitting and sharing data. The devices use common communication protocols over a physical or wireless connection. Use this tag for questions about managing and using network connectivity on an Ubuntu system.
2,573
questions
406
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43
answers
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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 ...
26
votes
5
answers
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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
- 261
25
votes
9
answers
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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 ...
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86
votes
3
answers
228k
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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 ...
- 1,255
32
votes
2
answers
129k
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 ...
- 633
26
votes
4
answers
22k
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 ...
- 507
63
votes
1
answer
120k
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 ...
- 2,215
43
votes
4
answers
149k
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 ...
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42
votes
3
answers
255k
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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
...
- 521
86
votes
7
answers
94k
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 ...
- 1,041
164
votes
6
answers
50k
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 ...
- 2,103
165
votes
12
answers
140k
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 ...
- 2,165
79
votes
5
answers
91k
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 ...
- 1,360
70
votes
1
answer
185k
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 ...
- 143k
59
votes
5
answers
183k
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 ...
- 752
2
votes
0
answers
7k
views
Ubuntu 20.04 Wifi Keeps Dropping [duplicate]
I recently moved and set up my system with a new wifi router. Since then, my Ubuntu randomly loses wifi every 5-10 minutes. I have to turn off the wifi setting on my computer and turn it back on to ...
44
votes
6
answers
98k
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 ...
- 87.1k
30
votes
5
answers
95k
views
Can't get RTL8125B working on 20.04
So I did a fresh install of Ubuntu 20.04 on a computer with the new RTL8125B Realtek network card and I cannot get the network to work.
I was very suprised since this is supposed to be the new feature ...
- 403
124
votes
9
answers
399k
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 ...
- 2,624
67
votes
4
answers
351k
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 ...
- 901
8
votes
1
answer
20k
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 ...
- 255
328
votes
18
answers
2.1m
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 /...
- 4,812
24
votes
2
answers
69k
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 ...
- 353
16
votes
1
answer
23k
views
Intel Wifi 6 AX210 - WiFi not working after Update
After the latest updates (Terminal: sudo apt update & upgrade) my WiFi suddenly didn't work anymore.
I did a fresh installation including all applications necessary for me and again did not work ...
- 173
23
votes
5
answers
184k
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 ...
- 561
17
votes
3
answers
52k
views
Connect two computers with SSH in a home LAN
I have two ubuntu computer shared the same wifi and desire to reach another from one's terminal.
First create an user on the second computer named "Second" and hostname "Algorithms"
Then tried to ...
- 595
140
votes
3
answers
230k
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 ...
- 5,751
304
votes
6
answers
243k
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-...
- 10.3k
109
votes
10
answers
209k
views
Ubuntu 20.04 Network Performance Extremely Slow
I just upgraded from Ubuntu 18.04 to 20.04 on one of the Dell XPS 13 machines, and the network performance is abhorrent. Internet speed is very fast from a google speed test (>300Mb/s for both upload ...
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49
votes
3
answers
208k
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 ...
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39
votes
5
answers
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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 ...
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34
votes
7
answers
209k
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 ...
- 485
13
votes
10
answers
55k
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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 ...
- 1,785
7
votes
3
answers
19k
views
how to setup ubuntu that fstab runs after network is connected?
right now
I have setup /etc/fstab like this:
//192.168.5.167/H /mnt/ssd cifs credentials=/root/.smbreds,noauto,x- systemd.automount 0 0
I want to set it up like first network should be connected ...
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72
votes
7
answers
229k
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 :...
- 1,114
57
votes
6
answers
153k
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 ...
- 1,664
825
votes
22
answers
1.7m
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?
- 8,729
23
votes
6
answers
69k
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 ...
- 485
94
votes
6
answers
111k
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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' ...
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61
votes
8
answers
566k
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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 -...
- 611
31
votes
4
answers
50k
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 ...
- 785
12
votes
2
answers
18k
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 ...
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75
votes
7
answers
217k
views
Ubuntu 18.04: switch back to /etc/network/interfaces
Starting sometime around Ubuntu 18.04, the Ubuntu devs stopped using the classic /etc/init.d/networking and /etc/network/interfaces method of configuring the network and switched to some thing called ...
- 1,044
28
votes
3
answers
110k
views
How to install TP-LINK Archer T4U driver?
I bought the wireless adapter to use with a computer without internet access but I can't figure out how to install it with just a USB with the driver on it. I've read a few articles on how to install ...
- 283
13
votes
4
answers
24k
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
...
- 285
3
votes
1
answer
30k
views
Intel AX201 Wi-Fi 6 is not working on Ubuntu 21.04
I'm trying to learn Linux and having trouble with wifi. I am running Ubuntu 21.04 with 5.11.0-22-generic kernel. I have no options under the network tab in settings for wifi as if my wifi card is ...
- 33
2
votes
1
answer
2k
views
Creating additional Virtual Host Ubuntu Server
I have currently one website running perfectly on my LAMP server (Ubuntu Server 16.04.3).
I now would like to add another one to the server. So i first went to the /etc/apache2/sites-available file ...
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335
votes
17
answers
640k
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 ...
- 4,039
56
votes
8
answers
267k
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 ...
- 661
36
votes
6
answers
93k
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 ...
- 1,101