Questions tagged [interface]

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Ubuntu network interfaces

So on my laptop I have two interfaces enp1s0 and wlp2s0 and if I want to use either one of them I have to run ifconfig x down on the other. For example if I don't do that to enp1s0, it shows that I'm ...
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Why do I have eth0 interface? [closed]

I have laptop with ParrotOs installed in it not with Windows, but only ParrotOS. So it has Wifi Card built in which is usual . So my terminal should be displaying only wlan0 and lo in interfaces. Why ...
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Create a bridge between tap and ethernet interfaces

I've a (Ubuntu) Linux machine that hosts the Android emulator. I'm trying to create a bridge between an ethernet interface and a tap interface that I created. I need this tap interface to make the ...
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1answer
49 views

Gnome Glich | graphical interface error

I really have no idea what has happened, Ubuntu has been working fine since I installed it, and just today, browsing the internet, it began to have errors when you showed images, first I thought it ...
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What causes “RTNETLINK answers: No such process” when using ifdown command?

I am working with a 4-port NIC and I want to turn off all interfaces but one. I don't know if it is a problem or not, but when I turn off the third and the fourth interfaces with the ifdown command, ...
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How to make Network Interface can be use for specific user using UFW?

Suppose I have 2 user, user1 and user2 and I have 2 network interface eth1 and eth2 How to make user1 ONLY can use eth1 and user2 ONLY can use eth2? I see couple of guide many of them are recommend ...
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How do a linux application knows, which physical interface it can use?

I am new to writing a Linux application. From a developer's perspective, How do a linux application knows, which physical interface it can use to send data to remote application? Do we need to ...
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Can't connect to localhost after switching to WICD

I'm using Ubuntu 20.04 and, due to my Wifi often cutting out, I decided to disabled network manager and install WICD instead (using this tutorial). It works great, and my Wifi doesn't cut out anymore. ...
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24 views

Route traffic through interface x based on destination ip

My computer has access to two different networks. With ethernet cable everything is routed through the company proxy server which blocks some services. But I also have an wifi-network which is ...
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30 views

** socat[8592] E connect(5, AF=1 “\0/tmp/dbus-6LCOz2lgUY”, 23): Connection refused**

I am a BEGINNER with Ubuntu (Linux). I am trying to create an independant network namespace (that I downloaded here : https://github.com/Lekensteyn/netns) in order to capture Internet traffic without ...
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VLC 3.0.8 Top menu bar is missing on Xubuntu 18.04

Running Adapta theme, and a fresh 18.04 install the top menu bar seems to be missing. The "minimal view" in tools > preferences only removes the bottom bar. How do I add the top menu ...
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After setting wifi interface to monitor mode the GUI sets it back to managed mode

I used the below commands to set the interface in monitor mode. Everything works, but after a few seconds Ubuntu sets it back to managed mode. How can I disable that? sudo ifconfig wlan1 down sudo ...
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49 views

No DHCP or proxyDHCP offers were recived

I'm trying to install a server for multiple machines, already did the main steps, but when I try to turn on a machine, it keeps loading DHCP and then shows the error below. What seems to be the ...
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182 views

Can't run ipv6 tunnel - add tunnel “sit0” failed: No buffer space available

I stack with the error "add tunnel "sit0" failed: No buffer space available". /etc/network/interfaces auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp iface eth0 ...
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2answers
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What is meant by no wireless extension?

Whenever I type iwconfig. Some of the network interface cards show no wireless extension. What does it possibly mean ?
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Ubuntu IPv6 route not work on multiple interfaces

I'm using multiple router but only default interface has IPv6 connection. I can make multi interface work on IPv4 by command as this guide: https://lartc.org/howto/lartc.rpdb.html ip route add default ...
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1answer
108 views

Does anyone have any instructions as to how I can randomize my Mac Address on Ubuntu 20?

The problem I’m running into is randomizing my MAC address which is tied to my Ethernet interface name (enx503eaa292ae3; just an example address btw). Whenever I type macchange -r , I get “interface ...
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double tagging network Interfaces … failed if not auto is used

I do have a huge linux router setup. there are 3 real IFs and ~ 200 bridges with IPs and ubuntu takes to long to bring them up during boot phase.. I though no worries and removed the auto ens19.xxx ...
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237 views

Network interfaces not detected on 20.04

I am using LTS version 20.04 and for some reason the NetworkManager service disappeared from the system. I manually installed Network Manager service, but still cannot see a network interface detected....
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1k views

Ubuntu Server 20.10 - virtual interfaces in netplan

I am trying to add a virtual interface to a bare metal Ubuntu Server 20.10 installation. I've read that in pre version 20 this wasn't possible in netplan, and that people were reverting to ifup/ifdown....
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Ubuntu 18.04 with 2 interface. Netplan route not working

Here is my netplan yaml file. network: ethernets: ens160: dhcp4: no dhcp6: no addresses: [172.10.10.181/24] gateway4: 172.10.10.254 ...
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For a bridge, What is the difference between port & interface?

Below command: ~$ lsb_release -a No LSB modules are available. Distributor ID: Ubuntu Description: Ubuntu 18.04.5 LTS Release: 18.04 Codename: bionic ~$ ~$ ~$ ~$ ~$ sudo ovs-vsctl add-br ...
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1answer
264 views

Disable tab preview / thumbnail on bottom panel? - Ubuntu 20.04 Mate

Since the upgrade to 20.04, the version of GNOME I was using as the interface was no longer supported very well and MATE seems the most similar to it, so that is what I have switched to. One of the ...
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111 views

create HDLC interface in linux using serial port

I have modified MAX485 board (to work in sniff mod I deleted a terminator resistor) connected to Arduino. This Arduino connected to raspberry pi via USB. I probated this on Modbus/RS485 using IOninja ...
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Can't find the name of wireless interface after installing Ubuntu 20.04 [duplicate]

I'm following this tutorial in attampt to connect my laptop to WIFI after installing Ubuntu 20.04 LTS. However, I run iwconfig in the terminal and it only returns: lo no wireless extensions. ...
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In One Day Both WI-Fi and Cable Internet Connection is Gone for Good 'unknown host' Following the Update to Kernel 4.15.0-125

I am using a triple boot (Ubuntu Xenial 16.04, WIndows 7 & macOS High Sierra) 2018 hardware and still using Ubuntu 16.04 for more than 2 years now. I did install in early 2018 a Wi-Fi card based ...
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1answer
50 views

Static IP forcing route to interface that is not connected to network

I am setting up a kiosk type system that some times connects to a specific ethernet source with a static IP and other times connects to a variety of wifi networks via wpa_supplicant. Once the system ...
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1answer
39 views

topspin interface crash on ubuntu 20.04

Recently, when using Ubuntu 20.04 to run topspin 3.2, the topspin can start normally. However, when I click the button on the software interface, the software interface will crash and the terminal ...
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1answer
394 views

RFID reader ubuntu 20.04

I got my hands on one RFID reader. It works as a simple keyboard input. So if i open texeditor and scan some RFID it prints the code as text =) I install RFDump and i have a problem finding serial ...
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119 views

eno1 interface has disappeared, ethernet 'unclaimed'

I'm using Ubuntu 20.04.1 LTS which uses NetworkManager to manage internet connections. For a while, everything was fine with my computer - ethernet worked as plug & play - but recently I created a ...
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99 views

Gnome interface glitch after suspend

I get the following graphical glitch when I open my laptop after suspension: It can be solved by restarting Gnome with [alt+f2 - r], but I came here to ask you if there's a definitive solution to ...
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51 views

How to configure static IP address on Ubuntu 16.04 LTS from GUI interface?

How to configure static IP address on Ubuntu 16.04 LTS from GUI interface?
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1answer
700 views

How do you use USB audio interface on Ubuntu to begin recording music? Using Focusrite Scarlett Solo device

I installed Ubuntu but cannot find anywhere on the system, a link to the USB audio interface device. Where would it possibly be? How do I find it and begin to use it to create my own music recordings?
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Open-GL issues with 20.04+450/455 driver. Want easy access to 440. Make 440 available again via “Additional Drivers”/“ubuntu-drivers devices” command!

It's obvious from even a cursory search of the internet that the nvidia driver 450 (& follow-on 455) have serious issues. That's to be expected from time to time. What's not to be expected (or ...
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Is my reminder area broken, or is there no way to click on reminders to get to my calendar?

I am having quite a difficult time getting set up on my Ubuntu/Gnome system in a way that actually reminds me of upcoming events. Since everything is on Zoom, Webex, Blackboard, Canvas, Skype, etc ...
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Why my power buttons section option (on top right most corner) changed into pause button?

My keyboard was having problem and now the power button section is missing and in place of it there is pause option (like when playing video). I have latest ubuntu version (I guess 18.04?). But, as I ...
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36 views

Mouse selection broken

I'm having a strange problem where the left mouse button doesn't work properly when dragging a window, selecting text, etc. It "releases" either immediately or after at most a couple of ...
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2answers
106 views

Why when I add a new network interface and try to use another interface it times out?

I have two interfaces at the moment wifi and wired when I plug the wired one I can no longer use wifi (wlp4s0) if I try to do curl --interface wlp4s0 (or 192.168.1.2) ifconfig.me for instance It ...
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82 views

Add static ip interfaces with netplan

I am currently trying to add 2 network interfaces to my ubuntu machine via netplan (ubuntu -> proxmox -> vmware). Both with static ip addresses. My .yaml file: network: version: 2 renderer: ...
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Internet lost after adding br0 to interface setting in ubuntu

Thanks in advance. I am trying to install KVM and want to run virt-manager for which i need a bridge to connect with it. After editing bridge in interface file the file looks like below. # interfaces(...
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Bug of tiny text interface when computer starts [duplicate]

All of a sudden, when the computer started, the log in screen was strange and the text almost unreadable so small it was. I typed the password and all the system text remained very tiny and unreadable....
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82 views

Glitches when trying to updating the “gnome-shell-extension-desktop-icons”

So, a new version of "gnome-shell-extension-desktop-icons" has came out with features that i want, like being able to drag files with your mouse into your browser. But when i've installed ...
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1answer
179 views

Ubuntu 18.04 with Apogee ONE audio interface, Sound and PulseAudio show the ONEv2 Analog Stereo flashing each second but cannot select it

How to select the Apogee ONEv2 device for mic input? It's flashing but unable to select it. It was selectable back in 2009 according to this post: Apogee ONE works with Linux!! (partially). It is ...
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34 views

Top bar in GNOME hides information

As you can see in my screenshot, the width of the top bar is sufficient to fit in all the information: texts, icons and graphs. Yet it seems to be implied that the top bar should not go beyond a ...
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12answers
12k views

Ubuntu 20.04 interface font too small after restart, even with high scaling factor

So I was configuring VS code on my Notebook when suddenly I noticed that my interface font got really small on my desktop, terminal and files. I use Gnome Tweaks Tool to increase my scaling factor to ...
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1answer
4k views

cannot find /etc/network/interfaces file, doesn't exist

First of all sorry if the question is unnecessary, I'm still a newbie. In my ubuntu 20.04 install, I want to see the /etc/network/interfaces file, yet it doesn't exist. This is the content of my /etc/...
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1answer
26 views

Restore default KDE launch button

Previously Kubuntu had the default KDE button of gears with the letter K. Later Kubuntu default theme's button changed to the Kubuntu logotype. How can I change this application menu button back to ...
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login issue in Ubuntu 18.04 then can only see the files from the terminal

The login interface looks blurred and I can not detect the login password box. However, I did a hard power off, then restart and blindly entered the password, so the monitor opened to the desktop as ...
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1answer
2k views

Netplan Interface Disappears on Ubuntu 20.04

I am running 20.04.1 LTS on an Intel NUC, and my wired Ethernet has just disappeared. It has been working fine for several months using interface enp3s0 with the following netplan file (/etc/netplan/...
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1answer
17 views

Right-click, curser interaction issues, Ubuntu 18.04

Running Ubuntu 18.04.5 on HP EliteBook. Seemingly at random my curser has stopped interacting with much of the interface/screen & my right clickbutton has stopped working entirely with right click ...

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