Questions tagged [networking]

Managing and using network connectivity on a Ubuntu system

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Unstable wifi with Qualcomm Atheros AR9462 card and Ubuntu 22.04

I have a problem with my wifi connection which is slow and unstable. I use a Qualcomm Atheros AR9462 wifi card and ubuntu 22.04. Does anyone have any suggestions? Thanks you
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Network unreachable error meets when downloading theme by system theme tool

I try to use the system theme manage tool to download some new themes but failed. The error is Download of "xxx" failed, error: Network unreachable. I checked that I can access the theme ...
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Gnome VPN connecttion "add" button greyed

I know this topic has came up multiple times but none of the solutions I have seen so far have worked for me. I want to connect to my fritz vpn but when I go to add a new vpn connection and press &...
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Ubuntu 22.04 LTS - QEMU-KVM & NetPlan - Bridge interface with multiple VLANs

Previously, when I wanted to set QEMU-KVM on my Raspberry PI, I did the following commands to have a bridge interface and all other bridges on multiple networks for my VMs However, after upgrading to ...
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Screen freezes after connecting to wifi

I installed ubuntu 20.04.3 on my Asus laptop, every time I connect it to the wifi after a few minutes its screen freeze. I can't move the mouse cursor, it is completely crashed. What should I do to ...
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Unable to edit Network settings, Polkit error

I have a desktop PC with Ubuntu installed, with Static IP address edited. Before the reboot, Internet it's working without problems, i can access the Network settings without problem. But after the ...
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Error while uploading a file to Postman with some other fields with nodejs

I am getting the following errors when doing some changes but they never get resolved node:internal/fs/utils:670 throw new ERR_INVALID_ARG_TYPE(propName, ['string', 'Buffer', 'URL'], path); ^ ...
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CIFS connection to Windows 10 computer fails periodically

I am on a small network with an Ubuntu 20.04 desktop and a Windows 10 computer. Every morning on startup I connect Ubuntu to the Windows 10 computer with CIFS: sudo mount -t cifs -o username=[...
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Ubuntu Server 22.04 cannot assign static IP address using netplan

I'm running Ubuntu Server 22.04 on Oracle VM Virtual Box on a Windows 10 machine, and have the Bridged Adapter selected under Networking. I'm trying to assign a static IP address, and edited my 00-...
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Get a Ethernet alias running before being connected to a real network

I am trying to create an ethernet alias on a Linux machine running Ubuntu 20.04. It is wired in via ethernet to the main network and I managed to create the ethernet alias using ifconfig eth0:0 192....
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Connection with ubuntu.nl not possible anymore

Can anyone inform me what is happening with ubuntu.nl forum. We cannot login during the passed 2 weeks. Thanks, best regards
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Stuck on low resolution with missing network

This is a long and complex quest of issues which all seem to inter-relate. It starts with using my system as normal, and then installing and trying to run WoeUSB to create a Windows 10 boot disk to ...
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ssh: connect to host <usrname>@....org port 22: Connection refused

I am trying to use ssh to connect to a server and it worked fine just yesterday. However today it failed and when I tried to test with ssh localhost, it worked. Below is the output of the failure: ...
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How to Force Ubuntu to use a USB wireless usb network adaper, instead of the built in card

OKAY hey everyone, i typically dont use websites like this as i usually can find the answer myself but im seriously stumped. Basically whats happening is my wireless card doesnt have a linux driver so ...
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My ubuntu 20.04 wifi very slow

I just boot a new ubuntu 20.04.3, and when I restart my wifi gets slow, and sometimes it automatically disconnected: My ubuntu version 20.04.4 when already update What I have tried: reboot the ...
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View all previous IP logs/connections/etc

I'm not sure if this is a thing or not. I was wondering if for example someone got on my machine (say its on a vpn not on my home network) If someone had access to it somehow if they could view any ...
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Why can I receive Multicast DNS traffic even though UFW is enabled?

I was playing around with Python and Multicast to better understand the inner workings of the latter. At first I created a simple socket that listened to all multicast groups on port 5353 (MDNS). I ...
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ip link set dev up returns RTNETLINK answers: Invalid argument

I have a USB CAN device that create a network interface: $ ip addr 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 ...
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Problem with DWA-131

When I plug my DWA-131 device to my Windows machine, all goes allright(the DWA-131 has its own private ip address). My situation is: I want to manage DWA-131 through my parrot VM(and not from my ...
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wifi keeps switching to different network

I just installed Ubuntu 22.04 on a Dell Latitude 5500 laptop. I have 2 wifi networks, and every 30 minutes or so it will switch from one network to the other. I don't have this issue with any other ...
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Mount SMB error 22 and error 2

I am trying to mount an SMB share onto /mnt/local_share. I am able to view the drive in Nautilus and when I type CTRL-L I get the directory: smb://share_name;user@email.edu/lab_name The drive is ...
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Netplan - gateway has been deprecated

I newly installed Ubuntu 22.04 and configured netplan like this: network: version: 2 ethernets: ens18: addresses: - 10.10.0.101/24 - 2009:470:1099:...
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Which ping-like command to measure lowest-latency possible between two machine?

My task is to measure the network latency between 2 machines (both 1-way and 2-way are OK). The 2 PCs are in the same room, on the same network, and connected to the same router. When I use the ping ...
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Top Level Domain Will Not Load, Only Subdomains Will Load

I have posted about this problem before and temporarily though that I solved it but updating my dns server via dnsmasq, but that solution seems to have simply stopped working. Problem. example.com ...
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Lock txt-files accessible via network, same user

PC Ubuntu 20.04, "common" folder set to "local network share", Samba entry for 2. PC user added PC Ubuntu 22.04, get access to the "common" folder via Samba entry Share ...
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Can you enable SSH on Ubuntu Server automatically after installing?

The Raspberry Pi OS (formerly known as Raspbian) installer has a feature where you can enable SSH in your install so it opens an SSH server on startup. I'm running some servers on old computers I have ...
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How can I observe a G Cloud VM Ubuntu, instance while a consultant is connected to the GUI via Google RDP?

I have a Google Cloud Ubuntu VM instance setup, with GUI access, through Google Remote Desktop. A consultant is going to be doing work on this instance. How can I give him full access, while still ...
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Routing to subnet of a shared internet connection

Greeting, I have a mobile wifi router (192.168.8.1) and an Ubuntu PC Wifi(dhcp). I have purchased a LAN/WIFI router for playing with IoT devices. I set Ubuntu to share the internet connection and have ...
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systemd-resolved does not resolve dns names

So long as I had a single interface up getting its IP from a DHCP server things were working fine. I then connected a second interface and statically configured an IP address on it. Now dns resolution ...
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Internet DNS problems - Changing DNS doesn't seem to work

I'm on Ubuntu 22.04 LTS, connecting works fine on my home network but never properly connects on my school's network which utilizes MSCHAPv2. Using ping with an IP address works fine, but using "...
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Problems when VPN on

I've just upgraded to 22-04 LTS and whenever I turn on a VPN I run into a bunch of problems. CAJA won't launch just get a spinner with "starting home folder" which then goes but nothing ...
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Ubuntu22.04 Bluetooth connectivity issue

I have an old laptop HP pavilion g4 and have dual boot setup on it. The laptop has INTERNAL bluetooth + wifi combo adapter Qualcomm Atheros AR9485. Everything used to work fine in windows until a few ...
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Network interface names keeps changing

I am running Ubuntu 22.04 and have a USB LTE card. I am running create_ap to create an access point. The card essentially bridges my wireless to the LTE card to give internet to wifi clients. The ...
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No Wired section in network settings (20.04)

My wired internet connection is not working and I cannot access the wired section of the network settings. I have basically the same question as Wired option missing in Network Settings and many ...
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Unable to ping or access Virtualbox VM via bridged network

I have Windows in a Virtualbox VM and I'm trying to ping it but the VM is unreachable from my machine via the bridged network setting. Although I have full internet access and I'm able to ping the ...
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system ip still getting detected after using iptables and redsocks

Here is my redsocks.conf base { log_debug = off; log_info = on; log = "syslog:daemon"; daemon = on; user = redsocks; group = redsocks; redirector = iptables; ...
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Does anybody have working network-config for headless boot ? Ubuntu 22.04

As stated in the Title. I have tried several combinations and can't get it to work. There are no samples I could find on internet... everybody is happy with dhcp default settings... ??? I have tried ...
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dhcpv6 client not running at startup or at all

ubuntu server 20.04 is the client I have two dhcp servers one for v4 one for v6 running on an edgerouter When my ubuntu host boots up it gets a v4 address just fine but does not get a v6 address. ...
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Can't connect Barrier from Ubuntu 22.04 to Windows 10

I have installed Barrier(v. 2.4) for both Ubuntu and Windows. Keeping the Ubuntu PC as server and the Windows as client (or vice-versa), I've been unable to establish a connection. Server Logs (Ubuntu ...
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is there an alternative to change NetworkManager.conf

I would need to programmatically change NetworkManager.conf, which is not straightforward to me(if someone knows a straightfoward way, please let me know). Is there an alternative way to configure the ...
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DNS Errors after sudo apt update

today I used sudo apt update command and I started to get dns errors. Website takes forever to load, connecting to archive ubuntu takes a lot of time. This issue is really annoying because I often get ...
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Intermittent wifi problems getting worse - network unmanaged

Recently, the wifi on my laptop would not work when I first woke it from sleep. The wifi automatically tries to connect to the 2.4 GhZ network, and it would connect, but there would be no network ...
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"error: the plugin does not support import capability" when attempting to import openvpn file - VPN tunneling

so basically I have a .ovpn file and it works, but when I add VPN tunneling configuration it breaks. It worked until about two weeks before this date, and now it stopped working. Does anyone know how ...
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1 vote
1 answer
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Missing wifi connection GUI on 22.04 - Realtek 8822BE

My wifi connection is not working, LAN connection works normally. The Wifi GUI offers me Bluetooth settings, which I believe is a remainder of previously shared bluetooth internet connection (via my ...
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How can I create a bash script for Ubuntu that keeps retrying a service restart for VPN that loops until it gets a new IP?

I have batch file that runs this command for OpenVpn: echo [password]| sudo -S systemctl restart openvpn@client.service This work but it frequently returns the same IP address. After a few attempts, ...
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How to obtain wi-fi noise?

Is there any way to obtain the noise level (dBm) from wi-fi signals? I've looked up everywhere and came across this answer however my output doesn't include the noise. Thank you in advance.
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KVM guest network not working in bridge mode

I have a a KVM host running 20.04 and several KVM guests also running 20.04 which are setup to get their networking through bridge br0 of the host machine. After a reboot of the host machine, none of ...
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Ubuntu 22.04 no wifi after suspend

I'm having trouble after resuming my suspended Mini PC. The wifi is not working and it made the whole system unstable. The only way to fix it is by restarting the PC. I'm using Ubuntu 22.04 and my ...
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connected to wifi but no internet, network-manager restart temporarily resolves this problem

Since some time I am having this issue with my wifi connection. The wifi is connected and I am browsing the internet but the suddenly there is no internet access any more and the wifi symbol shows ...
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Wifi Ubunto 20.04 [duplicate]

I have Hp omen 17, I am using Ubunto with win 10 dual boot,I have an issue with my WIFI, it always disabled in Ubunto 20.04 and I have to start my win 10 first then restart and use ubunto to make it ...
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