Questions tagged [connection]

Questions concerning network connections.

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Problem with the ethernet connection

I'm having this problem with my ethernet internet connection. My PC connects without problem, I can browse and watch videos on YouTube, the problem occurs when I download something greater than 50 MB, ...
Alan Gabriel Amaro Colín's user avatar
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142 views

Problem with wireless mouse and internet(crashes) Internet stops working with usb plugged. some times

I'm using budgie, ubuntu 20.04. The mouse works perfectly in a few days. On other days, it is constantly causing problems. The internet crashes, I can't access any pages. When I remove the usb plug ...
Luiz Brz Developer's user avatar
2 votes
1 answer
748 views

I changed permissions in my /home dir to 750 and files in it now I'm not able to connect the server [duplicate]

I changed the /home dir to 750 and files in it. Now I'm not able to connect the server with SSH public key. It’s showing the error Permission denied (publickey).
raviteja's user avatar
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1 answer
2k views

Authentication fails AD

Good day to all. Raised Ubuntu 20.04, entered it into the domain. However, it turned out that the user, after a reboot, cannot log in to the system under a domain account. BUT, if you cut off from the ...
Tsunani's user avatar
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0 answers
232 views

How to connect to my phones's hotspot automatically as soon as it is detected by my desktop?

I have two devices through which i access the internet on my Ubuntu 21.10 desktop:a portable broadband device (always active/on) and my android phone's hotspot (active occasionally to save battery). ...
skekmal's user avatar
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2k views

Cannot connect to server after release upgrade

I was in the process of upgrading an old 16.04 LTS, and seemingly locked myself out with no way back in. Help. I followed the basic steps: sudo apt-get update sudo apt-get upgrade -y sudo apt-get dist-...
Katai's user avatar
  • 677
2 votes
1 answer
299 views

Ubuntu 18.04. Sudden DSL connection degrading - on and off - inconsistent slow connection to websites

I have been using my rig with no problems for 2 years. Nothing change in the last days in terms of ISP etc... Suddenly I am experiencing troubles with my internet connection. Often I go to my favorite ...
Imparo Ubuntu's user avatar
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0 answers
532 views

Failure in pairing bluetooth device in Ubuntu 21.04

I see that failure in pairing Bluetooth devices is commonplace. I have Ubuntu 21.04, I plugged a Bluetooth 4.0 Adapter Dongle, the device (headphones) is visible but no pairing is obtained. I checked ...
Gigiux's user avatar
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459 views

I installed firewall-configuration and lost the wifi

to keep the PC safe, I installed firewall-configuration from Ubuntu software: As soon as the installation was over, I lost the WiFi connection (and even Rstudio cannot connect with R, by the way). I ...
Gigiux's user avatar
  • 777
1 vote
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411 views

How to see and manage the connected devices on your Ubuntu hotspot?

I would like to check how many devices including mine are connected to the active hotspot, and perhaps manage the devices by kicking out unwanted devices that might be connected to my hotspot. I was ...
Vin Raghav's user avatar
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2k views

Ubuntu 20.04.2 Temporary Failure in name resolution

About 2 weeks ago my VM became unreachable from the Internet - I can't access it via ssh, I can't access the files stored on it but I can ping it. I have KVM VNC Setup for it so I logged on and I ...
Legit4K's user avatar
1 vote
1 answer
915 views

Wired network connection keeps disconnecting

Recently, I've been trying to install and setup a Synology NAS server (DS920+) on our Ubuntu server (18.04) at work, and I am facing some connection issues with the wired connection (ethernet ...
rozTsoni's user avatar
-1 votes
1 answer
8k views

How to use two Ethernet connections at the same time (on single pc) on Ubuntu 21.04? [duplicate]

I don't know how to use two Ethernet connection simultaneously on single PC. I was searching about this problem at least 4 hours, but I have no clue how to do it. I am using Ubuntu 21.04 on this PC, ...
カラス's user avatar
0 votes
1 answer
808 views

Bridge network suddenly stopped working (18.04)

My Desktop is getting weird. I have Ubuntu 18.04 with a bridge set up (for my gaming VM) and until yesterday all worked fine. Booted up today, no network connectivity. I have no idea where the issue ...
Fabian's user avatar
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423 views

No Bluetooth Hardware on Ubuntu 20.04

I've HP Laptop, setup on Dual Boot with Windows 10. Bluetooth works normally on Windows 10 but it doesn't seem to work on ubuntu. I read 100's of threads with no luck, finally posting a question here. ...
TransmissionZ's user avatar
1 vote
1 answer
2k views

How to make KDE connect launch at startup?

I was wondering if there is a way to make KDE connect Launch as soon as the system boots/reboots. I always have to open the KDE connect app to make sure an instance of it is running in the background, ...
Prajwal Sagar's user avatar
1 vote
0 answers
31 views

LAMP server time out

I have a LAMP server (no M since I don't have a need for a database) where I am posting pictures to the server using PHP. Everything is working fine and then all of a sudden my devices can no longer ...
Kayaking_t's user avatar
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222 views

sqoop won't connect to mysql

I am trying to connect Sqoop with Mysql. Before I asked this question I have tried all of the solutions I searched for, but nothing worked for me. This is what I'm typing /usr/local/hadoop/sqoop/lib$ ...
Amel ha's user avatar
5 votes
1 answer
4k views

How to make unlimited mobile hotspot trick work on linux?

I recently dual booted into ubuntu because my Windows os is very slow to multitask. Surprisingly, when I tested most of my workspace in ubuntu, it can handle them very well than windows did (basically ...
Masterninja07's user avatar
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1 answer
448 views

Extreme slow internet connection on Ubuntu Server

My ubuntu server is connected with ethernet cable to the same router as my pc but doesn't nearly get the same speed. I have around 40mbit/s on my pc but my ubuntu server only gets 0.3mbit/s. They have ...
Nico1300's user avatar
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47 views

Putty Connect Issues

I am trying to ssh into a virtual machine using putty. The VM has my public key and I am able to connect to the VM when I am using one internet connection but when I go to another location the ...
New Ubuntu User's user avatar
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1 answer
201 views

ipv4 websites hardly reachable with a particular wi-fi network on a particular device wereas ipv6 ones work fine

Can hardly reach most high profile websites (e.g. https://stackoverflow.com, https://github.com) under a particular Wi-Fi network with the particular laptop regardless of the browser used. However, ...
ayorgo's user avatar
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1 vote
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307 views

Log process for outgoing connections

Is there an easy way to set up logging of all outgoing connections to certain ports, for example? Trying to figure out which programs/processes causes certain outbound connections. Server is already ...
Dennis Thrysøe's user avatar
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1 answer
48 views

Wired connection works for a while after fresh install then stops

Have an unused laptop that I want to run Ubuntu on (and leave in a corner to run various scripts). I installed Ubuntu Desktop and a wired connection worked for a while then just stopped working (wifi ...
figs's user avatar
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2 votes
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337 views

Cannot connect bluetooth W-Touch touchpad to ubuntu

I just bought a nice touchpad, working on Windows 10 but I'm not able to run it on Ubuntu 20.04 and I'm pretty sure there is a way to do it. Product link : https://www.brydge.eu/products/w-touch My ...
nhey4Aterno's user avatar
5 votes
2 answers
1k views

Why does the Ubuntu Software application think I am offline when I am online for all other applications and services?

I can update my system using apt and the Software Updater application on my Ubuntu 21.04 laptop. But I can not longer use the Ubuntu Software application. It keeps telling me "Go online to check ...
Christian's user avatar
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2 answers
598 views

connect two computers to send and receive data in real time

I have an old robot that only works with Ubuntu 14.04 and Python 2. The robot arm is controlled using ROS1. I wish to program the robot using python 3. I cannot upgrade the robot or its operating ...
NT ME's user avatar
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0 answers
68 views

Realtek Ethernet unclaimed network

recently installed ubuntu 20.04 and tried connecting through ethernet but not working. Ran lshw -C network and found this out:
Suleman Basit's user avatar
0 votes
1 answer
333 views

Send messages to devices on a LAN

We are setting up a small computer gang and want to have a LAN with a chat channel, but without the need to connect to the WAN and use external services like whatsapp or signal etc. Is there any way/...
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Connection failed - Activation of network connection failed

I have a Dell Inspiron laptop running Ubuntu 20.04.2 LTS. The system has always connected to my home WiFi automatically on start without any problems. Since two days ago every time I start the system ...
Calcifer's user avatar
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366 views

ethtool speed - Problems

Today I got my 500 Mbits line, at the beginning ethtool was set to 100Mbits so I didn't get the full speed. After I had unplugged and plugged in again, 1000 Mbits was displayed. Just now the Internet ...
Omexlu's user avatar
  • 111
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0 answers
150 views

How can I hide my laptop from my TV? (Samsung Smart TV)

On our computer, which is used by whole family, we have AllShare app installed for watching films from computer on TV. Smehow, my laptop appeared in the same place as our computer on the TV with name ...
frowyy's user avatar
  • 13
0 votes
1 answer
597 views

Ubuntu limiting my shared connection to 10mb/s

I am using a laptop to share internet to my pc, via lan cable. I have a 50mb/s line however the connection that I am getting on the pc is 10mb/s. the laptop itself is recording between 45-50mbps on ...
Errol Caughey's user avatar
0 votes
1 answer
1k views

Ubuntu server ports refuse connection occasionally

Background I have Ubuntu 18.04.5 LTS (server) running multiple services, including the usual ssh, samba and then quite a few other things, including home automation, Nextcloud, etc. It serves up my ...
Fanus G.'s user avatar
1 vote
0 answers
346 views

Intermittent connection refused issues when accessing server running Ubuntu 18.04.5

I have a VPS set up at a hosting provider running Ubuntu 18.04.5 and recently experience intermittent connection refused issues. The connections can be going through alright for a while and during ...
Claudijo's user avatar
  • 131
0 votes
1 answer
147 views

How can I Set wait_timeout for a Spesific Database on MySQL?

I am setting a global wait_timeout value on my.cnf file but I want to set different wait_timeout values to different databases and it must not be in software side, I need to make it on MySQL service ...
TarabydaVllasıCafcaflıAtArabsı's user avatar
0 votes
0 answers
204 views

XDS gui installation - no route to host

I'm trying to install XDS on Linux Subsystem for Windows following guide in this document. So far I've successfully install xds package (step #3). I want to install XDS-Viewer etc as well (step #4) ...
miyakee's user avatar
1 vote
1 answer
228 views

server ubuntu xrdp connection problem

I tried to connect into my server ubuntu from a remote ubuntu pc using remmina but i suddenly encountered this connection problem. I tried using another person's server profile and it works perfectly, ...
eja's user avatar
  • 11
0 votes
1 answer
63 views

Internet not working even though connected

I have been running Ubuntu on my Dell laptop for almost half a year. Wifi has had some connectivity issues in the past but now all of a sudden I cannot access the internet at all. I have tried both ...
viperperidot's user avatar
0 votes
0 answers
213 views

Activation of network connection failed HP Probook 650 G1

I have a HP ProBook 650 G1 with a bootable USB stick with Ubuntu 20.04.2. Wi-Fi works, but the ethernet connection gives periodically: Activation of network connection failed. The ethernet port is ...
Hugo's user avatar
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1 vote
1 answer
222 views

Why do the following netstat, ps, and auth.log have such output?

I seem to be getting a lot of different connections (ssh) on this Ubuntu server I am sshed into. Are these just brute force attempts? When running netstat -tnpa | grep 'ESTABLISHED.*sshd' why do I get ...
Yohan's user avatar
  • 13
1 vote
0 answers
54 views

When VPN is connected it disconnects other clients connections to the server

Connecting to EnterpriseVPN Gateway from Ubuntu 20.04 I'm on Ubuntu 20.04. I followed the tutorial here to install and connect to a VPN, which worked brilliantly. I'm using PuTTy and WinScp to connect....
ken4ward's user avatar
  • 111
2 votes
0 answers
47 views

Internet connection via WIFI stops/slows down significantly after turning on bluetooth

After turning on Bluetooth and connecting headphones, laptop stays connected to WIFI but internet connection goes down. Here's output for lspci -nnk | grep -iA2 net: Subsystem: Lenovo QCA9377 802....
bohdan's user avatar
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2 votes
1 answer
528 views

Setup new connection in mysql workbench using standard TCP IP over SSH

Could not read the contents of .ssh directory Error opening directory '/home/[username]/.ssh': Permission denied I can see in the list of running processes that mysql-workbench is not running as root ...
Ghulam Akbar's user avatar
0 votes
0 answers
377 views

Bluetooth suddenly turn off and won't turn on on Ubuntu 20.04.1 LTS

I'm using Ubuntu since a week now, the only issue I have is the Bluetooth suddenly stop working and turning on is disabled in settings saying "No Bluetooth found - Plug in a dongle to use ...
FeDos's user avatar
  • 156
1 vote
0 answers
1k views

ssh connection refused headless install

I am trying to do a headless install of ubuntu 20.04 on my raspberry pi 4, however when I try to connect to the Pi via SSH I get the error message "Connection refused". I have tried copying ...
grammamoocow's user avatar
1 vote
0 answers
120 views

WiFi connection keeps dropping after short time

WiFi card worked fine for nearly a year until recently. Now it keeps dropping and reconnecting. I have tried shutting off power management but did not resolve issue. Card is Realtec PCI card. I'm ...
PaulM's user avatar
  • 11
0 votes
0 answers
3k views

How to keep SFTP connection alive?

I frequently connect to an Ubuntu VPS using SFTP from an Ubuntu desktop using the command line. The server disconnects me after a ridiculously short period of inactivity… something like 180 second or ...
Lexible's user avatar
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34 views

WiFi connection issue

I am not able to connect Kubuntu to WiFi . I can only connect with wired connection .Please tell me how can I connect it to WiFi.I am also not able to find any video on YouTube.
Atul Kumar Singh's user avatar
0 votes
0 answers
350 views

SSH Ubuntu server not replying to mac client

I'm trying to connect to my Ubuntu server from my macbook client through ssh. Port 22 is open and the server is not behind a router. I've run sudo tcpdump -i any port 22 -n -Q inout The request is ...
Augusto Pereira's user avatar

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