Questions tagged [ubuntu-20.04]

Ubuntu 20.04 (Also codenamed Focal Fossa) is a Long Term Support (LTS) release which would be supported until 2025 by Canonical, it's manufacturer company. Questions on Ubuntu 20.04 are on-topic here, but you can also check out Ask Ubuntu (askubuntu.com).

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I cannot connect to my server with WinSCP

when I connect to server by Winscp I get this error: Error skipping startup message. Your shell is probably incompatible with the application (BASH is recommended). my log file is: root@hostname:~# ...
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docker without sudo on WSL2

According to https://docs.docker.com/engine/security/rootless/ running dockerd-rootless-setuptool.sh install will let you run Docker without sudo, however, when I try to do it, I get this error: [...
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Ubuntu stucked on splash screen (Can't able to enter on user/password, desktop screen)

I am stuck on how to load completely the OS and the login/password screen, the PC stops on the Ubuntu black screen and stuck on it: This is the situation from my HDD in GParted, which seems that ...
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Laptop giving battery issues on dual boot in different disks

For the last year I've been having issues with my experience in both Windows 10/11 and both Ubuntu 20.04. Since the installation of an SSD for W10 and an M.2 for Ubuntu, energy has been the only point ...
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logrorate.d generating files that have endlessly appended dates and doesn’t see to compress files

I tried to configure my logrotate.d as below, it generates files with funny names (ex: 0220420-20220421-20220422-20220423-20220424-20220425-20220426 appended to it), I want to check is it working as ...
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Linux: lalt key triggers escape key

a while ago I noticed that all my ctrl + alt shortcuts stopped working. Using xev, I found out that the reason for this is probably that pressing lalt actually triggers lalt and escape: KeyPress event,...
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does firefox support a httpS blacklist?

i'm a webdev, in run test servers on localhost, sometimes randomly firefox will try to connect to httpS://127.0.0.1 instead of http://127.0.0.1 or httpS://localhost instead of http://localhost: it ...
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Launch issue on android cuttlefish environment(AOSP codebase)

My environment is "Ubuntu 20.04 + 11th Gen Intel(R) Core(TM) i5-1145G7 @ 2.60GHz". While triggering the 'launch_cvd' command on my repo, I didn't received "Virtual device Boot completed&...
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Virtual Box Cannot Autostart on Ubuntu ZFS

I have a Virtualbox server running on Ubuntu-20.04. All of the guest VMs exist on a ZFS raid partition. The VirtualBox admin user is on another ZFS partition. I have a problem that none of the VMs ...
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How to netboot a Raspberry Pi with TFTP and NFS on a Synology NAS?

I can netboot Ubuntu 20.04 on a Raspberry Pi 4b over NFS, using a Synology DS 1618+ as a TFTP and NFS server. But I would like to protect the root file system with overlayroot so several machines can ...
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How do I stop bluetooth turning on after airplane mode is turned off? (Ubuntu 20.04 LTS)

First it was bluetooth turning on automatically on bootup. I solved that by going to /etc/bluetooth/main.conf and changing autoenable to false. Now, I realize that turning airplane mode off ...
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1 vote
1 answer
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WSL Ubuntu: after running a dotnet application which outputs to my console, the bash terminal output is messed up

There's no longer any line breaks and I can't see the results of me entering text. The application being run is my own and does nothing with the console except a couple of Console.WriteLine and ...
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Oracle Cloud console connection what is the username and password to be used here?

I've been trying out Oracle's Cloud Service after my AWS trial expired, and I've setup a VM.Standard.E2.1.Micro instance with Ubuntu 20.04. I was trying to change the default SSH port from 22 to 4545, ...
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Ubuntu 20.04 - Realtek RTL8723BE - No Networks shown in Wifi Select A Network

The onboard Ethernet does not detect a network cable plugged in. The onboard Wireless 'functions' but does not list wireless networks. Opening 'Select a network' shows 'No Networks'. Wireless is ...
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Ubuntu Linux 20.04 dnsmasq can not be started, tried much but same error 127.0.0.1

I want to ask how to do the usable dnsmasq local cached DNS server setup without interference with the Ubuntu 20.04 LTS system components etc. Would like dnsmasq to take over many services fro my ...
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2 answers
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"Command not found: complete" message appears every time I open the terminal

I was setting up my development environment on Ubuntu 20.04 following a video on Youtube and after running the command $ echo -e '\n. $HOME/.asdf/completions/asdf.bash' >> ~/.zshrc Every time I ...
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1 vote
1 answer
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Cant ping over direct fiber connection using static ip addresses win10 to ubuntu 20.04

So far have not been able to get my pc direct connected to my server and I am hoping someone can see where I have gone wrong or what I have missed. I have searched through many posts and spent some ...
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Did I accidentally lock myself out of my PC forever?

I use Ubuntu 20.04 LTS for an exercise. I had to edit /etc/pam.d/common-auth to set a max 3 attempted logins for users. However instead of putting the commands in the start like I was supposed to, I ...
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initrd /casper/initrd: verbose output

In my previous question: grub2: error: can't allocate initrd - chainload an NTFS partition from FAT32 without errors on initial ramdisk (initrd) file I posted the error output: error: can't ...
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1 vote
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grub2: error: can't allocate initrd - chainload an NTFS partition from FAT32 without errors on initial ramdisk (initrd) file

The OS with Ubuntu 20.04.3 LTS Desktop 64-bit is located in the gpt2 partition with the filesystem NTFS. This is the structure of the gpt1 partition with the filesystem FAT32: . ├── boot │   └── grub │...
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1 answer
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grub2 terminal: redirect command output to file

I refer to the syntax used by grub2, for example when you start a pendrive and you are presented with the grub2 terminal. I would like to redirect the output of the lsmod command to a file in some ...
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virtualbox inside docker: usernames and permissions

On a Ubuntu 20.04 machine (a) I have made a virtualbox VM running Windows inside a docker, using this recipe. When I was happy that everything worked, I used docker save to store the whole docker+...
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Change bash to replace string in all future commands or edit mssql server to accept network drives

I'm currently trying to get MSSQL on Ubuntu 20.04 to work with omega software (https://www.kros.sk/omega/). It's industry standard for accounting in my country but it can't be found outside of it. And ...
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Internet stopped working Windows 10 guest (VirtualBox) on Ubuntu 20.04 host

I updated my Windows 10 guest on my Ubuntu 20.04 host and suddenly lost internet connection on my Windows 10 virtual machine. Internet access is working fine on my host. What I have tried: ...
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1 answer
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bitcoin-cli testnet : Could not connect to the server 127.0.0.1:8332

I've installed bitcoin-cli from here I run the bitcoin core on Ubuntu 20.04 (AWS EC2). mac-os also experiences similar problems. Ubuntu 20.04 screen capture for the error messages The commands I've ...
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can't build gcc-core-4.1.2 on Ubuntu 20.04.4 LTS

i can't compile gcc-core-4.1.2 on Ubuntu 20.04.4 LTS. 'make bootstrap' fails with $ make bootstrap make[1]: Entering directory '/home/user/Development/gcc-build-root/gcc-core-4.1.2.build/build-x86_64-...
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2 votes
1 answer
139 views

Add exit confirmation dialog in brave browser

Often I Accidently close brave browser and even though I have selected continue were you left off On Startup still I am struggling to find how to enable exit confirmation setting . Is there is a way ...
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-1 votes
2 answers
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Windows 10, running as VirtualBox guest, does not see USB flash drive

I'm running Windows 10 as a VM under VirtualBox in Ubuntu 20.04. I've put a USB flash drive in a USB socket and Ubuntu sees it Ok. Windows 10 VM doesn't see the drive, even though I've enabled USB '...
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VirtualBox createvm in Dockerfile fails

I'm trying to create a Dockerfile that has a VirtualBox VM inside: it's based on ubuntu20.04 and I first install and setup the packages: FROM ubuntu:20.04 ... RUN echo 'debconf debconf/frontend select ...
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-1 votes
3 answers
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Is it possible to convert an ISO file into a DEB file?

I got curious about installing any version of Windows on my system which runs Ubuntu 20.04 (64bit). It was relatively easier installing Android x86 but I hit a snag when I tried using the same ...
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1 answer
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Copy email when left clicking it

In chrome is it possible to copy an email address when left clicking it? (Something like setting chrome://settings/handlers but to a program that just copies the link to the clipboard.) Chrome on ...
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Need to configure my xorg.conf file

I have installed Ubuntu 20.04 on my pc but ubuntu is not able to configure my display/graphics drivers automatically and that is causing white horizontal lines, that move all over screen. I have intel ...
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1 vote
0 answers
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How to find correct IP address of WSL/Linux to be used in WinSCP?

I am trying to transfer files from Windows to Linux through WinSCP. The problem is I cannot find the correct IP address of the Linux ssh server to be used in the WinSCP. I am using Ubuntu-20.04 Linux ...
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1 answer
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How to install bc2cnf in ubuntu?

I would like to use the bc2cnf tool to generate CNF for a digital circuit. Please let me know how to install and run the bc2cnf tool (from the BC package) in ubuntu using the terminal. Thanks in ...
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1 vote
1 answer
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Ubuntu 20.04 hangs after sent to Suspend mode

I am running Ubuntu 20.04.4 LTS on Lenovo Thinkpad P1 (and using Grub to dual boot between Windows and Linux on two physically separate SSD drives). Recently I let the system install some updates. ...
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how to set permissions in SAMBA Ubuntu 20.04

I have a SAMBA server on ubuntu 20.04. I have a folder with sbfolders with different permissions for different users, then I create a folder that can be accessed by all users with 777 permissions. ...
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1 vote
1 answer
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Ubuntu 20.04: sudo apt-get update command error

I ran the sudo apt-get update command and I keep getting this output: Hit:1 http://za.archive.ubuntu.com/ubuntu focal InRelease Ign:2 http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu focal InRelease ...
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1 vote
0 answers
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Ubuntu with headless server + access with VNC at startup is not possible

ubuntu desktop 20.04 LTS installed. system is up and running, access over VNC is possible as long as i did a login at the desktop upfront. vnc service by vino. i want to use the system headless: ...
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1 answer
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Troubleshooting WSL1 Ubuntu - 20.04 - Fails to start with error 4294967295

I'm using WSL1 on Windows 11 Pro (Version 21H2 - Experience: Windows Feature Experience Pack 1000.22000.527.0). It's been working fine for months, but then recently I have been unable to get it to ...
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0 votes
1 answer
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Why can’t I run a specific .x86 file on Ubuntu 20.04 LTS?

I am trying to play Baldi’s Basics. OS is Ubuntu 20.04 LTS on a Lenovo B590 laptop. But when I try to, I get a error saying no program is chosen as the program to open it. I try to use the terminal ...
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Tensorflow GPU not working on Ubuntu 20.04 (error message)

So, I tried to go through several tutorials (the latest being this one) to set up GPU support for TensorFlow on Ubuntu 20.04 and I always get the following message: joris@joris-N751JK:~$ python3.9 ...
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How to enable sidebar on both monitors on a dual monitor extended display?

I am extending my display on my Ubuntu but the sidebar appears only on my primary display. Is there a way to enable the side bar/side panel/dock panel on both the monitors?
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TensorFlow GPU on Ubuntu 20.04

The Tensorflow documentation details how to install Tensorflow with GPU support for Ubuntu 16.04 and 18.04. I can't find anything up to date for Ubuntu 20.04 however. How do you install Tensorflow ...
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174 views

Grub2: stdin: invalid argument

I have attempted to create a UEFI pen drive that installs Ubuntu 20.04 LTS Desktop 64-bit. The exFAT partition gpt2 contains the entire Ubuntu 20.04 LTS system image. The FAT32 partition gpt1 contains ...
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1 answer
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Laptop won't start when Ubuntu SSD is unplugged - move grub

I have a MSI laptop running on Windows 10, for work purposes, I have installed Ubuntu 20.04 on a SSD which works fine When I turn on my laptop with the SSD plugged in, a menu appears where I can ...
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4 votes
1 answer
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How to correctly set the subnet mask installing Linux Ubuntu 20.04 server? ERROR: '172.16.182.216' is not contained in '255.255.255.0/24'

I am not a system engineer or a network expert (I am more a software developer) I am trying to install an Ubuntu Server using static IP address. I am using the information provided by a collegue. ...
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Launch `graphics_array` in Sage, installed in WSL Ubuntu

I am trying to run the following, from the Sage Tutorials. I am having Sage installed in Ubuntu 20.04, running in WSL. When I run the command graphics_array(w, 4, 5).show(axes=False) I am getting ...
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7 votes
3 answers
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What is the difference from exfat-fuse and exfat-nofuse?

Until now I have never dwelled on the word fuse but then I saw that there is nofuse. Based on searches I have done in the the internet they don't clearly explain the difference. What is the difference ...
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printing with smbclient on ubuntu to a ricoh printer results in botched print jobs

I'm trying to use smbclient to print PDFs on Ubuntu 20.04 and it's not working. Here's the command I'm using: smbclient -U DOMAIN/user%pass //host/MACHINE -c "print test.pdf" The PDF I'm ...
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Mounting shared folder in VirtualBox 6.1 for Ubuntu 20.04 (Windows host) not working

I followed https://www.pragmaticlinux.com/2021/02/how-to-mount-a-shared-folder-in-virtualbox/(among other related threads) in order to mount a shared folder in my Ubuntu 20.04 VM. Auto-mounting I ...
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