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Questions tagged [18.04]

Seventh LTS (Long Term Support) release of Ubuntu, code-named "Bionic Beaver". Released on April 26, 2018. Will reach End of Standard Support (ESS) in April 2023. Only use this tag for version-specific questions.

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Failed to execute child

I made some sort of error trying to install software. Now my terminal is stuck with this error message How can I clear it to use it again? I can't type anything in terminal. I think I found which ...
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What locks the dpkg when installing packages on boot?

We have a system with a script that install a lot of deb files when the computer first boots up. We are having trouble because dpkg sometimes randomly blocks the install because something else is ...
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Timed out waiting for device problem

EDIT: When running the previous version of the kernel, I don’t get any of these symptoms. It is therefor most likely, that there was some kernel bug introduced. I had lately experienced some problems ...
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Laptop only boots to BIOS screen after I attempted to set an older kernel version as default

Let me preface this by saying I am new to this area of computer science. I will be saying BIOS a lot in this post, but I am not sure if I am using it correctly or if I actually mean UEFI. I have a ...
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How to select a different user to authenticate Livepatch with?

I am an IT Admin and recently set up an Ubuntu 18.04 laptop for one of my users. As apart of the process, I create a local admin account to set things up and join the computer to our Active Directory ...
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How to use a more recent clang-format or clang-tidy version on Ubuntu 18.04?

Meanwhile LLVM has released apt packages for LLVM 13 and 14 but out-of-the box clang-format-13, clang-tidy-13, ... are not available via apt-get install clang-format-13. How can I install clang-format-...
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Unable to SCP files to my Ubuntu machine

I am trying to SCP my files to my ubuntu machine. unfortunately, I am facing some issues as mentioned below. vvsa@vvsa:/Desktop$ scp PanGPI.log vvdn@172.21.240.71:~/Desktop vvdn@172.21.240.71's ...
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Upgrade from 18.04 to 20.04 crashed my laptop

I had been having many problems recently and tried to upgrade to 20.04, it took a long time to figure out how to clear some obstacles to even starting that process, but after I removed skype it seemed ...
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Getting error each time I run catkin_make

I am getting this error each time I run catkin_make. I have tried multiple things already, but none of them seems to work pdk4@pdk4:~/catkin_ws$ catkin_make Base path: /home/pdk4/catkin_ws Source ...
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uname -r shows version 3.13.0-57-generic which doesn't exist in /lib/modules/ after upgrading to 18.04

I had upgraded my Ubuntu 16.04 installation to 18.04 in 2020, but never checked the Linux kernel being used - it is still 3.13.0-57-generic! Now I need a newer Linux kernel because the iptables ...
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2 votes
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Ubuntu 18.04 (4.15.0-177) booting issue: AER: Corrected error received: id=00e0

I have a dual boot Ubuntu 18.04.5 LTS + Windows 10 that has been working fine for 4 years, until yesterday. Booting is now extremely slow (about 2 minutes compared with 15 seconds before) and when it ...
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Disable multitouch / pinch to zoom with touchscreen kiosk

I'm operating on a kiosk setup with a touchscreen PC that has multitouch capability. The PC is running Ubuntu 18.04 and a custom GUI software on top of Xorg. Currently it is possible to e.g. pinch-to-...
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I should set fsck manually every time my pc boot

I just messed up by Ubuntu permissions. I don't know which of commands I used is the problem:( after I see luck sign on all of the folder I have in my home restart my system and then just see grub ...
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Reboot error after kernel update on ubuntu18.04

In ubuntu18.04, after kernel update, reboot, click Ubuntu, and a few lines appear on the black screen and stop. How to fix it? I tried updating all kernel versions, but the results were the same.
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Ubuntu 18.04 running on bare metal with 14.04 containers

Is it possible to install Ubuntu 18.04 on Bare metal and run up a container on Ubuntu 14.04? I have some SW that has been compiled and delivered to run on a 14.04 container environment. I'm currently ...
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Ubuntu 18.04 suddenly no sound and no wifi

I've been using ubuntu 18.04 since I got this Dell laptop in 2018. I don't have any dual thing, just ubuntu. Yesterday suddenly sound is gone and only Dummy Output is shown in settings, but I still ...
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Kernel panic - not syncing : Attempted to kill init exitcode=0x0000009

firstly I'm newbie in linux, I facing this issue when try to restart or shutdown my laptop. It just stuck in CLI with Kernel panic - not syncing : Attempted to kill init exitcode=0x0000009. I'm trying ...
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How can i know the hard disk name?

How can I find the name of the hard disk I'm already in as I tried sudo fdisk -l but the result contains a lot of names, i just need the hard disk I'm using now , please EDIT I got sda 8:0 0 ...
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Gave up waiting for suspend/resume file then goes into initframs busy box

I upgraded the virtual box from 6.1.24 to 6.1.3. After that, I tried opening my 18.04 version of Ubuntu, and it fails to boot with message appearing ‘needs maintenance’ or press CTRL+D to continue. ...
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4 votes
1 answer
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build deb package that uninstall another package in case of remove or purge

i try to build an package, which can uninstall another package, if my package should be uninstall. I have tryed the "Depends" and the "Pre-Depends" policy in the control file. But ...
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How to install BIOVIA Discovery Studio on Lubuntu?

I have BIOVIA_2021.DS2021Client.bin (278.7MB) and as guided by https://www.researchgate.net/publication/...
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How to reset ls command functionality

This is kinda embarrassing, but I have an Ubuntu console on my windows' software that I used to use in 2019 and left behind when i installed Ubuntu itself. Today i tried using it and found that i ...
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Ubuntu 18.04 recording problem: cannot record any audio

I am using Ubuntu 18.04 and trying to record an audio. Though an audio file is being created, but it doesn't have any sound. I am using front panel port.
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Revert a make install due to installing PCL before VTK

I'm following the steps of a repository and to sample some dataset, PCL and VTK are needed. I had a lot of issues before regarding broken packages and had to delete and install again Ubuntu (18.04), ...
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How to install programs from snap older version

04 32 bit I have problem that I cannot install Sublime text , i tried diffrent ways but it dosent install ,i want to install Sublime text 3 . I tried : Installing it from snap But there is only 64 ...
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xhost: unable to open display ""

I'm trying to use the -S method to run a sudo command user@vmi804792:~$ echo ***** | sudo -S -v But I get this error: ***** [sudo] password for user: Error: Can't open display: unix:0 sudo: no ...
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Ubuntu 18.04 making some updates when put to sleep/suspend mode

I have a ubuntu 18.04 in my laptop: Dell Vostro 5568 , cpu : Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz gpu : Nvidia geforce 940mx gpu with 4gb memory. my problem is that whenever I put my laptop to ...
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1 answer
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Slow boot time in ubuntu 18.04

My computer takes 130 seconds to boot. I have a Dell Vostro 5568 , cpu : Intel(R) Core(TM) i5-7200U CPU @ 2.50GHz gpu : Nvidia geforce 940mx gpu with 4gb memory. Is it reasonable for me to expect ...
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Visual Stuttering across entire system

Recently I have had visual stuttering across my entire system (even if i am not running anything), similar to this recent unresolved post: Ubuntu 22.04 stuttering (see the recording) Unlike them, this ...
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How can I grant permission to snap application (evince) (ubuntu 18.4) to open files outside home?

I have installed evince through snap in ubuntu 18.04 and only opens files inside home folder. ** (evince:6214): WARNING **: 00:03:47.818: set_filenames: Error when getting information for file “/...
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Changes after new patches

Can anyone please let me know the changes, which is going to happen after these patches going to apply. distro-info buntu:18.04/bionic-updates, in bionic initramfs-tools-bin 0.130ubuntu3.13 in bionic ...
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resizing snapped windows together with ubuntu

I want to be able to snap two windows together, then when I click on the border of the two windows and drag left or right, resize them as a whole, that is, if I resize the window on the left 50% ...
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Issue with Linux multi user creation using bash script

As per our requirement we provided our devloper group: devs:r-x to /var/log/httpd directory. Now I'm creating a Linux function , which take the developer's first name and create a linux user in our ...
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Ubuntu 20.04.4 LTS not recognizing wifi adapter after upgrade [duplicate]

I recently upgraded from ubuntu 18 to ubuntu 20 on my Lenovo G500. Before the upgrade, I was able to use wifi easily with no setting up drivers. However, after upgrading to version 20, my laptop no ...
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How to keep boot drive as sda

How is it possible to make the boot drive always sda. Recently ubuntu 18.04.5 changed boot drive to sdb1. I have written shell scripts that assume boot drive is sda. Is there way to make the boot ...
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Wake On Lan UBUNTU 18.04 - DELL OptiPlex

How to enable Wake on Lan on Ubuntu 18.04 LTS? I tried what's in this question: How to enable Wake On Lan (WOL) in Ubuntu 16.04 But it did'nt work. Thanks in advance... Edit: Optiplex model is 5050
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Unable to connect to multiple bluetooth devices at the same time

Running Ubuntu 18.04 LTS, I have a bluetooth keyboard and headset. I can only connect one of them at a time to my laptop. Both can connect to my android phone at the same time (plus my mouse as well), ...
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Ubuntu 18.04 install for remote server

Does anyone know of an ISO image for Ubuntu 18.04 that will allow me to install it on a remote server? I'm trying to get a server up and running for my friend so he can use it for minecraft gaming but ...
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Ubuntu 18.04 - how to hold volume constant when multiple devices are on line-in

I am using a standard 3.5mm splitter to connect my home computer, work laptop, and headphones on one line, which lets me listen to music from my personal device while still receiving email cues and ...
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Why was networking set disabled?

I thought the network adapter was broken on my server (where I have also Xfce installed), but then I noticed that networking was just set disabled in Network Manager Applet in panel. However, I am ...
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Ubuntu 18.04 can't boot into GUI

I have a desktop with Ubuntu 18.04 installed which hadn't been used for a few months and when I powered it up it no longer logs in to the ubuntu desktop GUI. It brings me instead to a terminal that ...
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Upgrade from 18.04 to 20.04 fails. The package 'postgresql-10-postgis-2.4'

I'm trying to upgrade 18.04 to 20.04 but the upgrade halts with error: ERROR Dist-upgrade failed: 'The package 'postgresql-10-postgis-2.4' is marked for removal but it is in the removal blacklist. ...
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Ubuntu 18.04 LTS compatibility with Dell PowerEdge R650

Anyone know or have any experience running Ubuntu 18.04 LTS with newly release Dell PowerEdge R650? In dell compatibility and also in Ubuntu compatibility, only Ubutun 20.04 is reported as compatible.
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Bridge Wlan and eth0

My problem is the following, I am using a pretty complex network architecture for multi robotic operation. One robot is composed of different embedded computers and a switch, making a local network ...
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1 vote
1 answer
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Failed release upgrade - strange recovered situation

Let's be honest, I am an beginner regarding Ubuntu and I **** up so I reach out to this community to hopefully get more information how to solve the in my opinion impossible situation I created. I did ...
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There is some problem while Creating BLE Application in Ubuntu 18.04

I begin to make an application that helps to communicate between my smart watch and my Ubuntu 18.04 computer. But as I know, I need to use a USB Bluetooth dongle to be detected by my smart watch( ...
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How to update to the latest bionic beaver in chroot environment

I've inherited a load of source code from some contractors. This build works on Ubuntu 18.04.06. Trying to build on previous versions of Ubuntu do not work as package dependencies are missing and the ...
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Physical Mouse Buttons do not work on Lenovo Yoga X1, Ubuntu 18.04

Problem The buttons above the touchpad that are supposed to be left-, middle-, and right-click do not work at all currently. It used to work at some point in the past. Just a few minutes after asking ...
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How to install lua5.3 in Ubuntu 18.04?

I have started learning lua programming and have installed lua using below commands sudo apt install lua5.3 liblua5.3-dev but when I do $ lua I get this warning Command 'lua' not found, but can be ...
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Ubuntu is lagging

Can somebody help me to solve problem with ubuntu lagging on laptop. When I turn on my laptop everything is ok. But after 15-25 hours my laptop starts lagging. I have 2 GPU on laptop: integrated(intel ...
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