What is Ubuntu: Definition and 82 Discussions

Ubuntu ( (listen) uu-BUUN-too) is a Linux distribution based on Debian and composed mostly of free and open-source software. Ubuntu is officially released in three editions: Desktop, Server, and Core for Internet of things devices and robots. All the editions can run on the computer alone, or in a virtual machine. Ubuntu is a popular operating system for cloud computing, with support for OpenStack. Ubuntu's default desktop has been GNOME, since version 17.10.Ubuntu is released every six months, with long-term support (LTS) releases every two years. As of 22 April 2021, the most recent long-term support release is 20.04 ("Focal Fossa"), which is supported until 2025 under public support and until 2030 as a paid option. The latest standard release is 21.04 ("Hirsute Hippo"), which is supported for nine months.
Ubuntu is developed by Canonical, and a community of other developers, under a meritocratic governance model. Canonical provides security updates and support for each Ubuntu release, starting from the release date and until the release reaches its designated end-of-life (EOL) date. Canonical generates revenue through the sale of premium services related to Ubuntu.Ubuntu is named after the Nguni philosophy of ubuntu, which Canonical indicates means "humanity to others" with a connotation of "I am what I am because of who we all are".

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  1. jack action

    Fixing Linux kernel not found

    I have this remote server where I loaded the ISP-provided OS, namely Ubuntu 22.04. The lsb_release -d shows "Ubuntu 22.04.4 LTS" and uname -r shows "5.2.0". My problem arose when there seemed to be missing modules for kernel 5.2.0 in /lib/modules/5.2.0 for my needs. There is also no...
  2. M

    Ubuntu (or another distro) on a crowded SSD

    I'm a Master student in Physics and my professor for the thesis suggested to use an OS different than Windows, so I want to install a Linux distro in dual boot since I don't want to completely leave Win10 at the moment. I shall point out that I will be working in condensed matter physics (DMRG)...
  3. emilmammadzada

    FRENDY nuclear code -- Where to download it? (for ubuntu 22.04)

    I want to compare njoy2016 and frendy codes.If anyone is using frendy nuclear, I wanted to get information about how to download it for ubuntu 22.04 version?
  4. emilmammadzada

    Running the tests njoy16 in ubuntu terminal

    With which commands can I build and run the tests files in njoy16 on ubuntu?
  5. Wrichik Basu

    Upgrading to Ubuntu 22.04 from 20.04: Will all my applications work?

    Ubuntu 22.04.1 has been released recently, and the Software Centre shows that my system is ready to upgrade. I want to upgrade, but I am a bit afraid because there is no option to rollback the upgrade. I have a number of applications that are essential and I need them to work properly: MATLAB...
  6. Wrichik Basu

    Activation of Network Connection failed on Ubuntu 20.04

    I am facing this issue since some months on my laptop running Ubuntu 20.04. The WiFi disconnects suddenly and cannot reconnect, and an error message is shown in the Notification saying "Activation of Network Connection failed." This is not a problem with the router because just a few days back...
  7. Wrichik Basu

    Program Ubuntu to ignore mouse clicks that are very close in time

    At the very beginning, I accept that I have a faulty mouse. I bought it last year, and it's been only one year (almost), and the left button is malfunctioning. Single clicks are often becoming double clicks, which is causing a host of problems — closing two tabs one after the other in browsers...
  8. Wrichik Basu

    Restarting GNOME shell when it has frozen, without killing applications

    Ubuntu has given me a far more stable working system compared to Windows and its buggy updates. But, once in a while, I do find GNOME becoming slow or even crashing. If I find that the GUI is becoming unresponsive, I promptly restart GNOME using Alt + F2 → r → Enter This does the job most of the...
  9. dRic2

    Always launch a program with additional parameters Ubuntu 20.04

    Hi, Due to a proxy issue I have to launch chromium with this additional requirement to set the right proxy chromium-browser --proxy-server=http://proxy.myproxy:XXXX To get things more easy I defined an alias alias chrome='chromium-browser --proxy-server=http://proxy.myproxy:XXXX' so now I...
  10. Arman777

    Which one is better -- WSL2 or USB booted Ubuntu?

    I have started to use WSL2 for a couple of weeks, and I quite enjoy it. I code as a hobby and sometimes for my work-related issues (physics-related stuff), but I am not a software developer or engineer. Currently, I am using Windows10. However, I am thinking of using Ubuntu from now on and...
  11. Arman777

    The status of the previously created ubuntu folders in windows linux s

    A couple of months ago, I had created a WSL1 and used the Ubuntu app under the username void Later on, I have decided to upgrade it to WSL2, but I have encountered an error while upgrading it. Later on, I have discovered that it was due to BIOS virtualization settings. In any case, I have...
  12. M

    Booting Ubuntu on a Mac from external SSD

    Hi PF! I am trying to boot Ubuntu 14 from an external SSD on a new macbook pro. I formatted a thumbdrive following these instructions. I then attempted to boot the SSD following these instructions. In part 2, step 5 of the latter link, after selecting EFI Boot, I am prompted with "A software...
  13. M

    Can Ubuntu Run Efficiently on an External SSD?

    Hi PF! Can I boot Ubuntu from a portable SSD on a computer, say a laptop? If I run ubuntu from a portable SSD plugged into a usb drive, will it run slow? We have this old computer in my lab, but it's Windows and runs Ubuntu from a VM, so super slow and awful memory. Or should I just buy another...
  14. Wrichik Basu

    Bluetooth malfunctioning in Ubuntu 20.04 laptop

    My laptop is running Ubuntu 20.04, always up-to-date. This problem has started very recently. Suppose I connect my Bluetooth earphone to the PC, and start watching some lectures on YouTube. (Internet is provided by USB tethering from Android phone.) Suddenly, the audio on the earphone stops. On...
  15. M

    Should I delete all PPAs to fix failed updates on Ubuntu 18.04?

    Hi PF On Ubuntu 18.04 when I try and run software updates I get the error "Failed to download repository information". When I run apt-get in terminal I get E: The repository 'http://ppa.launchpad.net/blahota/texstudio/ubuntu bionic Release' does not have a Release file. N: Updating from such...
  16. Wrichik Basu

    Can I safely delete /run/timeshift/backup in Ubuntu 20.04?

    I learned about timeshift in the Linux Mint blog, and then read from It's FOSS that the utility not only backs up data, but can restore the OS with all its settings and customizations. I installed timeshift following the instructions from the latter website. Upon starting it, it asked me for the...
  17. Wrichik Basu

    Help Ubuntu 20.04: File got corrupted when moving to external HDD

    I wanted to move one file from my laptop to an external HDD. Using the file manager, I started the move operation; and after it completed successfully, I unmounted the HDD. When I plugged the HDD to our Windows 7 desktop, I found that the file was corrupt! The 8 GB .mp4 file had reduced to 372...
  18. Wrichik Basu

    Ubuntu 20.04: apt upgrade installs DKMS, autoremove removes it

    I wouldn't call this a problem, but every time I upgrade packages via sudo apt upgrade, DKMS is installed. After that, as soon as I execute sudo apt autoremove, DKMS is uninstalled. This has started after I changed the drivers for NVIDIA GeForce MX130 from the open-source X.Org driver to...
  19. Wrichik Basu

    Trouble installing MySQL on Ubuntu 20.04 — asks for root password

    I wanted to install MySQL on my laptop running Ubuntu 20.04, and was following this website for instructions. I executed the following commands: ~$ sudo apt update ~$ sudo apt install mysql-server ~$ sudo mysql_secure_installation After installation, I found that I could log into root user...
  20. Wrichik Basu

    How should I distribute space among different partitions in Ubuntu?

    I have had enough with my Windows PC. I have decided to create a dual boot PC with Ubuntu 20.04 LTS. I am doing a dual-boot system because I need Windows for: Amazon prime video app MS office Here is a view of the partitions of the HDD: I have a lot of programs to install: MATLAB Android...
  21. jack action

    Running Electrum in Python from the CLI on Ubuntu 20

    I'm trying to run electrum (written in python) from the command line on Ubuntu 20. I have 2 similar computers. The first one has version 4.0.4 and once in the electrum folder, I type electrum (the name of the executable file) and it executes whatever command I ask for. My problem is with my...
  22. M

    Troubleshooting Ubuntu 18.04 Screen Issues: Pink Discoloration and GPU Usage

    Hi PF! Can you see the upper-left pink on my monitor? It comes and goes, though I don't think I've ever seen it on Windows, only Ubuntu (to be fair Ubuntu runs about 99% of the time). Do you know what it's from, or anything about it? Thanks for your time! Josh
  23. M

    Editing formats on texstudio on Ubuntu

    Hi PF! I am trying to change the theme for texstudio on Ubuntu 18.04. Here they suggest editing the formats in the TeXstudio settings file (.txsprofile). However, here they suggest editing the texstudio.ini. file. I can't find either. I downloaded texStudio via the commands: sudo...
  24. M

    Troubleshooting Ubuntu: How Do I Connect to WiFi on My Computer?

    Hi PF! Today my computer randomly didn't connect to wifi. So I restarted the machine, then still unable to connect, I asked my wifi to forget the network. Now when I try connecting to it, it asks for a username and password. At the bottom there is a "connect" button I could toggle, but it is...
  25. M

    Upgrade to Ubuntu 14.04.5 from 18 with Step-by-Step Guide | PF

    Hi PF! I'm trying to switch to Ubuntu 14.04.5. Currently I am running Ubuntu 18. How do you recommend I do this; do I have to uninstall Ubuntu, reinstall Windows, and then go to 14?
  26. M

    How do I install Ubuntu on a PC with Windows 10?

    Hi PF! I'm trying to run Ubuntu on a Dell with Windows 10. I followed the instructions on the Ubuntu website, but I'm not getting the screen suggested here: https://tutorials.ubuntu.com/tutorial/tutorial-install-ubuntu-desktop#2 What I've done: downloaded Ubuntu from here...
  27. M

    MATLAB Switched from win10 and MATLAB to ubuntu and python"q"

    Hi, I felt like I have to learn more than one coding language, and wanted to strengthen my coding skills in general. I am good with Relap5 but I want to learn OpenFoam. is what I did logical and going to be worth the pain ? also I only have the Relap5 version of a windows ,is it possible to run...
  28. E

    Upgrading Ubuntu on Dual Boot: Safety & How-To

    A while ago I installed Ubuntu 17.10, and now LTS 18.04.1 is out, I want to upgrade to it. I tried to upgrade from Ubuntu 17.10 by typing update-manager -c as the command after I pressed ALT+F2, and while it said that there is LTS 18.04 version available, and asked it I wanted to upgrade, but...
  29. Y

    Fortran How to use Real Array Index in Matrix dimension?

    I am developing a FORTRAN code (.f90) which "ll calculate some matrix in some time interval (dt1=0.001) and these matrices have to be integrated in some time steps (dt=0.1). Though I am experience in FORTRAN 77, new to FORTRAN 90. I am unable to make dimension of matrix real (I think that is the...
  30. A

    MANPATH: Undefined variable. % ?

    I am installing an installing an open source software -on Ubuntu 16.04- by reading its 'http://ftp://ftp.chesapeakebay.net/../Modeling/Phase5/community/P53/README.txt' file. At certain point (point 3b in the link) the guideline requires me to run a .csh file located in a certain directory in...
  31. N

    Why “sudo cat /dev/ttyACM0” run only 1 time? (GPS)

    hi group, I am working on the GPS data collection, I Need help. If anyone who has been working on the u-blox GNSS Evaluation Kit Time EVK-M8T before and have seen it, please help. I do not know why sudo cat /dev/ttyACM0 only 1 time. I have the U-blox EVK-M8T which can read the NMEA messages...
  32. gfd43tg

    Port forwarding with ufw ubuntu

    Hello, I am new to linux and I have a few ports that I need to forward to allow me to play my game TCP Ports 1119 and 3724 are forwarded. TCP ports 6881-6999 TCP port 1120 So I used ufw and used the default settings to block everything. Then I allowed the aforementioned ports. ~$ sudo ufw...
  33. N

    C/C++ How to read a list of USB from C++ in ubuntu OS?

    I am trying to use C++ (eclipse in Ubuntu OS) to read USB connection. Usually, on the terminal window, I can use command "lsusb" to see the list. Now, I want to do the same way with C++. can anyone help? Thank you very much.
  34. ShayanJ

    C/C++ ARM programming in ubuntu with C\C++

    I'm thinking about learning ARM programming with C\C++(I think C is a better choice though). But I don't know what tools I can use on linux(ubuntu). I prefer to use open source software. Is there any suggestion? Thanks
  35. F

    Ubuntu on Dell Inspiron 14 Series 5000 - How to Use?

    I use Windows 8, but I also want to use linux based OS. I use DELL Inspiron 14 laptop, series 5000. There's an ubuntu sticker here. Does that mean ubuntu is downloaded? How to get sure/use it then? Please tell, I don't know. If not, then what should I do?
  36. P

    OpenBLAS crashes on Ubuntu 15.04

    Whenever I try to reduce, invert, or factorize matrices of size 10000x10000 my whole system suddenly restarts without any error message. This happens on both julia and MATLAB when I run the command A=rand(10000,10000)^-1; I suspect the problem is due to the linear algebra libraries (I have...
  37. T

    YouTube Videos Extremely Choppy (Ubuntu 15.04)

    When watching videos on Ubuntu 15.04, youtube videos are being EXTREMELY choppy. HTML5 player is on, and it's still choppy. I turned off hardware acceleration, and same result. It's getting to the point where it's annoying.
  38. T

    Macbook Pro, Linux or PC for CC Physics Major?

    I'm just starting school as a Liberal Arts intending to major in Physics at my Local CC. **This question is for FUTURE REFERENCE!*** In regards to software support, what OS would I need? I've heard mixed reports & more forums leaning towards the Macbook Air / Pro side. Is this correct? I'm...
  39. majormuss

    Have trouble running the Fermi software on ubuntu terminal

    Hi all, I recently installed ubuntu on my pc and I am trying to run the Fermi software provided by NASA (http://fermi.gsfc.nasa.gov/ssc/data/analysis/software/). I believe I did all the installation steps right but I am having trouble starting the software. If you are familiar with this...
  40. C

    Comp Sci Need Help Running a program in C++ for Ubuntu (Linux)

    Homework Statement m working on a Engineering Project and I'm having serious trouble trying to run this program in C++. I'm following an example of the program from Program done in C but I'm trying to convert it into C++. I'm going to link the example I'm following and what I'm doing trying to...
  41. B

    Ubuntu 14.04, wireless network cannot connect

    I have recently installed ubuntu 14.04 alongside windows 7 but I'm having major issues with connecting to wireless networks. The networks are detected and show up in the network manager, but when I connect and insert the correct password (double checked), a window continues to pop up saying that...
  42. StevieTNZ

    Ubuntu 14.10 - Modifying .conf file

    Hi there I installed the latest version of Ubuntu (14.10) onto an old desktop, and am trying to make it connect to the Workgroup all other computers in the house are on. I installed Samba as per the instructions here -...
  43. StevieTNZ

    Ubuntu 14.04 & Windows VNC Program

    Hi there A while back I updated Ubuntu to version 14.04. Before this, I could connect to the machine through TightVNC from my Windows 8.1 laptop. However after the upgrade things didn't run smoothly. It is now a known bug that usual VNC software can't connect to Ubuntu 14.04 because it uses...
  44. SalfordPhysics

    DISLIN Installation Process for Ubuntu Linux

    I am currently trying to install DISLIN for use with Fortran90 on Ubuntu, following the steps from DISLIN; - ftp://ftp.gwdg.de/pub/grafik/dislin/linux/i586_64/README.I586_64 RPM Distribution Installation was successful. This is not the case however for DEB Distribution of DISLIN...
  45. Fredrik

    Troubleshooting Wireless Connectivity Issues with ndiswrapper on Ubuntu

    I decided to use an older computer that's been collecting dust for a few years to learn some Linux, so I wiped the drive and installed Ubuntu. I recently bought a new wireless network card with a USB connection, and I decided to use it with this computer. I found some instructions online and...
  46. Hepth

    [Ubuntu] Why is my computer slow (jk, but seriously )

    So I know an awful lot about computers. Currently at work they have me on this older Core2 with Ubuntu 12.04 and 2GBs of ram. The computer itself is fast and fine, UNTIL you have some programs open. When looking at "htop" (a better version of "top" in unix) I see that if I have mathematica open...
  47. caffeinemachine

    MHB Inconsolata font in Vim. Ubuntu.

    Hello MHB, I started 'using' vim editor in Ubuntu three days back. I think it is a great tool to have. However, since I am a newbie at a linux system, to get anything done I have to irritate my friends with a lot of questions, some of which they cannot answer on phone. So here's my latest...
  48. T

    Ubuntu Install on new external hdd

    Just a quick question, will I have to partition the new hdd, to load the OS or will it be okay to install OS straight onto?
  49. B

    Fortran Fortran on ubuntu using f95 code help

    I have the following code with error- I want this general flow. Errors I get are missing ')' at the do while line, syntax error on the line started with ****(not part of program added after fact) and expecting END Program statement at line end do counter=1 user_reaction =3 do while (counter...
  50. M

    Fortran Compiling a Fortran 77 Code on Ubuntu

    Hi, I have a fortran 77 code, I compiled it on cygwin in windows 7 by using f77 and gfortran, and it has been working correctly. I should use this code on Ubuntu, so I installed f77, gfortran and gcc compiler. I tried to comile that code by using f77 but it gave me the following error: > f77...
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