Questions tagged [mono]

Mono is an open source project aimed at bringing .NET compatible technology to the open source world. This technology includes a C# compiler and the Common Language Runtime.

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Enable Mono Audio output in Ubuntu 22.04lts

I would like to enable mono audio output through my earphone;this was possible previously in ubuntu 20.04(vanilla) with these instructions: Can I downmix stereo audio to mono? However,it doesn't seem ...
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30 views

Unable to open a file using a custom program that has been added to 'open with' list

This is essentially a windows program for editing subtitles. I've been using another program called mono to run it. The program itself runs fine. I then created a .desktop file that looks like this. [...
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N: Skipping acquisition of configured file 'main/binary-i386/Packages', ... 'https://download.mono-project.com/repo/ubuntu stable-focal InRelease'

Full Error N: Skipping acquisition of configured file 'main/binary-i386/Packages', as repository 'https://download.mono-project.com/repo/ubuntu stable-focal InRelease' doesn't support architecture '...
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Cannot import GPG keys via apt-key

I'm trying to install mono on my Ubuntu 20.04 server. I followed the official install instructions on: https://www.mono-project.com/download/stable/ When executing: sudo apt-key adv --keyserver hkp://...
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2 votes
1 answer
550 views

Tried to install mono. Now apt is broken [duplicate]

I tried to install mono for Ubuntu 20.04. I used these commands. sudo apt install gnupg ca-certificates sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys ...
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3 votes
1 answer
56 views

How to delete all packages from a repository and then delete the repository and then delete the signing key?

I'm running Ubuntu 21.10. I made a mistake and downloaded Mono that's supposed to be used on a older version and now it's giving me error messages like: Sub-process /usr/bin/dpkg/ returned an error ...
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5 votes
1 answer
133 views

Is it possible to force all audio to mono?

I am deaf in one ear and want Ubuntu to mix both left and right audio channels to mono audio. There is an Accessibility Setting for this in Windows, but I cannot find one in Ubuntu. The only Hearing ...
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1 vote
1 answer
134 views

problem with installing photoshop

I've tried install photoshop cc in ubuntu 20.04 but I got some error in my terminal. First I wanted to install via wine but I got this: "The following packages have unmet dependencies: winehq-...
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202 views

Gecko is not installed for Wine 7.0.0

(Note: a previous version of this question was overly verbose and didn't get to the point. I have completely rewritten it.) On January 7 2022 (~3 weeks ago), I installed Wine following the WineHQ ...
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13 views

Unmet dependencies mono [duplicate]

plex@ubuntu:~$ sudo apt install mono-complete Reading package lists... Done Building dependency tree... Done Reading state information... Done You might want to run 'apt --fix-broken install' to ...
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1 vote
0 answers
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Ubuntu very slow - mono command

I have Ubuntu 20.04 and very often it is very slow. Using TOP during these slow times I notice command "mono" is taking 80%-100% of the CPU. What is the mono command, do I need it, and how ...
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Ubuntu 18.04 cannot install mono

(I've examined the seemingly similar questions I can find and get to know it's not a duplicate.. Error message: Err:1 https://download.mono-project.com/repo/ubuntu stable-bionic/main amd64 libmono-...
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Just installed 20.04 and only Mono-Sound

I have just installed 20.04 on a 60GB partition of the SSD alongside windows and Ubuntu-18.04. I did the Update and 309-Upgrades. Everything is good except the sound. I only get Mono and a pretty ...
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How do I specify program arguments to subtitle-edit installed via snap?

I've installed subtitle-edit via snap. $ snap install --edge subtitle-edit I want to use the command line to convert but when I do mono complains about unknown arguments. $ Jurassic Park: subtitle-...
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1 vote
1 answer
466 views

Why does Pinta crash immediately after opening an image on Ubuntu 20.04?

When opening pinta on the command line the app quickly crashes after opening an image and complains about a call to free() erroring out before doing a full memory dump.
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Monodevelop error

Steps i do: I open the program I create a new solution (with name, directory etc...) The program fails to "restore packages". The problem seems related with Nuget (idk what it is). I have ...
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31 views

Could not run application using Mono

My Local Server: Windows 10. I have installed Xming. My Remote Server: Ubuntu 20.04. Both mono and xorg is installed. X11 forwarding is enabled on sshd_config file as well. I connected to my remote ...
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1 vote
1 answer
281 views

How to redirect the output from desktop-entry

I have a program called prg.exe written in C#. I want to run this program in mono with an argument (arg1) and redirect the output to a log file called log.txt. If I open a terminal and enter the ...
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2 votes
0 answers
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How to solve: Skipping acquire of configured file 'main/binary-i386/Packages' for mono-project? [duplicate]

whenever i try to run sudo apt update, i get this error: N: Skipping acquire of configured file 'main/binary-i386/Packages' as repository 'https://download.mono-project.com/repo/ubuntu stable-focal ...
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1 answer
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How to run Mono on Ubuntu 18.04?

I have installed mono from Terminal. How am I going to run it?
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1 answer
389 views

Can't install mono [duplicate]

I'm currently stuck and cannot install mono-devel on my PC. I've installed the mono keyring and repo, but whenever I try to install it I get this: Some packages could not be installed. This may mean ...
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-1 votes
1 answer
382 views

Unable to install Wine - list of sources could not be read

I tried to get Wine (because I saw that I can't use .exe files in Ubuntu) but I didn't know about sudo add-others... I randomly walked to some kind of Mono. I entered it and it didn't continue for ...
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1 vote
1 answer
735 views

Ubuntu 20.04 Mono CSC Compile Not Working

I receive an error when compiling "hello.cs": using System; public class HelloWorld { public static void Main(string[] args) { Console.WriteLine ("Hello World!"); ...
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1 vote
1 answer
471 views

How do I install mono 5.18.0?

I would like to install Mono 5.18.0 on Ubuntu 20.04. All I could find was an installation guide for accessing older releases which technically breaks down to: If you want to pin an older version of ...
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What were the requirements for running Visual Studio IDE on Ubuntu? Can we develop IDE like it for Linux? [duplicate]

I'm looking for deep knowledge for running Visual Studio IDE in Ubuntu. Can anyone tell me what were the requirements to do so. Ofcourse wine is a process available but as It themselves says vs2019 ...
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1 answer
258 views

I can't download the wine-mono the problem could be in the server

I install wine --stable and try to install wine-mono through it automatically went prompted but I Can't download wine-mono or gecko it could be the server problem or the problem is in my network ...
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2 votes
1 answer
4k views

How do I get radarr.service to start automatically?

I have installed radarr successfully, but it will only run if I use terminal and type: mono ~/Radarr/Radarr.exe When I close terminal, radarr will stop working so I followed the instructions on wiki ...
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3 answers
6k views

Bluetooth headset only plays sound in mono

My brand new JBL Bluetooth headset only plays sound in mono. Resetting Bluetooth in an attempt to fix it doesn't help - all Bluetooth services go off and the headset is no longer in the list of sound ...
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70 views

Only left channel being converted to mono

When I plug my low-quality mono earphones into my motherboard (green audio slot), I hear sound in both the left and the right earplugs. Now if the sound being played is also mono then this is fine, ...
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0 votes
0 answers
305 views

Problem installing Z3 in ubuntu 16.04

I downloaded Z3 from https://github.com/Z3Prover/z3 on Ubuntu 16.04, but the compiled file microsoft.z3.dll is installed in the project directory instead of the mono or GAC folder, and the programs do ...
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1 vote
0 answers
244 views

Installing z3 on Ubuntu 18.04

I installed Z3 on the mono in Ubuntu 18.04 according to the steps mentioned at https://github.com/Z3Prover/z3 and got the message of success, but Z3 does not work properly and it is not in the ...
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0 votes
1 answer
606 views

SIGSEGV when trying to launch Unity3D game

Here is the crash log when I try launching it via Steam, looks like something to do with the mono runtime, but I have confirmed that I have mono-runtime installed via the official 18.04.4 repository: ...
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1 vote
1 answer
147 views

Cannot open Pinta on my Ubuntu 16:04

I tried purging the application and installing again, but it didn't work. When I tried apt-get clean after removing Pinta again, here is the output: The following packages were automatically installed ...
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11 votes
4 answers
12k views

How to install Monodevelop in 20.04 and get it to build something?

I am trying to setup a development machine using 20.04 and am having problems with the Monodevelop environment. Whenever I create a solution and project it seems that it cannot find the proper build ...
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4 votes
1 answer
4k views

KeePass and Ubuntu 2020 Setup (with Chrome, Firefox)?

I spent about a day and a half working through all the various and mostly out of date KeePass option for Ubuntu (Kubuntu). I want to share what I've found and ask for other answers regarding the many ...
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0 votes
1 answer
516 views

Cannot install Wine on Ubuntu 18.04 lts [duplicate]

After installing per the installation instructions from Wine: sudo dpkg --add-architecture i386 wget -nc https://dl.winehq.org/wine-builds/winehq.key sudo apt-key add winehq.key sudo apt-add-...
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1 vote
2 answers
1k views

error on install Community Server/ Document server onlyoffice

when try to install only office server based on there Installing Community Server for Debian, Ubuntu and derivatives so step by step until the latest command sudo apt-get install onlyoffice-...
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1 vote
1 answer
3k views

How to load dll to C# in mono and run it

I have some Selenium test cases which were written in Windows. Now I want to run them in Ubuntu. I found a way to link my C# program and selenium dll using this solution, but I'm getting the following ...
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0 votes
0 answers
152 views

Package system broken after installing mono [duplicate]

I was trying to install the latest version of mono... but now somehow my package manager is broken with the error: Error: Broken Count > 0. When I try to install any package using the software ...
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0 votes
1 answer
9k views

How can I host DayZ Standalone on a remote Linux server? I'm getting "Wine Mono is not installed"

I am trying to host a DayZ Standalone Server on Linux and I need Wine to run the EXE file. I have downloaded wine 2 different ways: Winehq and wine64 neither of which have worked. When I try to ...
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1 vote
0 answers
97 views

How to downgrade mono 3.12.1 to 3.0.0?

I got exception: System.IO.FileNotFoundException: Could not load file or assembly 'system.Windows.Forms, Version =3.5.0.0 ... I think that mono version 3.0.0 can solve the problem but I can't ...
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6 votes
1 answer
11k views

How to develop for Android with Xamarin?

I want to develop applications for Android in C#. On Windows I tried Xamarin Studio and I was very happy with it. Is there a way to use Xamarin on Ubuntu? I noticed there are Xamarin.Android binaries ...
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1 vote
0 answers
293 views

Cant install libmono-cil-dev

Can anyone help with the following? The following packages have unmet dependencies: libmono-cil-dev : Depends: libmono-http4.0-cil (= 5.18.1.0-0xamarin4+debian8b1) but it is not going to be ...
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3 votes
0 answers
1k views

monodevelop error: libgluezilla not found

ubuntu19.04 disco, monodevelop 7.8.4(build 2) Using monodevelop, I created a new solution(form based gtk# gui application). I added a Windows.Forms.Webbrowser control to my Form1. When I start ...
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1 vote
1 answer
1k views

System namespaces missing MonoDevelop on fresh install

I am wondering if anyone can help me, I did a fresh install of MonoDevelop on a fresh install of Ubuntu 18.04.2 LTS with .NET Core 2.2 installed (everything updated), then followed the instructions ...
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3 votes
1 answer
255 views

Is mono-devel needed?

Ubuntu 18.04, Cinnamon. Recently installed Pinta and it has that issue where it just crashes and closes. It's no longer supported unfortunately so searched and came up with a supposed fix. It was ...
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4 votes
0 answers
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How can I instal Docky on Ubuntu 19.04

I've been using Docky for almost 10 years. Yesterday I upgraded Ubuntu to 19.04 and to my surprise I realised that during the upgrade Docky got removed. I tried adding Docky PPA again, but got the ...
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0 votes
1 answer
1k views

how to install mono on ubuntu 18.04

this is the code that i'm trying to use sudo apt install gnupg ca-certificates sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv-keys 3FA7E0328081BFF6A14DA29AA6A19B38D3D831EF echo "...
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0 votes
0 answers
594 views

Installing mono on ubuntu: mono-devel : Depends: libglib2.0-0 (>= 2.56.3) but 2.56.1-2ubuntu1 is to be installed

I'm following https://www.mono-project.com/download/stable/#download-lin-ubuntu to install mono on ubuntu. However in the last step I get sudo apt install mono-devel Reading package lists... Done ...
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0 votes
1 answer
568 views

mono update - ca-certificates-mono - available 240 looking for 268

There has been some time that mono would not update. The problem is that this message stops other updates so even if I try to remove mono-develop I am failing. apt-get says: mono-devel : Depends: ca-...
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