Running Unity on Ubuntu 22.04

> ./UnityHub.AppImage --disable-gpu-sandbox

I am slightly confused. Didn't the Unity drop support for Appimage version of Unity Hub? (I would be happy if it didnt) But from the other UnityHub linux posts I got the impression that from now on only supported way is installing UnityHub by adding Unity repositories to the system pacakage manager.

 

Howdy!

I am on Ubuntu 22.04. I was able to get the Unity Hub launched with the disable gpu sandbox flag. It did not find my Unity License though. It was able to find my Unity License before I upgraded from Ubuntu 20.04 to 22.04. When I try to add the license file the "Activate with a serial number" option is grayed out. I checked my account, my Unity License is still active and assigned to me.

I also tried installing UnityHub from the Unity repo. That version just crashes on launch.

Any pro tips to get my Unity install working again would be epic!

Best,
David Brooks

 

Ah, I feel silly. Once I installed libssl1.1 it worked just fine.

 

I'm getting this error:
[11181:0615/124525.183860:FATAL:electron_main_delegate.cc(252)] Running as root without --no-sandbox is not supported. See https://crbug.com/638180.
Trace/breakpoint trap (core dumped)

Any suggestions?

 

It works with wayland?

 

still getting a black screen for unity hub after all those steps
edit: nevermind it seems like I needed to restart the pc as it is now working

 

This is what finallly worked for me.

 

where did you get the appimage? it is not longer provided

 

I keep getting this error:
ERROR: Licensing SDK logging callback is not registered. Please use 'registerLoggingAdapter' func
tion from the SDK to do so.

 

Hello! I didn't have the problems you describe. The desired version of the unit was easily installed and launched. Now 2 unsolvable errors.

1. The dotnet and mono6 SDK extensions are required for the Unity debugger to work.
Please install it from Flathub. (Install flatpack 22/04 no find )

2 WebGl audio clip error.

PopOS 22.04LTS

 

I once used flatpack and they had problems integrating with unity. I have a manjaro. There were no problems when using the - aur source. Maybe you should use deb packages

 

It's not that they had "problems integrating" but rather it's an unofficial, community-maintained source. Which is unfortunate since if Unity offered an official flatpak version in the first place, they wouldn't have this dependency problem to begin with. Dropping the AppImage (and not offering a replacement with either flatpak or snap) was a poor decision on their end. Feels like they're going backwards.

 

Thanks for all your work on Unity for Linux

 

I will try migrate my Windows dev env to Ubuntu dev env, but the Unity Editor in Ubuntu is very slow. The game project is the same and it uses Assembly definitions files.

Problem in Ubuntu: Any script modification (add a space) results in a Reload Script Assemblies (5 minutes or more).

 

im running kubuntu 22.04 the unity hub installs and works perfectly but it does not install any version of unity i tried 2019 and 2020 plus 2021 it just gives an error failed to install and when i was checking the compressed files it said file corrupt or damage might be missing some files

 

Does Unity have any plans to update Unity Hub to support libssl3 in the near future?

The following post mentioned using libssl1.1 on Ubuntu 22.04 seems to be a very bad idea:
https://askubuntu.com/questions/140...3747878c318b982550fbc8#comment2453912_1408000

I tried the workaround mentioned in the OP here, but ever since then, I kept getting the error "The repository 'http://security.ubuntu.com/ubuntu impish-security Release' does not have a Release file." whenever I run sudo apt update. I read that I could just comment out some lines in the impish related files in /etc/apt/sources.list and /etc/apt/sources.list.d, but I wasn't sure if there won't be any other system or security problems down the line.

Is the workaround using libssl1.1 even a secure workaround? It would be much appreciated if Unity Hub could support libssl3 on Ubuntu 22.04 so that workarounds are not needed.

 

After running these commands I'm getting

E: Unable to locate package libssl1.1
E: Couldn't find any package by glob 'libssl1.1'
E: Couldn't find any package by regex 'libssl1.1'

Also, even after I install libssl1.1 from https://packages.ubuntu.com/bionic/amd64/libssl1.1/download, Unity Hub still freezes on the loading screen.

 

I am seeing the same error when I tested it out just now on Ubuntu 22.04. It looks like that repo is no longer accessible since I am also seeing the error below when running sudo apt update.

Err:9 http://security.ubuntu.com/ubuntu impish-security Release
404 Not Found [IP: 91.189.91.38 80]

 

I have the package libssl1.1 installed and I don't have a problem starting Unity Hub or the Editor. However, for the 2021 Edítor and newer, I get a crash every time I open e menu window, like for preferences. I tested on two very different computers (one intel Laptop and one AMD desktop) even on Plasma Desktop as well. I have no problems on the same laptop running Fedora 36. Here is the link to the bugreport: https://unity3d.atlassian.net/servicedesk/customer/portal/2/IN-18682

 

The line from first post for libssl1.1 download

echo "deb http://security.ubuntu.com/ubuntu impish-security main" | sudo tee /etc/apt/sources.list.d/impish-security.list

doesn't work properly anymore, it is related to ubuntu 21.10 deprecation. The one that still works and should be used instead is:

echo "deb http://security.ubuntu.com/ubuntu focal-security main" | sudo tee /etc/apt/sources.list.d/focal-security.list

 

@ryanjo Are there any plans to move to libssl3?

 

Just add official Docker instructions for unity so we can have a dev environment that works on any OS.. please.. There's no way I am downgrading to deprecated libssl just to install unity. It's going to break a million things. Now I have to run unity in a VM but it should be easy to just run it inside a container.

 

There have been 5 releases of Ubuntu since the Unity recommended 20.04 - almost coming on 3 years out of date. That's a lot of security, updates and fixes being missed out on. You can't even download 20.04 directly from Ubuntu anymore (it's all bittorrent afaict) without doing a bit of a deep dive. Is Linux support dead?

 

Yes it is.

I think it's pretty clear by now that Unity will never fix the LibSSL issue. Whoever is in charge of Unity Linux port obviously don't understand how Linux works.

 

Any ETA for when it will be finally usable on Ubuntu 22.04? You guys cannot be serious having posted this back in May and still not supporting 22.04. Is "currently working to support Unity Editor on this edition of Ubuntu" the french for "we'll never fix the libSSL issue and you guys are screwed?"

 

They won't fix it. They can't make a version that would use both the old and the new libSSL. The solution is Flatpak but they don't want to use it. In the meantime you must either install the former Ubuntu LTS or do package shenaniganery.

 

I'm getting a new error now on Ubuntu 22.04.1 LTS and 3.4.1 release of Unity Hub

Code (CSharp):

1.  (zenity:3553): dbind-WARNING **: 14:47:16.998: AT-SPI: Error retrieving accessibility bus address: org.freedesktop.DBus.Error.ServiceUnknown: The name org.a11y.Bus was not provided by any .service files

 

Hi,

you can install unityhub just by executing these instructions:

wget http://archive.ubuntu.com/ubuntu/pool/main/o/openssl1.0/libssl1.0.0_1.0.2n-1ubuntu5_amd64.deb
sudo dpkg -i libssl1.0.0_1.0.2n-1ubuntu5_amd64.deb
sudo sh -c 'echo "deb https://hub.unity3d.com/linux/repos/deb stable main" > /etc/apt/sources.list.d/unityhub.list'
wget -qO - https://hub.unity3d.com/linux/keys/public | sudo tee /etc/apt/trusted.gpg.d/unityhub.ascsudo apt update sudo apt install unityhub

Enjoy

 

I guess with all the S*** thats going on currently, I doubt 22.04 will be supported, much less wayland for the editor. I can launch the editor, it works fine, but its laggy and the add components window does not work :/

 

I've used it on Ubuntu 22.04 for about six months, and it's been working great. Now... my Ubuntu installation is based on upgrades on supported distros 18.04->20.04->22.04, I don't know if that has an impact but at least that is what I have....

 

Maybe the SSL version issues between Unity Hub and Ubuntu 22 have been fixed now? I'm able to install and run Unity Hub 3.6.1 on Ubuntu 22.04 using the standard "apt install" instructions from the "Install the Unity Hub on Linux" doc page on the Unity web site.

... but there's another problem happening in Ubuntu 22: the top toolbar buttons and Scene Editor UI buttons are invisible (but still can be clicked) There are many mentions of similar problems in Unity Editor, but all different platforms other than Ubuntu, different Unity versions, and different causes. I tried tweaking many Unity preferences, reload the app, reload the layouts, tried different Ubuntu desktops, tried different display managers, different OpenGL-related settings ... none of it made any difference with this issue in Ubuntu 22. So I reverted back to Ubuntu 20, same hardware, default desktop config, default Unity settings, and the Unity Editor UI is working totally fine.