looks like a path or shortcut issue but doesn't make much sense (Maybe this info will be more helpful to someone who knows Linux better then me). If I go to "/opt/YouTube Music" in the files app and double click on the executable youtube-music it will launch the app. This is strange because the "/usr/share/applications/youtube-music.desktop" points directly to that same file. I also tried running "/usr/bin/youtube-music" or changing the desktop file to that location and still get the same error. Unsure why I can go directly to the app in files and run it but not as a shortcut, so very strange. I can run it from files app directly but not from the terminal. So very strange.

looks like a path or shortcut issue but doesn't make much sense (Maybe this info will be more helpful to someone who knows Linux better then me). If I go to "/opt/YouTube Music" in the files app and double click on the executable youtube-music it will launch the app. This is strange because the "/usr/share/applications/youtube-music.desktop" points directly to that same file. I also tried running "/usr/bin/youtube-music" or changing the desktop file to that location and still get the same error. Unsure why I can go directly to the app in files and run it but not as a shortcut, so very strange. I can run it from files app directly but not from the terminal. So very strange.

Maybe the desktop file is configured for Wayland and you are in x11?

Can you share ur desktop file?

The initial setup was on wayland, now i've change to x11. Same error.

[Desktop Entry]
Name=YouTube Music
Exec="/opt/YouTube Music/youtube-music" %U
Terminal=false
Type=Application
Icon=youtube-music
StartupWMClass=YouTube Music
Comment=YouTube Music Desktop App - including custom plugins
Categories=AudioVideo

I also receive the error if I try to run it directly from terminal "/opt/YouTube Music/youtube-music" on Wayland and x11. The only way I can get it to run is to use files to go directly to /opt/YouTube Music/youtube-music and double click on it.

The reason is, that in Ubuntu 24.04 we have restricted user namespaces (which affects electron being able to spawn a sandbox)

See electron/electron#41066

See https://ubuntu.com/blog/ubuntu-23-10-restricted-unprivileged-user-namespaces

and https://discourse.ubuntu.com/t/noble-numbat-release-notes/39890#unprivileged-user-namespace-restrictions-15

See here for some fixes regarding bwrap, (which we could use similar fixes, I am currently testing that)

Solutions

There are two possible solutions fro this problem in Ubuntu 24.04:

Solution 1 :

Add a apparmor profile for youtube-music, so that it can use user namespaces (userns)

To do this this, create this file /etc/apparmor.d/youtube-music and add this content to it

# This profile adds the "userns" flags to the otherwise "unrestricted" flags, this is needed, since electron uses user namespaces (userns) to run a sandbox, and this app uses electron

abi <abi/4.0>,
include <tunables/global>

profile youtube-music "/opt/YouTube Music/youtube-music" flags=(unconfined) {
  userns,

  # Site-specific additions and overrides. See local/README for details.
  include if exists <local/youtube-music>
}

and than run

sudo systemctl reload apparmor

Taken from here and modified accordingly.

Tested locally, it works.

Solution 2:

disable this restriction ( might also help for other apps, that crash otherwise)

sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0

And then you have to reboot.

this disables the restriction against unprivileged user namespaces.

This app should ship the /etc/apparmor.d/youtube-music with the correct content in it in the debs, rpms etc, as some other popular electron applications do (like e.g. vscode). I am investigating where this should be done (in electron-vite, electron-builder or in this repo)

Edit:
My investigations resulted in the following:

It is not possible to add a file to /etc/apparmor.d/youtube-music with electron-builder. I looked into some packages, that have a profile that includes userns flags in the profile, and they are shipped via the apparmor deb of ubuntu 24.04 (filelist).So none of the debs (e.g. vscode) ships it itself. Since we are certainly not able, to add "our" youtube-music file into that deb package, we have to do it ourselves. So either electron-builder needs to support that, or we add this file via some "magic" in the postinstall and remove it via rm in the postrm shell scripts 🤷🏼‍♂️

The first option is a better option, but for that we need to do submit a PR doing that to electron-builder (for which I currently don't have the time to 😓 ) . So if someone sees this and has the time to do so, feel free to do it ❤️

guy, just update your kernel to version 6.9.12 and everything fix