[BUG] no sandbox under Ubuntu 24.04

[Tacitoku]

Code of conduct

• I have read and agree to adhere to the Code of Conduct

Self-training on how to write a bug report

• I have learned how to write a bug report

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

After updating the OS to Ubuntu 24.04 and executing the latest Session AppImage from the commandline, it terminates with this message:
[22482:1116/152451.248313:FATAL:zygote_host_impl_linux.cc(127)] No usable sandbox! Update your kernel or see https://chromium.googlesource.com/chromium/src/+/main/docs/linux/suid_sandbox_development.md for more information on developing with the SUID sandbox. If you want to live dangerously and need an immediate workaround, you can try using --no-sandbox.
on the referenced site one reads:
IMPORTANT NOTE: The Linux SUID sandbox is almost but not completely removed. See https://bugs.chromium.org/p/chromium/issues/detail?id=598454 This page is mostly out-of-date.

Starting the AppImage with the option --no-sandbox works, but is not a secure method of use.
Moreover the external dependence is outdated.

A convenient solution from the user's point of view would be an installation program that checks the dependencies on the target operating system and then installs everything necessary.

Expected Behavior

The Session UI should start.

Steps To Reproduce

1. install Ubuntu 24.04
2. download the Session AppImage for this OS
3. start the AppImage from the commandline
4. start the AppImage with the option --no-sandbox from the commandline

Desktop Version

session-desktop-linux-x86_64-1.14.2.AppImage

Anything else?

No response

[Bilb]

Hey, could you try using the deb package instead and let me know if that works?

[Tacitoku]

Thanks for the hint, which solves the issue.
At first I searched on https://getsession.org/download for the instruction to install session-desktop using the dep package.
Then I found the link to https://deb.oxen.io/ on https://github.com/oxen-io/session-desktop where I finally found the commands to install using the dep package:

    sudo curl -so /etc/apt/trusted.gpg.d/oxen.gpg https://deb.oxen.io/pub.gpg
    echo "deb https://deb.oxen.io $(lsb_release -sc) main" | sudo tee /etc/apt/sources.list.d/oxen.list
    sudo apt update
    sudo apt install session-desktop

And now session-desktop works great again on Ubuntu 24.04!

Would it be good idea to inform the user who want to install session-desktop for Linux on https://getsession.org/download that there is an alternative way besides downloading the AppImage?

[KeeJef]

Yeah we should add a button to the website which links to instructions on how to install the .deb ( alongside the appimage button), tracking internally via WEB-350