I have stock KUbuntu 24.04. One thing I've noticed, if I download an AppImage containing an Electron GUI app, it will not run:
[254192:0212/190140.946364:FATAL:setuid_sandbox_host.cc(158)] The SUID sandbox helper binary was found, but is not configured correctly. Rather than run without sandboxing I'm aborting now. You need to make sure that /tmp/.mount_WhalebptLZLj/chrome-sandbox is owned by root and has mode 4755.
I believe they used to work on previous LTS Ubuntu 20.04. I've tried Outline management console as well as fresh Whalebird release. They don't work. Apparently there's the whole blah blah yadda yadda regarding recent Ubuntu AppArmor changes affecting Electron, but as an user, bottom line, should I expect Electron-based AppImages to work for me in the future on Ubuntu, or is it an officially a dead technology? In their Wiki I see mostly dead software with last commit 3-6 years ago.
I will rule out tweaking system settings with systemctl and only stick to official installation routine "download AppImage, chown file, run it".
