Chrome-sandbox error can't start

[servomekanism]

The appImage binary (./superProductivity-2.6.1-x86_64.AppImage) can't start on my linux box.
It reports the following:

zenity, kdialog, Xdialog missing. Skipping /tmp/.mount_superPjindcV/AppRun.
[5875:0510/021957.574089:FATAL:setuid_sandbox_host.cc(157)] 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_superPjindcV/chrome-sandbox is owned by root and has mode 4755.
Trace/breakpoint trap (core dumped)

[ArjenR]

Hi, I happened to run in to this one also.

IIRC it is due to a new security option in Electron and user namespaces that needs to be enabled using sysctl in your kernel for this to be allowed.
kernel.unprivileged_userns_clone=1

[danielestevez]

It seems that workaround by @ArjenR or the solutions here electron/electron#17972 do not work with snap installed app -> scratux/scratux#1 (comment)
Still trying to find a solution,,,,

[ArjenR]

I use the appimage. So if you cannot be without, perhaps downgrade to an ealier version or switch to appimage as workaround?

[danielestevez]

Never used appImage.
i won't downgrade just in case i get some data corruption 😨 and for AppImage i guess it's the same problem, i cannot export my data and import to the AppImage version

[ArjenR]

The data is not stored inside the snap or appimage, but in your userprofile.
~/config/superProductivity/
Just make a backup of that one to be sure there is no corruption.

[danielestevez]

btw i could open the snap version by running from the directory

/snap/superproductivity/current/superproductivity --no-sandbox

Now working in trying to recover my data

[johannesjo]

Thanks everybody for looking into it. Don't have my linux laptop with me, but downgrading electron might fix this. Can't say if this will have any side effects though. I will publish a pre release in a minute or so (candiate/edge channel for the snap version).

Would be really nice if someone could test this and report if the issue still persists.

[servomekanism]

version 2.6.3 works in my system! ;)

[thomasnordquist]

The initial comment provides a workaround to disable the sandbox for Linux builds.
electron-userland/electron-builder#3872

[danielestevez]

Thanks @johannesjo !! I can confirm the snap version works in Ubuntu without the workaround of kernel.unprivileged_userns_clone
EDIT: Guess we could close this one?