Simon McVittie

If you run Steam with `STEAM_LINUX_RUNTIME_VERBOSE=1` in the environment, that will put more information in `webhelper-linux.txt` which might help to diagnose this further.

> Ideally, I would rather use Flatpak, as it isolates from the rest of the system. Valve does not generally provide support for the unofficial Flatpak app, and it's more...

> it crashes whilst trying to load `libva` No it doesn't: that's a debug message, not a fatal error. Please read that as "I tried to do this, but there...

Looking at the `webhelper-linux.txt` in your latest `steam-logs-native.tar.gz`, it seems like the container runtime setup might be hanging (or possibly crashing? no longer producing output, anyway) at a point shortly...

> The Flatpak has the following line, which might be why it crashes: > > > (zenity:5447): Gdk-WARNING **: 23:53:26.753: Failed to read portal settings: GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface “org.freedesktop.portal.Settings”...

> My proposal is that we split this issue into two distinct problems - what do you think? I don't think there is enough information here yet to know whether...

> src/steamUI/steamuisharedjscontroller.cpp (653) : Failed creating offscreen shared JS context As far as I can tell without access to the proprietary Steam code, this just means "I wasn't able to...

> This is only exposed in Meson as Autotools isn't recommended. Actually the PR as proposed here would let Autotools users do something like `./configure FUSERMOUNT=fusermount3`, which seems sufficient to...

If the app does start a sub-sandbox, then this is working as intended. They are technically two different instances, and the presence of the second cgroup lets you distinguish between...

Technically, Flatpak subsandboxes *are* a separate instance: if you look in `/proc/$pid/root/.flatpak-info` or `flatpak ps` you'll see that they each get a separate instance ID. There is currently no programmatic...