make lxc-console work non-confusingly by default on touch images

[Jani Monoses]

I learned after a few failed tries previously that lxc-console works on the touch images if it uses tty0 and if a return is pressed after the greeting. This is not easy to discover. Would there be a way to set good defaults here without affecting non-touch uses of lxc-console?

[Stéphane Graber (stgraber)]

So to repeat what I've said on IRC.

There seems to be two ways to deal with that, the ideal one I believe would be to have lxc-console attach to tty0 when the container is backgrounded and lxc-start isn't itself attached to it, however figuring this out isn't currently possible from an API client and it'd probably require a break of both the API and the internal communication protocol so we can store and query that extra state.

Alternatively, we could have lxc-console attach to tty0 when lxc.tty = 0 which I believe would cover the Ubuntu Touch use case and shouldn't require any change to the API or internal protocol, it'd just be a matter of having lxc-console query lxc.tty and attach to 0 if lxc.tty == 0.

[Serge Hallyn (serge-hallyn)]

> Alternatively, we could have lxc-console attach to tty0 when lxc.tty = 0

That seems reasonable.

[Serge Hallyn (serge-hallyn)]

Has this been worked around in the touch images, or is this still needed?

[Jani Monoses (jani)]

nothing has changed on touch AFAIK.

[Stéphane Graber (stgraber)]

Ubuntu Touch hasn't been a thing for a few years and UBPorts hasn't really been hitting this issue as far as I know.