Comment # 9 on bug 1215872 from Aaron Puchert

Sorry for the late reply.

(In reply to Markus Elfring from comment #8)
> I would occasionally like to use an other development repository directly.

Understood, but then you're on your own, or have to discuss with the owner of
that repository.

> Repetition:
> I saw the German message “Kommuniziere mit dem BOINC Client. Bitte warten
> ...” within a modal dialogue which was similar to the English message that
> was shown also in a screenshot from Austin Conlon on 2020-10-05.

So the actual issue is not necessarily related to idle detection. That this
doesn't work, as indicated by the log messages, might be unrelated to the
failure to communicate.

> > But I'm not sure if this will help you.
> 
> How do you think about to inspect the control flow between the called
> functions “XOpenDisplay” and “CheckAuthorization” any further?
> https://gitlab.freedesktop.org/xorg/lib/libx11/-/blob/
> c745719e23af44a4b40ab4508447637b35d91a1e/src/OpenDis.c#L60
> https://gitlab.freedesktop.org/xorg/xserver/-/blob/
> 722e464bffdcfc7c4beb00e0995c105bc431d0d4/os/auth.c#L164
> 
> Would you find a loop which would hinder the return of a null pointer?

You could certainly try in a debugger, or index the code base and go through
the call graph manually. But for now I don't think we have enough information
to be sure that is your problem.

> > XSS idle detection should not block,
> 
> This is a reasonable expectation.
> I came along other observations.

Did you actually observe such a call being stuck? I didn't see any indication
of that. And if it gets stuck, where? If there is no progress with ~100% CPU, a
profile might be interesting, with ~0% CPU something offcputime from bcc-tools
should help. Just guessing based on the log won't get us there.

> [XSS idle detection] can eventually be relevant for development software variations.

But not for the package that we're going to ship. If we're going to ship idle
detection again, it will have a service running under the logged-in user that
communicates the idle state to the BOINC client, and that ideally works with
Wayland as well.