bug#35961: 27.0.50; Sometimes frame freezes and stops updating (almost entirely)

[Dmitry Gutov]

On 31.05.2019 18:25, Eli Zaretskii wrote:

> Yes, but if you are thinking about some thread in that
> toolkit/windowing library getting stuck while others continue working,
> you can try starting Emacs in X synchronous mode (etc/DEBUG has the
> details), then Emacs will wait for each X call to return, and X will
> not return until the request completes.  If you see the same problem
> in that case, i.e. some frame(s) become not responsive while others
> don't, it is almost certainly not an Emacs problem.

Thanks, I'll look into that if the problem persists (and if I can find a 
repro).

The last time it happened, though, I observed the same effect in another 
program, so this is probably not Emacs's fault. And I haven't seen the 
problem since the day this bug was filed.