From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ludovic =?UTF-8?Q?Court=C3=A8s?= <ludo@gnu.org>
Subject: bug#38163: GDK does not return the monitor's refresh rate
Date: Mon, 11 Nov 2019 21:53:07 +0100
Message-ID: <87v9rqm8y4.fsf@gnu.org>
References: <c2840c44eff9757d09a0429ceb7676b23cad322d.camel@zrythm.org>
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 (Alexandros Theodotou's message of "Sun, 10 Nov 2019 16:44:23 +0000")
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To: Alexandros Theodotou <alex@zrythm.org>
Cc: 38163@debbugs.gnu.org

Hi Alexandros,

Alexandros Theodotou <alex@zrythm.org> skribis:

> I have been developing and testing my GTK app (Zrythm) on many distros
> and Guix is the only case that the monitor's refresh rate is returned
> as 0.
>
> The API I am using is this:
> https://developer.gnome.org/gdk3/stable/GdkMonitor.html#gdk-monitor-get-r=
efresh-rate

Looking at GTK+, the =E2=80=98init_randr*=E2=80=99 functions in =E2=80=98gd=
kscreen-x11.c=E2=80=99 appear
to be those responsible for setting the =E2=80=98refresh_rate=E2=80=99 fiel=
d.

However, AFAICS, our =E2=80=98gtk+=E2=80=99 package does not depend on =E2=
=80=98libxrandr=E2=80=99, and
thus that functionality is simply compiled out (the function returns 0
unconditionally).

Could you try adding that dependency on =E2=80=98libxrandr=E2=80=99 in =E2=
=80=98gtk+=E2=80=99?

We won=E2=80=99t make this change in =E2=80=98master=E2=80=99 because it en=
tails too many
rebuilds, but it could go on the next branch for massive rebuilds.

Thanks for your report,
Ludo=E2=80=99.