Composition failing for dual monitor setup after upgrading Fedora

Olivier Fourdan fourdan at
Mon May 13 13:02:01 UTC 2019

Hi Iván,

Wayland is a protocol between clients and the compositor, and this mailing
list is more about the bugs in either libwayland (a small IPC library) or
the Wayland protocols themselves, so it's unlikely that compositor specific
issues can be addressed in this list.

What you describe here looks like a bug in the Wayland compositor
specifically, which in the case of GNOME is mutter so you should report
that particular issue with GNOME upstream against mutter in instead.


On Mon, 13 May 2019 at 13:26, Iván Zaera Avellón <izaera at> wrote:

> Hi community:
> I'm new to the list and have come here because someone referenced me the
> list from the Ask Fedora forum.
> The reason I'm asking is because I have recently updated to Fedora 30 and
> the wayland session is intermittently broken for my setup while the xorg
> one works seamlessly.
> I thought maybe someone in this list could give me some hints on how to
> help diagnosing the problem and, in case it is a bug, report it or help to
> fix it.
> This is the original question in the Fedora forum ->
> but I'll write a summary here too:
> I have just updated to F30 from F29 and my gnome wayland session does not
> work any more when a second monitor is attached to my HDMI port. The
> problem is that the laptop monitor shows garbage and only the attached one
> works fine.
> If I unplug the monitor it usually recovers from the condition. If I use
> xorg everything goes fine.
> I’m using a MacBook Pro with an “Intel Corporation Crystal Well Integrated
> Graphics Controller (rev 08)” VGA card. The laptop's monitor is a Retina
> and the external monitor is not, though the external one is physically
> bigger.
> Also, playing with resolutions and scale factors, the problem seems to
> disappear for some configurations but unfortunately they are not usable
> configurations because displays are too mismatched in sizes (from that of
> the real world) which makes window sizes unusable (because of being too big
> or too small).
> Any ideas or hints on how to begin the investigation?
> Thanks ☺.
> _______________________________________________
> wayland-devel mailing list
> wayland-devel at
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