I am supporting the idea, but I think minimum stability/feature level needs to be achieved. I have not tried Wayland for few Plasma releases with Intel graphics, but the main issue I can see is nVidia hardware. Proprietary nVidia drivers do not support Wayland and don't plan at this moment. Noveau does not support re-clocking for last 2 generations of hardware already (and I'm not sure the state of wayland support), so it leaves out a lot of people.
 Overall I think it will generate a lot of feedback that will push forward the development, but I'm not sure if KDE is moving fast enough to provide good user experience. It's a tough and not obvious call in my opinion. If it is going to be the default, it needs to be well tested and limitations need to be well understood.

Yours truly, Alex

On Mon, Jan 8, 2018 at 2:50 PM, Jan Grulich <jgrulich@redhat.com> wrote:

I would like to discuss and propose that we as KDE SIG move forward and
attempt to use Wayland as default for our KDE Spin in Fedora 28. We will have
to switch soon or later anyway. With Plasma 5.12 and Qt 5.9+ the situation
with wayland should be way better and given that Plasma 5.12 is an LTS
release, then we have high chance that bugs we find are fixed within this
release cycle. If we find out that wayland is still more unusable than usable
and issues cannot be easily solved, then switching back is easy.
Fedora Workstation (Gnome) has switched long time ago, here [1] you can find
their proposal and even they had tons of problems at the beginning, but given
that people actually started using wayland (not just randomly testing it),
then I think it really helped to speed up the whole development process as
people were reporting issues for use cases which the devs couldn not think of
or able to test.

I'm willing of course to do all the paperwork around, propose a change, write
wiki page, contingency plan and so on and also attempt to help with fixing
wayland issues.

What do you think about this idea?

[1] - https://fedoraproject.org/wiki/Changes/WaylandByDefault

Jan Grulich,
Software Engineer, Desktop Team
Red Hat

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