Comment # 13 on bug 1085772 from Fabian Vogt

(In reply to Roger Whittaker from comment #12)
> That worked for me, but with one or two problems.
> 
>  - After logging in I see a grey screen with mouse cursor until I do a
> Ctrl-Alt-F2.
> 
>  - After logging in display resolutions are wrong (apparently switched as
> between the two monitors that I'm using.
> 
>  - After logging in, middle mouse paste doesn't work (it did before when
> logging in to plasma on Wayland from gdm, which is why I was doing this,
> because the same was not true with sddm)

Wayland does not support middle mouse paste (what GNOME does is a workaround,
not actually clipboard vs. cutbuffer).
This means you were actually running an X11 session.

> 
>  - The name change doesn't show up for me (is it cached somewhere else?)