Re: GNOME Shell/Wayland, VirtualBox and absolute input

First answer to self.  Sorry for the double initial message!  I should
know not to write to a mailing list on an unstable Internet connection...

06.12.2016 17:31, Michael Thayer wrote:
I am looking for a solution to the following problem: when I run
Fedora 25 with GNOME Shell/Wayland and multiple monitors under
VirtualBox and install Guest Additions absolute input mapping does
not work correctly: the first screen as seen from the host is mapped
to the entire guest virtual desktop, and that only when the first
screen is in the top left corner of the virtual desktop.
I will try for a start using suggested_x and _y from inside the driver to encourage the compositor to use a layout we are aware of. Not ideal, but hopefully it will work in more cases than we have now.

Another issue I am looking at is that GNOME Shell does not seem to
use drm dirtyfb information to tell the driver about updates.
However virtio-gpu seems to get the information, so presumably there
is something I can do about this.  Any idea about what I should be
doing differently?  And (small complaint) the fact that GNOME Shell
does not do a soft mouse cursor makes debugging pointer issues
somewhat painful...
Running gnome-shell under Qemu/virtio-gpu 2D in gdb you seem to be doing page flips even without acceleration. I suspect that might have rather bad performance, but it is probably not your highest priority use case.


Michael Thayer | VirtualBox engineer
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