3) To use the Tablet you don't need the actual hardware tablet. It is used
for sending clicks and mouse movement without the need for your mouse to be
locked to the virtual machine (no need to press Ctrl+Alt to release the
mouse).
4) Check your settings for Display and Video. Display is set to SPICE by
default, and if you use SPICE you should use QXL Video, which is not set by
default. You can use VNC instead of SPICE, but you won't be able to hear
sound from the VM. You can use VNC with Vga. I don't know what will work for
you. Experiment.
4) A tip: If you use XFS partition on the host for where your VM images are,
you should set Cache mode for hard disk (in the settings for the VM) to None.
Virtual hard disk performance is for some reason very bad when XFS (on the
host) is used with caching.
