Out of troublePosted by Magnus Glantz 2016-02-17 21:10:04
VirtualBox doesn't have support for the version of Xorg that F23 ships with. So, to fix screen resolution, on your F23 system, run:
# dnf --showduplicates --allowerasing --releasever=22 downgrade xorg-x11-server-Xorg
Then apply guest additions and reboot.
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