System unusable without nomodeset

There’s a GitHub issue that describes graphics artifacts where the image is being redrawn. The problem there seems to be with the Intel GPU, but it may still be worth a try (run as root and reboot):

[user@dom0 ~]$ sudo -i
[root@dom0 ~]# cat << EOF > /etc/X11/xorg.conf.d/99-intel.conf
Section "OutputClass"
Identifier "intel"
MatchDriver "i915"
Driver "intel"
Option "AccelMethod" "sna"
Option "TearFree" "true"
Option "DRI" "3"
EndSection
EOF
[root@dom0 ~]# exit
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