-rw------- 1 root root 352K Apr 24 09:28 .ICEauthority

-rw------- 1 root root   58 Jun 23  2017 .Xauthority

sudo mount -o remount,rw / # to mount the disk as read/write

cd /home/your_username # again, use the correct your_username

sudo chown your_username:your_username .ICEauthority # again, use the correct your_username

sudo chown your_username:your_username .Xauthority # again, use the correct your_username

reboot