I just upgraded FC25 to FC26 on three of my machines. The machine with an Intel HD graphics 4400 (i3-4130) is the one with the problem. xclip, which I have several custom programs written around, no longer works. # xclip -selection primary No protocol specified Error: Can't open display: :0.0 # xclip -selection clipboard No protocol specified Error: Can't open display: :0.0 # cat /etc/redhat-release Fedora release 26 (Twenty Six) # uname -a Linux Microknoppix.netgear.com 4.11.9-300.fc26.x86_64 #1 SMP Wed Jul 5 16:21:56 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux Xfce 4.12
Update: a `dnf upgrade` and a reboot fixed this issue.