WARNING **: Could not open X display No protocol specified in almost all apps - f27
Hi all.
I bought a Precision 5520 and installed Fedora 27 on it. I had a problem with the graphic card (Intel Graphic card 630). Fedora wasn't recognizing it... it was working but the performance was REALLY slow.
After lots of research, I finally found the answer... go to the grub configuration and erase the nomodeset and voiala ! Fedora recognize my gcard and my life started to run much better...
Althought, for my bad luck... lots of apps stoped to work ! When I run then on shell, I have the error:
* (vmware-modconfig:20991): WARNING *: Could not open X display No protocol specified
(vmware-modconfig:20991): Gtk-WARNING **: cannot open display: :0
VMware example !
Please, anyone has any clues what is going on? How to solve it? I am available to give more information if it is necessary.
Thanks.
Wayland does not allow you to run graphical applications as root user. You may want to run a XOrg session or use other workarounds. The topic has been covered many times in this forum. Let us know if you can't find the information you need.