are you trying to run GUI apps as root in a terminal with sudo?
that won’t work (it’s a security feature) you need to use kdesu or gnomesu or xdg-su -c
in the past you couldn’t run GUI apps as root at all but now I think if you login as root
you might be able to run GUI apps as root (I haven’t tested this as I avoid running GUI’s under root mostly because of the mess they create in /root and the possibility of borking my sistem)
or are you doing a remote login
afaik remote GUI logins are disabled by default (another security feature)
this might happen if your are trying to execute applications as a 2nd non-root user while being logged in with different credentials
if you have a two or more user setup and need to run applications as a user who didn’t start the X session you should add the users who you wish to allow extra privileges to the video group
everything looks fine before doing anything else I’d recommend creating a new user account log off your current user and login and try the fresh account
you can create a new account with yast or by doing
sudo useradd temp_user
on a side note you should remove the vlc repo as it can interfere with the packman repo as it has the same version of vlc but an incompatible version of ffmpeg note this is not the cause of your issues just a FYI
you didn’t say if you ran a recent update due to the fact TW is always changing it could be a new bug if you still have those issues with a clean account I’d say you have 2 choices left #1 wait for it to be fixed and do an update which should be soonish (it is the weekend) #2 if you’re using btrfs for root do a rollback to an earlier snapshot and don’t do updates until this is fixed
#3 if this is new ie you haven’t done any recent hardware or software changes and this issue persists with a clean account you should open a bug report over at opensuse’s bugzilla https://bugzilla.opensuse.org/
I’m experiencing a similar issue. I get a “No protocol specified” message (sometimes repeatedly) when launching X applications from a terminal window. But I don’t get any “Can’t open display” error, and the applications do seem to run fine. The “No protocol specified” messages are annoying, though. They started appearing recently on my Tumbleweed and Leap 15.0 systems.
Can you provide a link to your bug report?
This doesn’t seem to make sense—“XAUTHORITY” is a variable name, so changing it to “.Xauthority” should have caused a new error. Can you tell me exactly what line(s) in your profile you changed, including how they looked before and after the change?