Wireshark from oS 15.4 repo doesn’t look like it did in previous version of openSuse: the main window doesn’t appear, only a list of earlier pcap files. The Interfaces are not listed under the “Input” tab of Capture/Options. Saw a hint that reinstalling might help–didn’t. Any suggestions?
Have installed/configured eth0 and wireless interfaces on the HP omen using Wicked. Switching to NetworkManager I can see all three interfaces and they connect.
Do you start it as root?
Probably not as root; started from app menu. Tried as root from terminal:
sudo wireshark
[sudo] password for root:
** (wireshark:16501) 15:15:35.616269 [GUI CRITICAL] – This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.
sudo is not su:
stephan@linux64:~> sudo wireshark
[sudo] Passwort für root:
** (wireshark:1079) 21:23:18.310652 [GUI CRITICAL] -- This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.
with su -l:
stephan@linux64:~> su -l
Passwort:
linux64:~ # wireshark
** (wireshark:1185) 21:24:22.394378 [GUI WARNING] -- QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
libGL error: MESA-LOADER: failed to open nouveau: /usr/lib64/dri/nouveau_dri.so: cannot open shared object file: No such file or directory (search paths /usr/lib64/dri, suffix _dri)
libGL error: failed to load driver: nouveau
It’s staring and I see the Ethernet or Wireless…
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That was the solution. I never realized that sudo was less than su.
Thank you.
Using Wireshark now 
sudo in openSUSE is not as configured as in Debisn/Ubuntu.
Mostly it works, but rarely sometimes not.
So I do not use it, I use su or su -l.