On my Leap 42.3 system, when I connect to a remote Tumbleweed system using ssh
-X or X2Go and attempt to run certain OpenGL or KDE programs, the following
error message is printed to the console:

libGL error: failed to load driver: swrast

The program may or may not work normally.  glxinfo refuses to run, crashing
with the same error message described in Bug 1032509.  Abnormal behaviour in
KDE applications seems limited to not painting certain icons in toolbars and
dialogs.  For example, in KWrite and Okular, the toolbar icons are all replaced
with plain text, and most (but not all) of the icons in their configuration
dialogs are missing.

I tried adding the following to /etc/X11/xorg.conf.d/90-serverflags.conf on my
local machine:

Section "ServerFlags"
    Option "AllowIndirectGLX" "on"
    Option "IndirectGLX" "on"
EndSection

This allows glxinfo to run, but I still get the error message about swrast, and
there is no change to the misbehaviour of KDE applications.

If it makes any difference, I am using the nvidia driver with a GeForce 7300
SE.