Created attachment 132342 [details] Blank screen, nothing shows up. MacOS, 10.12.5 (16F73) XQuartz 2.7.11 (xorg-server 1.18.4) On localhost, glxgears, glxinfo, xclock work fine. Then open iTerm, ssh -X -Y to my desktop which runs with Ubuntu Linux, xclock& works, [abbott@labcmc ~]$ glxinfo name of display: localhost:11.0 Error: couldn't find RGB GLX visual or fbconfig # fails [abbott@labcmc ~]$ glxgears Error: couldn't get an RGB, Double-buffered visual #fails gv & [xcb] Most likely this is a multi-threaded client and XInitThreads has not been called [xcb] Aborting, sorry about that. gview.exe: xcb_io.c:273: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. # gview.exe is another X11 application I am using. I have attached a pic about the bugs. Normally, there are atoms showing up in the window, but now, nothing.
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