XScreenSaver 6.0 uses this, so all GL hacks are broken on that driver.
Simply switching to eglCreateWindowSurface works and there’re no errors around the bogus function call.
There’s no error w/ the MESA implementation. 46xxx status unknown.
I don’t expect the XSS author to work around this (at least not long term) and also the bug is, by all evidence - not sure about client spec violations but BAD_DISPLAY is weird, in the EGL library and should be fixed there for all client code.
Archlinux bug: FS#71123 : [xscreensaver] GL hacks broken on (older?) nvidia drivers
Forum thread: xscreensaver coredump for all screensavers / Newbie Corner / Arch Linux Forums
XSS bug report and communication by PM, so no link - sorry.