[R-pkg-devel] No protocol specified

[Ivan Krylov]

On Fri, 23 Aug 2019 09:18:07 +0200
"Dr. rer. nat. Michael Thrun" <mthrun using Mathematik.Uni-Marburg.de> wrote:

>> No protocol specified
> 
> Can anyone translate this note to me in a way that I know what the
> issue is?

I might be mistaken, but "No protocol specified" is an error frequently
returned by an X server [*] when a connection to the display can be
established, but the client fails to authenticate and is denied access.

If my diagnosis is true, the error message indicates a setup problem on
the machine running R CMD check, not a package problem. At the
very least, this error message does not seem to appear anywhere in the R
source code.

-- 
Best regards,
Ivan

[*] https://duckduckgo.com/html/?q=X%20%22No%20protocol%20specified%22