* doc/misc/tramp.texi (Bug Reports): Encourage use of "emacs -Q".

Author: albinus

doc/misc/tramp.texi

@@ -3799,7 +3799,11 @@ help the development team find the best solution and avoid unrelated
 detours.
 
 To exclude cache-related problems, flush all caches before running the
-test, @ref{Cleanup remote connections}.
+test, @ref{Cleanup remote connections}.  Alternatively, and often
+better for analysis, reproduce the problem in a clean Emacs session
+started with @command{emacs -Q}.  Then, @value{tramp} does not load
+the persistency file (@pxref{Connection caching}), and it does not use
+passwords from @file{auth-source.el} (@pxref{Password handling}).
 
 When including @value{tramp}'s messages in the bug report, increase
 the verbosity level to 6 (@pxref{Traces and Profiles, Traces}) in the