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--- faq:nix [2020/03/22 00:59] – Add SDL errors FAQ digital man
+++ faq:nix [2020/03/22 14:45] – [SDL errors] mention the xhost solution digital man
@@ Line 194: / Line 194: @@
 **Question:**\\
 How do I work around SDL_main errors (e.g. ''No protocol specified'' followed by a ''segmentation fault'') that prevent Synchronet applications (e.g. [[util:SCFG]], [[util:EchoCFG]], [[monitor:umonitor]], etc.) built with SDL 1.2 from running?
+<code>
+$ /sbbs/exec/scfg
+No protocol specified
+No protocol specified
+No protocol specified
+Segmentation fault (core dumped)
+</code>
 **Answer:**\\
-Clean re-build all of Synchronet without SDL support (include ''WITHOUT_SDL=1'' on the ''make'' command-lines) or set the ''SDL_VIDEODRIVER'' environment variable to the value of ''dummy'' (e.g. ''EXPORT SDL_VIDEODRIVER=dummy'') before executing the programs.
+Double check that you can run X applications (e.g. ''xterm'', ''xeyes'') and if you cannot, you may need to grant X access to other user accounts with a command like:
+  xhost +SI:localuser:<username>
+executed before switching to another user account (e.g. with ''su'' or ''sudo'').
+Work-arounds:
+  - Clean re-build all of Synchronet without SDL support (include ''WITHOUT_SDL=1'' on the ''make'' command-lines or in your ''localdefs.mk'' file)
+  - Set the ''SDL_VIDEODRIVER'' environment variable to the value of ''dummy'' (e.g. ''EXPORT SDL_VIDEODRIVER=dummy'') before executing the program
 ===== See Also =====

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