Mention font-backend related crashes in PROBLEMS

* etc/PROBLEMS: Mention the crash in the Cairo build when
.emacs.desktop messes with font-backend.  (Bug#36835)

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 785e6e18afa06dce310813aef8bafc41ac30ac14..2d56cc761aefbebff6275e24ce495f9eea1a029e 100644 (file)
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -45,6 +45,13 @@ following command may do the trick.  See xrdb(1) for more information.
 
   $ xrdb -merge ~/.Xresources
 
+** Emacs compiled with Cairo crashes when restoring session from desktop file.
+
+This can happen if the '.emacs.desktop' file contains setting for
+'font-backend' frame parameter.  A workaround is to delete the
+offending '.emacs.desktop' file, or edit it to remove the setting of
+'font-backend'.
+
 ** Emacs aborts while starting up, only when run without X.
 
 This problem often results from compiling Emacs with GCC when GCC was