master fbb703f60a: ; * etc/PROBLEMS: Update the touch-gestures section.

[Eli Zaretskii]

branch: master
commit fbb703f60aa9bbe3a0c60ee6e52d60d58126999f
Author: Eli Zaretskii <eliz@gnu.org>
Commit: Eli Zaretskii <eliz@gnu.org>

    ; * etc/PROBLEMS: Update the touch-gestures section.
---
 etc/PROBLEMS | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/etc/PROBLEMS b/etc/PROBLEMS
index 018efcf302..20b417f205 100644
--- a/etc/PROBLEMS
+++ b/etc/PROBLEMS
@@ -1768,7 +1768,15 @@ This happens on the proprietary X server ASTEC-X when 
the number of
 monitors is changed after the server has started.  A workaround is to
 restart the X server after the monitor configuration has been changed.
 
-*** Touchpad gestures don't work and emit warning messages.
+*** Touchpad gestures don't work and/or emit warning messages.
+
+Support for touch gestures in Emacs requires version 21.1.0 or later
+of the X.Org server, and it requires that Emacs be built with the
+xf86-input-libinput library that is new enough
+
+Type 'M-: (x-server-input-extension-version) RET'; if that doesn't
+return '(2 4)' (version 2.4) or later, your version of the X server
+and libraries are too old and need to be upgraded.
 
 When pinching or swiping on your touchpad, you might see a warning
 message that looks like: