diff -Naur qt-everywhere-src-5.15.11.orig/qtbase/src/platformsupport/input/xkbcommon/qxkbcommon.cpp qt-everywhere-src-5.15.11/qtbase/src/platformsupport/input/xkbcommon/qxkbcommon.cpp
--- qt-everywhere-src-5.15.11.orig/qtbase/src/platformsupport/input/xkbcommon/qxkbcommon.cpp	2023-10-12 17:55:18.450758031 +0200
+++ qt-everywhere-src-5.15.11/qtbase/src/platformsupport/input/xkbcommon/qxkbcommon.cpp	2023-10-12 17:56:18.261570820 +0200
@@ -273,11 +273,10 @@
         Xkb2Qt<XKB_KEY_dead_small_schwa,        Qt::Key_Dead_Small_Schwa>,
         Xkb2Qt<XKB_KEY_dead_capital_schwa,      Qt::Key_Dead_Capital_Schwa>,
         Xkb2Qt<XKB_KEY_dead_greek,              Qt::Key_Dead_Greek>,
-        Xkb2Qt<XKB_KEY_dead_lowline,            Qt::Key_Dead_Lowline>,
-        Xkb2Qt<XKB_KEY_dead_aboveverticalline,  Qt::Key_Dead_Aboveverticalline>,
-        Xkb2Qt<XKB_KEY_dead_belowverticalline,  Qt::Key_Dead_Belowverticalline>,
-        Xkb2Qt<XKB_KEY_dead_longsolidusoverlay, Qt::Key_Dead_Longsolidusoverlay>,
-
+        Xkb2Qt<0xfe90,                          Qt::Key_Dead_Lowline>,
+        Xkb2Qt<0xfe91,                          Qt::Key_Dead_Aboveverticalline>,
+        Xkb2Qt<0xfe92,                          Qt::Key_Dead_Belowverticalline>,
+        Xkb2Qt<0xfe93,                          Qt::Key_Dead_Longsolidusoverlay>,
         // Special keys from X.org - This include multimedia keys,
         // wireless/bluetooth/uwb keys, special launcher keys, etc.
         Xkb2Qt<XKB_KEY_XF86Back,                Qt::Key_Back>,