diff --git a/autotests/CMakeLists.txt b/autotests/CMakeLists.txt
--- a/autotests/CMakeLists.txt
+++ b/autotests/CMakeLists.txt
@@ -134,6 +134,7 @@
 target_link_libraries(testBuiltInEffectLoader
     Qt5::Concurrent
     Qt5::Test
+    Qt5::X11Extras
     KF5::Package
     kwineffects
     kwin4_effect_builtins
@@ -160,6 +161,7 @@
     Qt5::Concurrent
     Qt5::Script
     Qt5::Test
+    Qt5::X11Extras
     KF5::ConfigGui
     KF5::GlobalAccel
     KF5::I18n
@@ -184,6 +186,7 @@
 target_link_libraries(testPluginEffectLoader
     Qt5::Concurrent
     Qt5::Test
+    Qt5::X11Extras
     KF5::Package
     kwineffects
     kwin4_effect_builtins
diff --git a/autotests/mock_effectshandler.h b/autotests/mock_effectshandler.h
--- a/autotests/mock_effectshandler.h
+++ b/autotests/mock_effectshandler.h
@@ -21,6 +21,8 @@
 #define MOCK_EFFECTS_HANDLER_H
 
 #include <kwineffects.h>
+#include <QX11Info>
+
 class MockEffectsHandler : public KWin::EffectsHandler
 {
     Q_OBJECT
diff --git a/autotests/test_client_machine.cpp b/autotests/test_client_machine.cpp
--- a/autotests/test_client_machine.cpp
+++ b/autotests/test_client_machine.cpp
@@ -24,6 +24,7 @@
 // Qt
 #include <QApplication>
 #include <QtTest/QtTest>
+#include <QX11Info>
 // xcb
 #include <xcb/xcb.h>
 // system
diff --git a/autotests/test_screen_edges.cpp b/autotests/test_screen_edges.cpp
--- a/autotests/test_screen_edges.cpp
+++ b/autotests/test_screen_edges.cpp
@@ -35,6 +35,7 @@
 #include <KConfigGroup>
 // Qt
 #include <QtTest/QtTest>
+#include <QX11Info>
 // xcb
 #include <xcb/xcb.h>
 Q_DECLARE_METATYPE(KWin::ElectricBorder)
diff --git a/autotests/test_xcb_size_hints.cpp b/autotests/test_xcb_size_hints.cpp
--- a/autotests/test_xcb_size_hints.cpp
+++ b/autotests/test_xcb_size_hints.cpp
@@ -23,6 +23,7 @@
 // Qt
 #include <QApplication>
 #include <QtTest/QtTest>
+#include <QX11Info>
 #include <netwm.h>
 // xcb
 #include <xcb/xcb.h>
diff --git a/autotests/test_xcb_window.cpp b/autotests/test_xcb_window.cpp
--- a/autotests/test_xcb_window.cpp
+++ b/autotests/test_xcb_window.cpp
@@ -23,6 +23,7 @@
 // Qt
 #include <QApplication>
 #include <QtTest/QtTest>
+#include <QX11Info>
 // xcb
 #include <xcb/xcb.h>
 
diff --git a/autotests/test_xcb_wrapper.cpp b/autotests/test_xcb_wrapper.cpp
--- a/autotests/test_xcb_wrapper.cpp
+++ b/autotests/test_xcb_wrapper.cpp
@@ -23,6 +23,7 @@
 // Qt
 #include <QApplication>
 #include <QtTest/QtTest>
+#include <QX11Info>
 #include <netwm.h>
 // xcb
 #include <xcb/xcb.h>
diff --git a/kcmkwin/kwinrules/main.cpp b/kcmkwin/kwinrules/main.cpp
--- a/kcmkwin/kwinrules/main.cpp
+++ b/kcmkwin/kwinrules/main.cpp
@@ -22,6 +22,7 @@
 #include <KLocalizedString>
 #include <kwindowsystem.h>
 #include <QtDBus/QtDBus>
+#include <QX11Info>
 #include <X11/Xlib.h>
 #include <fixx11h.h>
 
diff --git a/libkwineffects/CMakeLists.txt b/libkwineffects/CMakeLists.txt
--- a/libkwineffects/CMakeLists.txt
+++ b/libkwineffects/CMakeLists.txt
@@ -45,7 +45,6 @@
 set(kwineffects_QT_LIBS
     Qt5::DBus
     Qt5::Widgets
-    Qt5::X11Extras
 )
 
 set(kwineffects_KDE_LIBS
@@ -91,7 +90,7 @@
     include_directories(${glinclude})
     add_library(${name} SHARED ${kwin_GLUTILSLIB_SRCS})
     generate_export_header(${name} BASE_NAME kwinglutils EXPORT_FILE_NAME kwinglutils_export.h)
-    target_link_libraries(${name} PUBLIC Qt5::DBus Qt5::X11Extras XCB::XCB KF5::CoreAddons KF5::WindowSystem)
+    target_link_libraries(${name} PUBLIC Qt5::DBus XCB::XCB KF5::CoreAddons KF5::WindowSystem)
     set_target_properties(${name} PROPERTIES
         VERSION ${KWINEFFECTS_VERSION_STRING}
         SOVERSION ${KWINEFFECTS_SOVERSION}
diff --git a/libkwineffects/kwinglobals.h b/libkwineffects/kwinglobals.h
--- a/libkwineffects/kwinglobals.h
+++ b/libkwineffects/kwinglobals.h
@@ -25,7 +25,6 @@
 #include <QImage>
 #include <QPoint>
 #include <QVariant>
-#include <QtX11Extras/QX11Info>
 #include <QCoreApplication>
 #include <QVariant>
 
@@ -131,16 +130,6 @@
 };
 
 inline
-KWIN_EXPORT Display* display()
-{
-    static Display *s_display = nullptr;
-    if (!s_display && QX11Info::isPlatformX11()) {
-        s_display = QX11Info::display();
-    }
-    return s_display;
-}
-
-inline
 KWIN_EXPORT xcb_connection_t *connection()
 {
     static xcb_connection_t *s_con = nullptr;
diff --git a/main_x11.cpp b/main_x11.cpp
--- a/main_x11.cpp
+++ b/main_x11.cpp
@@ -43,6 +43,7 @@
 #include <QLabel>
 #include <QPushButton>
 #include <QVBoxLayout>
+#include <QX11Info>
 
 // system
 #ifdef HAVE_UNISTD_H
@@ -439,7 +440,7 @@
                 argv[0], qPrintable(a.platformName()));
         exit(1);
     }
-    if (!KWin::display()) {
+    if (!QX11Info::display()) {
         fprintf(stderr, "%s: FATAL ERROR KWin requires Xlib support in the xcb plugin. Do not configure Qt with -no-xcb-xlib\n",
                 argv[0]);
         exit(1);
diff --git a/plugins/platforms/x11/common/eglonxbackend.h b/plugins/platforms/x11/common/eglonxbackend.h
--- a/plugins/platforms/x11/common/eglonxbackend.h
+++ b/plugins/platforms/x11/common/eglonxbackend.h
@@ -31,7 +31,7 @@
 class KWIN_EXPORT EglOnXBackend : public AbstractEglBackend
 {
 public:
-    EglOnXBackend();
+    EglOnXBackend(Display *display);
     explicit EglOnXBackend(xcb_connection_t *connection, Display *display, xcb_window_t rootWindow, int screenNumber, xcb_window_t renderingWindow);
     virtual ~EglOnXBackend();
     virtual void screenGeometryChanged(const QSize &size);
diff --git a/plugins/platforms/x11/common/eglonxbackend.cpp b/plugins/platforms/x11/common/eglonxbackend.cpp
--- a/plugins/platforms/x11/common/eglonxbackend.cpp
+++ b/plugins/platforms/x11/common/eglonxbackend.cpp
@@ -38,14 +38,14 @@
 namespace KWin
 {
 
-EglOnXBackend::EglOnXBackend()
+EglOnXBackend::EglOnXBackend(Display *display)
     : AbstractEglBackend()
     , m_overlayWindow(new OverlayWindow())
     , surfaceHasSubPost(0)
     , m_bufferAge(0)
     , m_usesOverlayWindow(true)
     , m_connection(connection())
-    , m_x11Display(display())
+    , m_x11Display(display)
     , m_rootWindow(rootWindow())
     , m_x11ScreenNumber(kwinApp()->x11ScreenNumber())
 {
diff --git a/plugins/platforms/x11/standalone/glxbackend.h b/plugins/platforms/x11/standalone/glxbackend.h
--- a/plugins/platforms/x11/standalone/glxbackend.h
+++ b/plugins/platforms/x11/standalone/glxbackend.h
@@ -65,7 +65,7 @@
 class GlxBackend : public OpenGLBackend
 {
 public:
-    GlxBackend();
+    GlxBackend(Display *display);
     virtual ~GlxBackend();
     virtual void screenGeometryChanged(const QSize &size);
     virtual SceneOpenGL::TexturePrivate *createBackendTexture(SceneOpenGL::Texture *texture);
@@ -89,6 +89,9 @@
     bool initFbConfig();
     void initVisualDepthHashTable();
     void setSwapInterval(int interval);
+    Display *display() const {
+        return m_x11Display;
+    }
 
     int visualDepth(xcb_visualid_t visual) const;
     FBConfigInfo *infoForVisual(xcb_visualid_t visual);
@@ -112,6 +115,7 @@
     bool m_haveINTELSwapEvent = false;
     bool haveSwapInterval = false;
     bool haveWaitSync = false;
+    Display *m_x11Display;
     friend class GlxTexture;
 };
 
@@ -130,6 +134,9 @@
     friend class GlxBackend;
     GlxTexture(SceneOpenGL::Texture *texture, GlxBackend *backend);
     bool loadTexture(xcb_pixmap_t pix, const QSize &size, xcb_visualid_t visual);
+    Display *display() const {
+        return m_backend->m_x11Display;
+    }
     SceneOpenGL::Texture *q;
     GlxBackend *m_backend;
     GLXPixmap m_glxpixmap; // the glx pixmap the texture is bound to
diff --git a/plugins/platforms/x11/standalone/glxbackend.cpp b/plugins/platforms/x11/standalone/glxbackend.cpp
--- a/plugins/platforms/x11/standalone/glxbackend.cpp
+++ b/plugins/platforms/x11/standalone/glxbackend.cpp
@@ -37,6 +37,7 @@
 // Qt
 #include <QDebug>
 #include <QOpenGLContext>
+#include <QX11Info>
 // system
 #include <unistd.h>
 
@@ -105,15 +106,16 @@
 
 
 
-GlxBackend::GlxBackend()
+GlxBackend::GlxBackend(Display *display)
     : OpenGLBackend()
     , m_overlayWindow(new OverlayWindow())
     , window(None)
     , fbconfig(NULL)
     , glxWindow(None)
     , ctx(nullptr)
     , m_bufferAge(0)
     , haveSwapInterval(false)
+    , m_x11Display(display)
 {
 }
 
diff --git a/plugins/platforms/x11/standalone/x11_platform.h b/plugins/platforms/x11/standalone/x11_platform.h
--- a/plugins/platforms/x11/standalone/x11_platform.h
+++ b/plugins/platforms/x11/standalone/x11_platform.h
@@ -70,6 +70,7 @@
     XInputIntegration *m_xinputIntegration = nullptr;
     QThread *m_openGLFreezeProtectionThread = nullptr;
     QTimer *m_openGLFreezeProtection = nullptr;
+    Display *m_x11Display;
 
 };
 
diff --git a/plugins/platforms/x11/standalone/x11_platform.cpp b/plugins/platforms/x11/standalone/x11_platform.cpp
--- a/plugins/platforms/x11/standalone/x11_platform.cpp
+++ b/plugins/platforms/x11/standalone/x11_platform.cpp
@@ -46,10 +46,11 @@
 
 X11StandalonePlatform::X11StandalonePlatform(QObject *parent)
     : Platform(parent)
+    , m_x11Display(QX11Info::display())
 {
 #if HAVE_X11_XINPUT
     if (!qEnvironmentVariableIsSet("KWIN_NO_XI2")) {
-        m_xinputIntegration = new XInputIntegration(this);
+        m_xinputIntegration = new XInputIntegration(m_x11Display, this);
         m_xinputIntegration->init();
         if (!m_xinputIntegration->hasXinput()) {
             delete m_xinputIntegration;
@@ -84,14 +85,14 @@
 #if HAVE_EPOXY_GLX
     case GlxPlatformInterface:
         if (hasGlx()) {
-            return new GlxBackend();
+            return new GlxBackend(m_x11Display);
         } else {
             qCWarning(KWIN_X11STANDALONE) << "Glx not available, trying EGL instead.";
             // no break, needs fall-through
         }
 #endif
     case EglPlatformInterface:
-        return new EglOnXBackend();
+        return new EglOnXBackend(m_x11Display);
     default:
         // no backend available
         return nullptr;
diff --git a/plugins/platforms/x11/standalone/xinputintegration.h b/plugins/platforms/x11/standalone/xinputintegration.h
--- a/plugins/platforms/x11/standalone/xinputintegration.h
+++ b/plugins/platforms/x11/standalone/xinputintegration.h
@@ -23,6 +23,7 @@
 #include <QObject>
 #include <QPointer>
 #include <QScopedPointer>
+typedef struct _XDisplay Display;
 
 namespace KWin
 {
@@ -36,7 +37,7 @@
 {
     Q_OBJECT
 public:
-    explicit XInputIntegration(QObject *parent);
+    explicit XInputIntegration(Display *display, QObject *parent);
     virtual ~XInputIntegration();
 
     void init();
@@ -49,14 +50,18 @@
     void setXkb(Xkb *xkb);
 
 private:
+    Display *display() const {
+        return m_x11Display;
+    }
 
     bool m_hasXInput = false;
     int m_xiOpcode = 0;
     int m_majorVersion = 0;
     int m_minorVersion = 0;
     QPointer<X11Cursor> m_x11Cursor;
     // TODO: QPointer
     Xkb *m_xkb = nullptr;
+    Display *m_x11Display;
 
     QScopedPointer<XInputEventFilter> m_xiEventFilter;
     QScopedPointer<XKeyPressReleaseEventFilter> m_keyPressFilter;
diff --git a/plugins/platforms/x11/standalone/xinputintegration.cpp b/plugins/platforms/x11/standalone/xinputintegration.cpp
--- a/plugins/platforms/x11/standalone/xinputintegration.cpp
+++ b/plugins/platforms/x11/standalone/xinputintegration.cpp
@@ -162,8 +162,9 @@
     Xkb *m_xkb = nullptr;
 };
 
-XInputIntegration::XInputIntegration(QObject *parent)
+XInputIntegration::XInputIntegration(Display *display, QObject *parent)
     : QObject(parent)
+    , m_x11Display(display)
 {
 }
 
diff --git a/tests/screenedgeshowtest.cpp b/tests/screenedgeshowtest.cpp
--- a/tests/screenedgeshowtest.cpp
+++ b/tests/screenedgeshowtest.cpp
@@ -28,6 +28,7 @@
 #include <QWindow>
 #include <QWidget>
 #include <QCheckBox>
+#include <QX11Info>
 #include "../xcbutils.h"
 
 #include <KWindowSystem>
diff --git a/utils.cpp b/utils.cpp
--- a/utils.cpp
+++ b/utils.cpp
@@ -35,6 +35,7 @@
 #include <QApplication>
 #include <QDebug>
 
+#include <QX11Info>
 #include <X11/Xlib.h>
 
 #include <stdio.h>