diff --git a/code/CMakeLists.txt b/code/CMakeLists.txt
index 7b8d1b670..35fa80538 100644
--- a/code/CMakeLists.txt
+++ b/code/CMakeLists.txt
@@ -220,41 +220,15 @@ IF(WITH_QT5)
     FIND_PACKAGE(Qt5LinguistTools)
     FIND_PACKAGE(Qt5Network)
 
-    SET(QT_LIBRARIES Qt5::Widgets Qt5::Core Qt5::Gui Qt5::Network Qt5::OpenGL Qt5::Xml)
-
     IF(QT_STATIC)
       ADD_DEFINITIONS(-DQT_STATICPLUGIN)
 
-      # Core
-      IF(APPLE)
-        FIND_LIBRARY(PCRE_LIBRARY pcre16 pcre)
-
-        FIND_LIBRARY(FOUNDATION_FRAMEWORK Foundation)
-        FIND_LIBRARY(CARBON_FRAMEWORK Carbon)
-        FIND_LIBRARY(SECURITY_FRAMEWORK Security)
-
-        SET(QT_LIBRARIES ${QT_LIBRARIES}
-          ${PCRE_LIBRARY}
-          ${FOUNDATION_FRAMEWORK}
-          ${CARBON_FRAMEWORK}
-          ${SECURITY_FRAMEWORK})
-      ENDIF()
-
-      # Network
-      FIND_PACKAGE(OpenSSL REQUIRED)
-      SET(QT_LIBRARIES ${QT_LIBRARIES} ${OPENSSL_LIBRARIES} ${ZLIB_LIBRARIES})
-
-      IF(WIN32)
-        SET(QT_LIBRARIES ${QT_LIBRARIES}
-          ${WINSDK_LIBRARY_DIR}/Crypt32.lib
-          ${WINSDK_LIBRARY_DIR}/WS2_32.Lib)
-      ENDIF()
-
-      SET(QT_LIBRARIES ${QT_LIBRARIES} ${PNG_LIBRARIES} ${JPEG_LIBRARY})
+      SET(QT_LIBRARIES Qt5::Widgets)
 
       # Gui
+      SET(QT_LIBRARIES ${QT_LIBRARIES} Qt5::Gui Qt5::OpenGL)
+
       ADD_QT_LIBRARY(PrintSupport)
-      ADD_QT_LIBRARY(PlatformSupport)
 
       IF(WIN32)
         SET(QT_LIBRARIES ${QT_LIBRARIES}
@@ -284,17 +258,21 @@ IF(WITH_QT5)
         ADD_QT_PLUGIN(printsupport cocoaprintersupport)
         ADD_QT_PLUGIN(platforms qcocoa)
       ELSE()
-        FIND_LIBRARY(OPENGL_LIBRARY GL)
+        ADD_QT_PLUGIN(platforms qxcb)
+        ADD_QT_PLUGIN(xcbglintegrations qxcb-glx-integration)
 
-        SET(QT_LIBRARIES ${QT_LIBRARIES} ${OPENGL_LIBRARY})
+        ADD_QT_LIBRARY(XcbQpa)
+        ADD_QT_LIBRARY(PlatformSupport)
+        SET(QT_LIBRARIES ${QT_LIBRARIES} -lX11-xcb -lXi -lSM -lICE -lxcb)
+        SET(QT_LIBRARIES ${QT_LIBRARIES} "${QT_LIBRARY_DIR}/libxcb-static.a")
+        SET(QT_LIBRARIES ${QT_LIBRARIES} -lfontconfig)
+        ADD_QT_LIBRARY(DBus)
       ENDIF()
 
       ADD_QT_PLUGIN(imageformats qgif)
       ADD_QT_PLUGIN(imageformats qicns)
       ADD_QT_PLUGIN(imageformats qico)
       ADD_QT_PLUGIN(imageformats qjpeg)
-      ADD_QT_PLUGIN(imageformats qmng)
-      ADD_QT_PLUGIN(imageformats qwebp)
 
       # harfbuzz is needed since Qt 5.3
       IF(UNIX)
@@ -316,6 +294,25 @@ IF(WITH_QT5)
         SET(QT_LIBRARIES ${QT_LIBRARIES} ${FREETYPE_LIB})
       ENDIF()
 
+      ADD_QT_PLUGIN(accessible qtaccessiblewidgets)
+
+      SET(QT_LIBRARIES ${QT_LIBRARIES} ${PNG_LIBRARIES} ${JPEG_LIBRARY})
+
+      # Network
+      SET(QT_LIBRARIES ${QT_LIBRARIES} Qt5::Network Qt5::Xml)
+
+      FIND_PACKAGE(OpenSSL REQUIRED)
+      SET(QT_LIBRARIES ${QT_LIBRARIES} ${OPENSSL_LIBRARIES} ${ZLIB_LIBRARIES})
+
+      IF(WIN32)
+        SET(QT_LIBRARIES ${QT_LIBRARIES}
+          ${WINSDK_LIBRARY_DIR}/Crypt32.lib
+          ${WINSDK_LIBRARY_DIR}/WS2_32.Lib)
+      ENDIF()
+
+      # Core
+      SET(QT_LIBRARIES ${QT_LIBRARIES} Qt5::Core)
+
       # pcre is needed since Qt 5.5
       IF(UNIX)
         SET(PCRE_LIB "${QT_LIBRARY_DIR}/libqtpcre.a")
@@ -326,7 +323,23 @@ IF(WITH_QT5)
         SET(QT_LIBRARIES ${QT_LIBRARIES} ${PCRE_LIB})
       ENDIF()
 
-      ADD_QT_PLUGIN(accessible qtaccessiblewidgets)
+      IF(APPLE)
+        FIND_LIBRARY(PCRE_LIBRARY pcre16 pcre)
+
+        FIND_LIBRARY(FOUNDATION_FRAMEWORK Foundation)
+        FIND_LIBRARY(CARBON_FRAMEWORK Carbon)
+        FIND_LIBRARY(SECURITY_FRAMEWORK Security)
+
+        SET(QT_LIBRARIES ${QT_LIBRARIES}
+          ${PCRE_LIBRARY}
+          ${FOUNDATION_FRAMEWORK}
+          ${CARBON_FRAMEWORK}
+          ${SECURITY_FRAMEWORK})
+      ELSEIF(UNIX)
+        SET(QT_LIBRARIES ${QT_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT} -ldl)
+      ENDIF()
+    ELSE()
+      SET(QT_LIBRARIES Qt5::Widgets Qt5::Network Qt5::Xml Qt5::Gui Qt5::OpenGL Qt5::Core)
     ENDIF()
   ELSE()
     MESSAGE(WARNING "Unable to find Qt 5")
diff --git a/code/CMakeModules/PCHSupport.cmake b/code/CMakeModules/PCHSupport.cmake
index dafe72a5a..fa36fd008 100644
--- a/code/CMakeModules/PCHSupport.cmake
+++ b/code/CMakeModules/PCHSupport.cmake
@@ -145,19 +145,22 @@ MACRO(PCH_SET_COMPILE_FLAGS _target)
     ENDFOREACH()
   ENDIF()
 
-  # Hack to define missing QT_NO_DEBUG with Qt 5.2
-  IF(USE_QT5 AND _UPPER_BUILD STREQUAL "RELEASE")
-    LIST(APPEND GLOBAL_DEFINITIONS " -DQT_NO_DEBUG")
-  ENDIF()
+  # Special Qt 5 cases
+  IF(GLOBAL_DEFINITIONS MATCHES "QT_CORE_LIB")
+    # Hack to define missing QT_NO_DEBUG with Qt 5.2
+    IF(_UPPER_BUILD STREQUAL "RELEASE")
+      LIST(APPEND GLOBAL_DEFINITIONS " -DQT_NO_DEBUG")
+    ENDIF()
 
-  # Qt5_POSITION_INDEPENDENT_CODE should be true if Qt was compiled with PIE
-  IF(Qt5_POSITION_INDEPENDENT_CODE AND GLOBAL_DEFINITIONS MATCHES "QT_CORE_LIB")
-    SET(_USE_PIE ON)
-  ENDIF()
+    # Qt5_POSITION_INDEPENDENT_CODE should be true if Qt was compiled with PIE
+    IF(Qt5_POSITION_INDEPENDENT_CODE)
+      SET(_USE_PIE ON)
+    ENDIF()
 
-  IF(_USE_PIE)
-    LIST(APPEND _FLAGS " ${CMAKE_CXX_COMPILE_OPTIONS_PIE}")
-    LIST(APPEND _FLAGS " ${CMAKE_CXX_COMPILE_OPTIONS_PIC}")
+    IF(_USE_PIE)
+      LIST(APPEND _FLAGS " ${CMAKE_CXX_COMPILE_OPTIONS_PIE}")
+      LIST(APPEND _FLAGS " ${CMAKE_CXX_COMPILE_OPTIONS_PIC}")
+    ENDIF()
   ENDIF()
 
   LIST(APPEND _FLAGS " ${GLOBAL_DEFINITIONS}")
diff --git a/code/nel/include/nel/misc/common.h b/code/nel/include/nel/misc/common.h
index c2a40cc0f..10f6a97e6 100644
--- a/code/nel/include/nel/misc/common.h
+++ b/code/nel/include/nel/misc/common.h
@@ -349,6 +349,9 @@ std::string formatThousands(const std::string& s);
 /// The program will be launched in the current directory
 bool launchProgram (const std::string &programName, const std::string &arguments, bool log = true);
 
+/// This function executes a program and returns output as a string
+std::string getCommandOutput(const std::string &command);
+
 /// This function kills a program using his pid (on unix, it uses the kill() POSIX function)
 bool killProgram(uint32 pid);
 
diff --git a/code/nel/src/3d/driver/opengl/CMakeLists.txt b/code/nel/src/3d/driver/opengl/CMakeLists.txt
index 6d8efb929..18b4886ed 100644
--- a/code/nel/src/3d/driver/opengl/CMakeLists.txt
+++ b/code/nel/src/3d/driver/opengl/CMakeLists.txt
@@ -5,8 +5,11 @@ IF(NOT WIN32)
     FIND_LIBRARY(CARBON NAMES Carbon)
     FIND_LIBRARY(COCOA NAMES Cocoa)
   ELSE()
+    SET(OLD_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
+    SET(CMAKE_FIND_LIBRARY_SUFFIXES .so)
     FIND_PACKAGE(X11)
     FIND_PACKAGE(XF86VidMode)
+    SET(CMAKE_FIND_LIBRARY_SUFFIXES ${OLD_CMAKE_FIND_LIBRARY_SUFFIXES})
   ENDIF()
 ENDIF()
 
@@ -71,12 +74,12 @@ IF(UNIX AND NOT APPLE)
     TARGET_LINK_LIBRARIES(${NLDRV_OGL_LIB} ${X11_Xext_LIB})
   ENDIF()
   # libraries needed to be linked while linking to static X11 libraries
-  FIND_LIBRARY(XCB_LIBRARY
-    NAMES xcb
-    HINTS ${X11_LIB_SEARCH_PATH})
-  IF(XCB_LIBRARY)
-    TARGET_LINK_LIBRARIES(${NLDRV_OGL_LIB} ${XCB_LIBRARY})
-  ENDIF()
+#  FIND_LIBRARY(XCB_LIBRARY
+#    NAMES xcb
+#    HINTS ${X11_LIB_SEARCH_PATH})
+#  IF(XCB_LIBRARY)
+#    TARGET_LINK_LIBRARIES(${NLDRV_OGL_LIB} ${XCB_LIBRARY})
+#  ENDIF()
 ENDIF()
 
 IF(WITH_PCH)
diff --git a/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp b/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
index 36ac67281..3c60da0c0 100644
--- a/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
+++ b/code/nel/src/3d/driver/opengl/driver_opengl_window.cpp
@@ -2058,6 +2058,12 @@ bool CDriverGL::getModes(std::vector<GfxMode> &modes)
 
 #elif defined (NL_OS_UNIX)
 
+	if (!_dpy)
+	{
+		nlwarning("3D: Unable to list modes because Display is NULL, did you forget to call init() ?");
+		return false;
+	}
+
 	bool found = false;
 	int screen = DefaultScreen(_dpy);
 
diff --git a/code/nel/src/misc/common.cpp b/code/nel/src/misc/common.cpp
index 8eca1d566..d2d2e5cb0 100644
--- a/code/nel/src/misc/common.cpp
+++ b/code/nel/src/misc/common.cpp
@@ -23,6 +23,10 @@
 #	include <ShellAPI.h>
 #	include <io.h>
 #	include <tchar.h>
+
+#define popen _popen
+#define pclose _pclose
+
 #elif defined NL_OS_MAC
 #	include <ApplicationServices/ApplicationServices.h>
 #elif defined NL_OS_UNIX
@@ -32,6 +36,8 @@
 #	include <sched.h>
 #endif
 
+#define MAX_LINE_WIDTH 256
+
 #include "nel/misc/command.h"
 #include "nel/misc/path.h"
 #include "nel/misc/i18n.h"
@@ -840,6 +846,25 @@ bool launchProgram(const std::string &programName, const std::string &arguments,
 
 }
 
+std::string getCommandOutput(const std::string &command)
+{
+	FILE *pipe = popen(command.c_str(), "r");
+	
+	if (!pipe) return "";
+
+	char buffer[MAX_LINE_WIDTH];
+	std::string result;
+
+	while (!feof(pipe))
+	{
+		if (fgets(buffer, MAX_LINE_WIDTH, pipe) != NULL) result += buffer;
+	}
+		
+	pclose(pipe);
+
+	return result;
+}
+
 /*
  * Display the bits (with 0 and 1) composing a byte (from right to left)
  */
diff --git a/code/ryzom/tools/client/client_config_qt/main.cpp b/code/ryzom/tools/client/client_config_qt/main.cpp
index 52d3cf7bb..f298426f7 100644
--- a/code/ryzom/tools/client/client_config_qt/main.cpp
+++ b/code/ryzom/tools/client/client_config_qt/main.cpp
@@ -31,6 +31,7 @@
 	Q_IMPORT_PLUGIN(QCocoaIntegrationPlugin)
 #elif defined(Q_OS_UNIX)
 	Q_IMPORT_PLUGIN(QXcbIntegrationPlugin)
+	Q_IMPORT_PLUGIN(QXcbGlxIntegrationPlugin)
 #endif
 
 #endif
diff --git a/code/ryzom/tools/client/client_config_qt/system.cpp b/code/ryzom/tools/client/client_config_qt/system.cpp
index 6070e4abd..8ef5a930b 100644
--- a/code/ryzom/tools/client/client_config_qt/system.cpp
+++ b/code/ryzom/tools/client/client_config_qt/system.cpp
@@ -145,6 +145,7 @@ void CSystem::GatherOpenGLInfo()
 	try
 	{
 		NL3D::IDriver *driver = NL3D::CDRU::createGlDriver();
+		driver->init(0);
 		GetVideoModes( openglInfo.modes, driver );
 		driver->release();
 	}
@@ -161,7 +162,7 @@ void CSystem::GetVideoModes( std::vector< CVideoMode > &dst, NL3D::IDriver *driv
 
 	for( std::vector< NL3D::GfxMode >::iterator itr = modes.begin(); itr != modes.end(); ++itr )
 	{
-		if( ( itr->Width >= 800 ) && ( itr->Height >= 600 ) && ( itr->Depth == 32 ) && ( itr->Frequency >= 60 ) )
+		if( ( itr->Width >= 800 ) && ( itr->Height >= 600 ) && ( itr->Depth >= 16 ) )
 		{
 			CVideoMode mode;
 			mode.depth = itr->Depth;