diff --git a/cpp/display/display_glx.cpp b/cpp/display/display_glx.cpp
index 05e2563..8f2dae1 100644
--- a/cpp/display/display_glx.cpp
+++ b/cpp/display/display_glx.cpp
@@ -110,6 +110,7 @@ rk_display_t rk_create_display(
         return nullptr;
     }
     char const * const glx_exts = glXQueryExtensionsString(display->display, DefaultScreen(display->display));
+    // rk_glx_printf(glx_exts);
 
     int fbcount;
     GLXFBConfig * const fbc = glXChooseFBConfig(
@@ -151,12 +152,9 @@ rk_display_t rk_create_display(
         display->display, RootWindow(display->display, vi->screen), vi->visual, AllocNone);
     XSetWindowAttributes swa;
     swa.colormap = display->colormap;
-//    swa.background_pixmap = None;
-//    swa.border_pixel = 0;
     swa.event_mask = RK_EVENTS_MASK;
     display->window = XCreateWindow(display->display, RootWindow(display->display, vi->screen),
-        0, 0, width, height, 0, vi->depth, InputOutput, vi->visual,
-        /*CWBorderPixel |*/ CWColormap | CWEventMask, &swa);
+        0, 0, width, height, 0, vi->depth, InputOutput, vi->visual, CWColormap | CWEventMask, &swa);
     XFree(vi);
     if (!display->window) {
         rk_glx_printf("Failed to create window.");
@@ -193,6 +191,7 @@ rk_display_t rk_create_display(
     glXMakeCurrent(display->display, display->window, display->context);
 
     char const * const gl_exts = reinterpret_cast<char const *>(glGetString(GL_EXTENSIONS));
+    // printf("[GL] %s\n", gl_exts);
     if (rk_extension_supported(gl_exts, "GL_EXT_base_instance")) {
         rk_DrawElementsInstancedBaseInstance =
             reinterpret_cast<rk_DrawElementsInstancedBaseInstanceFunc>(