Fix getting framebuffer resolution.

pym/cl_fill_install.py

@@ -1450,7 +1450,12 @@ class fillVars(object, glob_attr):
         textLines = self._runos("/sbin/fbres 2>&1")
         resolution = ""
         if textLines:
-            resolution = "%s-32"%textLines[0]
+            cxx11,cyx11 = \
+                self.Get('os_install_x11_resolution').partition('x')[0::2]
+            cxfb, cyfb = textLines[0].partition('x')[0::2]
+            if not filter(lambda x:not x.isdigit(),[cxfb,cyfb,cxx11,cyx11])and \
+                int(cxx11) >= int(cxfb) and int(cyx11) >= int(cyfb):
+                resolution = "%s-32"%textLines[0]
         return resolution or "1024x768-32@60"
 
     def get_os_grub2_path(self):