Redetect video driver for usb-hdd.

pym/cl_fill_install.py

@@ -860,7 +860,27 @@ class fillVars(object, glob_attr):
     
     def get_os_install_x11_video_drv(self):
         """Video driver used by xorg"""
-        return self.Get('os_x11_video_drv')
+        if self.Get('os_install_root_type') == 'usb-hdd':
+            xorg_modules_dir = '/usr/lib/xorg/modules/drivers'
+            avialable_drivers = \
+                map(lambda x: x[:-7],
+                filter(lambda x: x.endswith('_drv.so'),
+                listDirectory(xorg_modules_dir)))
+            defaultDriver = {
+                'vesa':'vesa',
+                'nvidia':'nvidia' if "nvidia" in avialable_drivers else "nv",
+                'ati':'fglrx' if "fglrx" in avialable_drivers else "radeon",
+                'intel':'intel',
+                'via':'via',
+                'vmware':'vmware'}
+            hr_video = self.Get('hr_video')
+            if hr_video in defaultDriver and \
+                defaultDriver[hr_video] in avialable_drivers:
+                return defaultDriver[hr_video]
+            else:
+                return "vesa"
+        else:
+            return self.Get('os_x11_video_drv')
     
     def get_os_install_x11_composite(self):
         """On/off composite"""