added note about kernel modules
diff --git a/docs/fbdev-dri.html b/docs/fbdev-dri.html
index e9e27d6..991ef3b 100644
--- a/docs/fbdev-dri.html
+++ b/docs/fbdev-dri.html
@@ -132,6 +132,11 @@
 agpgart                43072   1 
 </pre>
 
+<p>
+If the driver complains that the radeon/mga/etc/ kernel module is too
+old, you'll have to compile/install a newer one from the DRI project.
+</p>
+
 
 <h2>3.2 Configuration File</h2>