Index: x11-drivers/xf86-video-ati/files/patch-src__radeon_kms.c
===================================================================
--- x11-drivers/xf86-video-ati/files/patch-src__radeon_kms.c	(revision 1322)
+++ x11-drivers/xf86-video-ati/files/patch-src__radeon_kms.c	(working copy)
@@ -1,6 +1,15 @@
 --- src/radeon_kms.c.orig	2013-08-07 10:44:09.000000000 +0200
-+++ src/radeon_kms.c	2013-08-31 01:20:44.370468797 +0200
-@@ -270,7 +270,7 @@
++++ src/radeon_kms.c	2013-08-31 19:29:11.369001510 +0200
+@@ -30,6 +30,8 @@
+ 
+ #include <errno.h>
+ #include <sys/ioctl.h>
++#include <sys/param.h>
++#include <sys/linker.h>
+ /* Driver data structures */
+ #include "radeon.h"
+ #include "radeon_reg.h"
+@@ -270,7 +272,7 @@
  radeon_dirty_update(ScreenPtr screen)
  {
  	RegionPtr region;
@@ -9,12 +18,20 @@
  
  	if (xorg_list_is_empty(&screen->pixmap_dirty_list))
  		return;
-@@ -606,7 +606,7 @@
+@@ -606,6 +608,16 @@
  		      dev->domain, dev->bus, dev->dev, dev->func);
  #endif
  
--    info->dri2.drm_fd = drmOpen("radeon", busid);
-+    info->dri2.drm_fd = drmOpen("radeonkms", busid);
++    err = kldload("radeonkms");
++    if (err == -1 && errno != EEXIST) {
++
++	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,
++		   "[drm] Failed to load kernel module for %s: %s\n",
++		   busid, strerror(errno));
++	free(busid);
++	return FALSE;
++    }
++
+     info->dri2.drm_fd = drmOpen("radeon", busid);
      if (info->dri2.drm_fd == -1) {
  
- 	xf86DrvMsg(pScrn->scrnIndex, X_ERROR,