diff -up xf86-video-fbdev-0.4.3/src/fbdev.c.dma xf86-video-fbdev-0.4.3/src/fbdev.c

--- xf86-video-fbdev-0.4.3/src/fbdev.c.dma	2012-07-02 12:46:46.000000000 +0100

+++ xf86-video-fbdev-0.4.3/src/fbdev.c	2012-07-02 13:02:40.545956779 +0100

@@ -673,6 +673,8 @@ FBDevScreenInit(SCREEN_INIT_ARGS_DECL)

 	       pScrn->offset.red,pScrn->offset.green,pScrn->offset.blue);

 #endif

+	pScreen->canDoBGNoneRoot = 1;

+

 	if (NULL == (fPtr->fbmem = fbdevHWMapVidmem(pScrn))) {

 	        xf86DrvMsg(pScrn->scrnIndex,X_ERROR,"mapping of video memory"

 			   " failed\n");