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diff -up xf86-video-fbdev-0.4.3/src/fbdev.c.dma xf86-video-fbdev-0.4.3/src/fbdev.c
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--- xf86-video-fbdev-0.4.3/src/fbdev.c.dma	2012-07-02 12:46:46.000000000 +0100
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+++ xf86-video-fbdev-0.4.3/src/fbdev.c	2012-07-02 13:02:40.545956779 +0100
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@@ -673,6 +673,8 @@ FBDevScreenInit(SCREEN_INIT_ARGS_DECL)
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 	       pScrn->offset.red,pScrn->offset.green,pScrn->offset.blue);
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 #endif
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+	pScreen->canDoBGNoneRoot = 1;
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+
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 	if (NULL == (fPtr->fbmem = fbdevHWMapVidmem(pScrn))) {
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 	        xf86DrvMsg(pScrn->scrnIndex,X_ERROR,"mapping of video memory"
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 			   " failed\n");