Index: linux-2.6.13-rc7/drivers/video/aty/radeon_pm.c
===================================================================
--- linux-2.6.13-rc7.orig/drivers/video/aty/radeon_pm.c
+++ linux-2.6.13-rc7/drivers/video/aty/radeon_pm.c
@@ -2790,7 +2790,8 @@ void radeonfb_pm_init(struct radeonfb_in
 #endif /* defined(CONFIG_PM) && defined(CONFIG_PPC_OF) */
 
 #if defined(CONFIG_ACPI) && defined(CONFIG_X86)
-	if (rinfo->is_mobility && rinfo->pm_reg) {
+	if (rinfo->is_mobility && rinfo->pm_reg &&
+	     rinfo->family == CHIP_FAMILY_RV250) {
 		rinfo->reinit_func = radeon_reinitialize_vgapost;
 		rinfo->pm_mode |= radeon_pm_post;
 	}