sandybridge_fix

--- linux-3.7-rc2.orig/drivers/gpu/drm/i915/i915_suspend.c  2012-10-21 18:32:56.000000000 +0200
+++ linux-3.7-rc2/drivers/gpu/drm/i915/i915_suspend.c   2012-10-22 23:56:31.000000000 +0200
@@ -877,6 +877,8 @@
        I915_WRITE(IMR, dev_priv->saveIMR);
    }

+   msleep (10);
+
    /* Cache mode state */
    I915_WRITE(CACHE_MODE_0, dev_priv->saveCACHE_MODE_0 | 0xffff0000);