This patch is needed for x11-driver/xf86-video-i810 on new hardware (g45 and 965gm). Applying this patch on version 2.4.2-r1 works for me (see https://bugs.freedesktop.org/show_bug.cgi?id=17806 ). My X now doesn't lock up on startup. This patch might also solve the bug #237971
You guys want the same patch :) As for bug #237971, I don't know, it seems unrelated. We'll see. Thanks *** This bug has been marked as a duplicate of bug 238194 ***