Comment 12 for bug 737891

Chatting with kirkland and RoAkSoAx, they believe they have the same issue, and are also on arrandale chips.

Nothing arrandale-specific has been added to the xrandr utility recently (in fact the only changes to xrandr since maverick are man page fixes, autoconf tweaks, and one minor fix that only comes into play when using Xinerama... nothing at all relevant to this bug.)

On the X side, pretty much with -intel now all the XRANDR commands are pass-thru to the kernel. There is some logic in X to handle things but it mostly is hardware-independent; the hardware specific modesetting logic is down in linux's drm module.