Here's a trivial patch to add a check for the aforementioned null pointer. It doesn't address the underlying issue of why the pointer is null in the first place (likely lack of xrandr 1.2 support); I'll investigate that further.
Here's a trivial patch to add a check for the aforementioned null pointer. It doesn't address the underlying issue of why the pointer is null in the first place (likely lack of xrandr 1.2 support); I'll investigate that further.