On 04/24/2015 01:28 PM, Scott Allen wrote: > On 24 April 2015 at 13:05, James Knott <james.knott at rogers.com> wrote: >> So, what else might I be missing? > Just speculating... maybe it has something to do with the particular > video card/chip and/or driver? > Well, it works in a Windows virtual machine on the same computer.