You said your machine is brand new -- is there a 802.11ac draft chip in it by any chance?
F/OSS drivers tend to lag behind, in my experience; for "brand new" machines running x86 I've always found myself just using ndiswrapper with the Windows drivers.
I think there are a variety of factors behind this, such as 802.11ac not yet being standardized, chips designed to have firmware loaded from the host machine (so that it can be updated later if the standard changed), and the FCC/CRTC/regulatory bodies in each region of the world (preventing you from having pure F/OSS drivers if said drivers could be modified to allow the hardware to work outside of the e.g. frequencies legally allowed in your region).
Although you will usually want to look up the raw PCI/USB IDs rather than rely on the strings provided by your operating system.
Note that this only works if your system actually can find the PCI/USB IDs for your hardware in its database (adding entries to the list is easier than actually writing drivers for devices, so the probability of this working is relatively high but not 100%). If your hardware is completely unrecognized though, this won't work.
Of course, this may not tell you the exact chipset -- usually, for that, you'll have to look at the chip itself and read the markings off of it. You probably don't want to pull your laptop apart to find that out, but if it's a popular laptop, you can often find out what other people have found inside by looking on sites like iFixit.
F/OSS drivers tend to lag behind, in my experience; for "brand new" machines running x86 I've always found myself just using ndiswrapper with the Windows drivers.
I think there are a variety of factors behind this, such as 802.11ac not yet being standardized, chips designed to have firmware loaded from the host machine (so that it can be updated later if the standard changed), and the FCC/CRTC/regulatory bodies in each region of the world (preventing you from having pure F/OSS drivers if said drivers could be modified to allow the hardware to work outside of the e.g. frequencies legally allowed in your region).