On Thu, Mar 29, 2018 at 11:17:58AM -0400, Giles Orr via talk wrote:
I grabbed Fedora's very latest kernel this morning (4.15.12-301.fc27.x86_64) given Russell's point that there's been a lot of new feautures related to this. After a reboot I ran 'lspci' - I have USB3.0, not 3.1. This is backed up by the Zenbook manual. The manual calls the port "USB Type-C/DisplayPort combo port" and says "Use a USB Type-C adapter to connect your Notebook PC to an external display." I didn't find anything more specific than that, but it's promising. It'll probably be a long time before I test it though!
I haven't got my head around the spec enough to know: does the fact that it's USB-C guarantee that it can deliver 20v and lots'o-watts to accessories? What about accepting that voltage from a charger? I'd bet that Asus hasn't bothered to set up that port to allow charging through it as the computer also has a dedicated old-style charger/plug combo.
Well remember that to make things confusing, USB 3.0 was renamed to 3.1 Gen 1 by the USB 3.1 standard. So USB 3 now has: 3.1 Gen 1: 5Gbps (Was 3.0) 3.1 Gen 2: 10Gbps USB ports do not need to support the USB 3 PD (power delivery) spec. It is optional. USB 3 really has made USB very complicated (although also more useful). -- Len Sorensen