A true mainline Linux Kernel for the Pinebook Pro

[Arwen]

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PS One thing I have discovered since posting yesterday is that there do seem to be some problems with USB3 devices (USB3 devices won't enumerate and the hub built into  in my adapter doesn't show up in lsusb -t). I only found this when I went looking for trouble though ;-) since all the kit I usually hang off a docking adapter is USB2.

There is a difference between the various types of USB C Alternate mode with DisplayPort. All versions of USB C Alternate mode with DisplayPort do seem to allow USB 2, (480Mbps, half-duplex), to work. If a users wants 4K @ 60hz, then then they sacrifice the 2 USB 3 lanes so DisplayPort can use them.

Your device seems to be one that supports 4K @ 30hz, so it might be able to work with USB 3, as the vendor claims. We will have to wait for @tsys to see if there is an issue with USB 3 on our side.


I think most of us want the USB 3 port active, so we are looking for 2 lane DisplayPort devices. I wish we could determine that in advance of purchase. There are some on Amazon that do claim to be "USB C Alternate mode with DisplayPort" that also claim USB 3 support. But I am not yet ready to pull the plug. At present, I use a plain USB C to DisplayPort device, with no USB at all. Works fine for it's use to my 1080p monitor.