On Fri, Jun 29, 2018 at 11:04:12PM +0200, Maximilian Pichler wrote:
> On Fri, Jun 29, 2018 at 9:49 PM, Bryan Vyhmeister <bryan@bsdjournal.net> wrote:
> > It should work fine because the USB-C ports have DisplayPort signaling
> > built-in and I would not expect any issues.
> >
> > https://www.displayport.org/displayport-over-usb-c/
> >
> > HDMI 1.4 does not support 4k at 60Hz like HDMI 2.0 does but HDMI 2.0 is
> > not supported as you found out. I have not tested USB-C to DP
> > specifically with my NUC6i7KYK but it does drive 4k over DisplayPort
> > which should be the same with USB-C to DP. I do get some weird artifacts
> > like the screen "shaking" back and forth a bit until I launch Xorg which
> > then works perfectly.
>
> Thanks for explaining. Some shaking could be lived with...
>
> I just realized that some monitors (e.g. LG 27UD88) can connect via
> USB-C directly, whilest serving as a USB hub and power source. Would
> this be expected to work as well?
Yes, this works. I connect my Asus UX390UAK to a Lenovo P27h with USB-C.
This monitor is not 4k but "only" 2560x1440. Keyborad and mouse are
connected to the monitor and the monitor also powers the notebook.
Remi
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