USB C to HDMI plus Power Adapter

asked 2017-11-08 08:52:57 -0500

elegos gravatar image


I've got an HP ProBook with an Intel i7-7500U (and integrated GPU). I've got a single USB 3 type C port, which I've connected a Lenovo USB-C to HDMI adapter. It was advised as a linux-friendly hardware (no extra drivers needed), but I can't find the way to let it work...

My current display monitors setup is the following: - Laptop's - HDMI - VGA

Desired setup: - Laptop's - HDMI - HDMI via USB type C

I've then disconnected the VGA port and connected the USB-HDMI adapter, connecting then the third monitor.

This is the output of lsusb:

Bus 001 Device 009: ID 17ef:7212 Lenovo


[21050.824692] usb 1-2: new high-speed USB device number 9 using xhci_hcd
[21051.334556] usb 1-2: New USB device found, idVendor=17ef, idProduct=7212
[21051.334565] usb 1-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[21051.334570] usb 1-2: Product: USB C to HDMI plus Power Adapter
[21051.334575] usb 1-2: Manufacturer: Lenovo 
[21051.334579] usb 1-2: SerialNumber: 0000000000000001

xrandr --query:

Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
XWAYLAND1 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 530mm x 300mm
   1920x1080     59.96*+
XWAYLAND2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 310mm x 170mm
   1920x1080     59.96*+

The monitor list (in GNOME) shows only the laptop's and the HDMI monitor, but not the one connected via the adapter.

I've tried disconnecting the other HDMI display and connecting only the one with the adapter, but it will still not work.

May you please help me? Is it even possible to use this adapter on my CPU?


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Does your hardware (support the HDMI Alternate Mode for USB-C?

genodeftest gravatar imagegenodeftest ( 2017-11-14 11:24:50 -0500 )edit

I don't understand the setup you're describing. What is "Laptop's"? Do you mean 1 Laptop or 2 Laptops? Where is the monitor?

genodeftest gravatar imagegenodeftest ( 2017-11-14 11:25:29 -0500 )edit

@genodeftest: Laptop's = of laptop (genitive). I'm not sure whether my hardware supports the HDMI mode for USB-C, it's part of the question. How can I check it? I thought it was all about the GPU (in this case, the CPU's) and the USB controller

elegos gravatar imageelegos ( 2017-11-24 08:14:37 -0500 )edit