4k HDMI output form my HP x360 13 to Dell monitor stopped working after several months. Did not change cables or anything. 2k HMDMI output works fine.
I have tried to connect laptop to monitor using C/Displayport, but the monitor isn’t detected. Looks like the HP x360 13 might be having an issue sending 4k output.
Thanks for reaching out to us, I am sorry this is not working as expected and I am happy to help!
I also replied with this message to your email.
Based on your description I would like to start by resetting the docking station and computer to see if this helps to restore the functionality, please perform the following:
Disconnect the docking station from the computer and remove the power connection from the back of the docking station, unplug all USB devices from the docking station
Disconnect the docking station’s power supply from the wall and let both the docking station and power supply sit for 30-90 seconds to fully discharge
Restart the computer: In Windows 10: Start → ( Power Icon ) → Restart
After 30-90 seconds, reconnect the power supply to the wall socket or power strip
Reconnect the power supply to the docking station
verify the blue power LED is illuminated on the front of the docking station, please let me know if this does not come on
Reconnect the docking station to the computer, please verify the USB cables are fully seated on both the docking station and the computer
check for the external displays to be detected on the system, if they are not detected please restart the system and let me know if they are not detected after the restart
Reconnect USB devices to the docking station one at a time, test each device to make sure it is working before connecting the next device.
Please let me know if this helps, if not we can go from here.
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