If you remove the dock and just connect the external monitor direct to the USB-C port, is the video output on that port working correctly without the dock?
USB-C Port Not Outputting Display (DP Alt Mode), But Data Transfer Works Fine
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hamid abdussukkoor
0
Reputation points
Hi,
I’m using a Victus 16 (2022) laptop with two external monitors:
One monitor is connected through HDMI and works perfectly.
The second monitor is connected through a USB-C port using a Portronics Mport 9-in-1 dock, but it suddenly stopped showing any display.
Here’s what I’ve checked so far:
The USB-C port still works for data transfer and charging, so it’s not fully dead.
The dock and cable both work fine with another device.
The HDMI monitor works fine, so GPU output is okay.
I’ve updated Intel and NVIDIA drivers, and also installed the latest Windows updates.
It used to work before, but now only the HDMI output works.
Could this be a hardware issue with DP Alt Mode, or something related to drivers or BIOS settings?
Any help or suggestions to diagnose this would be appreciated.
Thanks!
Windows for home | Windows 11 | Display and graphics
1 answer
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DaveM121 796.6K Reputation points Independent Advisor2025-11-02T12:41:22.7433333+00:00 -
hamid abdussukkoor 0 Reputation points
2025-11-02T16:36:29.31+00:00 I don’t have a direct USB-C to HDMI or DisplayPort cable to test the monitor without the dock. However, I tested the same dock and cable with another device, and it worked perfectly. video output was fine. So, it seems the dock is okay, and the issue might be related to my laptop’s USB C port or its DP Alt Mode
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DaveM121 796.6K Reputation points Independent Advisor
2025-11-02T16:43:23.6+00:00 Thank you for that information.
Go to the support page for your laptop on the HP website, then from there, download and install the version of Chipset drivers they recommend and while there, if you do not have your drive encrypted with Bitlocker, check for any BIOS update that may need to be installed
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