"The display connection may be limited"

[Javi40]

Hello, the ethernet of a usb-c adapter gives the error "The display connection may be limited" when I plug a LAN adapter into the usb-c.

I get a screen error when the adapter does not have HDMI or displayport and the Ethernet does not work. However, the rest of the ports do.

The adapter has Gigaethernet, USB-C and 2 USB 3.

I have updated drivers, disabled and repaired and I don't know what to do anymore.

I have a LAPTOP ENVY 14-eb0xxx

The adapter is an ISY IAD 1018

Translated by google, sorry im spanish

Thanks in advance

[Javi40]

[Raj_05]

Hi @Javi40,

Welcome to HP Support Community.

Thank you for posting your query, I will be glad to help you.

The error "The display connection may be limited" suggests an issue with your USB-C adapter's bandwidth or compatibility. Your ISY IAD 1018 adapter likely doesn't support Alternate Mode (Alt Mode), which is required for video output through USB-C. This could also be affecting the Ethernet connection if the laptop is struggling to allocate bandwidth or resources properly.

Here are some steps to troubleshoot and resolve this issue:

Check USB-C Port Capabilities

• Verify if your HP ENVY 14's USB-C port supports Alt Mode for video output. Not all USB-C ports on laptops support this feature.
  • You can check this in the laptop's specifications on HP's website or in the user manual.

Test with a Different Adapter

• The ISY IAD 1018 adapter may not be fully compatible with your laptop. Try using a USB-C adapter that explicitly supports:
  • Alt Mode for Display Output.
  • GigaEthernet.
  • HDMI or DisplayPort.

Verify Network Adapter Drivers

• Even if you've updated drivers, ensure the Realtek Ethernet Controller (or similar) is properly installed.
  • Open Device Manager → Network Adapters → Look for any errors or missing drivers.

Steps to Reinstall the Driver:

1. Right-click on the Ethernet device in Device Manager.
2. Select Uninstall device and check "Delete the driver software for this device."
3. Reboot your laptop and let Windows reinstall the driver.

Alternatively, download the latest drivers from HP's support website for your model.

Reset Network Settings

• Open Windows Settings → Network & Internet → Advanced Network Settings → Network Reset.
• This will reset all network settings to their defaults.

Check USB Power Delivery (PD)

• The adapter might require more power than the USB-C port can provide. If you're not using the USB-C port for charging simultaneously, it might not be delivering enough power for all functionalities (e.g., Ethernet and USB simultaneously).
• Try connecting the adapter to a powered USB-C hub or directly to the laptop's charging USB-C port.

[Raj_05 · Accepted solution]

Update BIOS

• Outdated BIOS firmware can cause compatibility issues with USB-C peripherals.
  • Visit HP Support and check for BIOS updates for the ENVY 14.
  • Follow the provided instructions to update safely.

Alternative Solution

Consider using separate adapters:

• A dedicated USB-C to Ethernet adapter.
• A separate USB-C to HDMI or DisplayPort adapter that supports Alt Mode.

This modular approach avoids relying on one adapter for all functionalities and reduces compatibility risks.

I hope this helps.

Take care and have a good day.

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

Alden4

HP Support 

[Javi40]

Thanks for answering, I finally returned the adapter and bought another one that was not USB-C. With the normal USB port the Ethernet works well at 1Gbps. Thank you so much

[Raj_05]

Hi @Javi40,

Thank you for your response, 

Is there anything else that I can help you with today?

Please click “Accepted Solution” if you feel my post solved your issue, it will help others find the solution. Click the “Kudos/Thumbs Up" on the bottom right to say “Thanks” for helping!

Take care and have a great day ahead!

Alden4

HP Support