HP Spectre x360 Stopped Working with Monitor

[jwithing]

My HP Spectre x360 has recently stopped connecting to my external monitor. It uses a USB-C to HDMI cable (USB-C on one end, HDMI on the other). 

It detects the monitor as a "USB 2.0 Billboard" device and fails to display any image.

It is unlikely the problem is with the cable or monitor as I tested them both on my other laptop.

What can I do to troubleshoot?

[EddyK · Accepted solution]

Hello @jwithing,

It identifying it as a USB 2.0 Billboard device means that the DisplayPort Alternate Mode is not being properly configured.

First of all, a specific model name or product number would be appreciated. E.g. HP Spectre x360 - 13-ap0028ca or 5MT98UA#ABL

Information on how to find a laptop's model name or product number is detailed in this HP document. (Please do not post serial numbers on the HP Support Community. The difference between a product number and a serial number is that the product number contains a # sign) 

You may need to update some drivers.

Could you also try projecting the display by connecting the laptop and the monitor before the laptop starts up?

Kind regards,

Eddy

[jwithing]

Eddy, I downloaded one of the drivers from the HP Site (~300 mb download) and the issue has been resolved for now.

Thanks,
Jeff