Question 2560x1600 monitor displays only 1280x800

[jhsachs]

I'm trying to connect a ThinkPad P15 (20YQ-0087US) laptop to an HP ZR30w monitor. The monitor is supposed to display 2560x1600 resolution. It's displaying 1280x800 instead, and Windows says that's the highest resolution it's capable of.

I can't find specs for the ThinkPad's external display support, but its built-in display is 3840x2160, so it's hard to believe it can't support 2560x1600 external.

The monitor has DVI and DP-Port connectors. The laptop has HDMI only. I'm using a DVI-to-HDMI cable. My first thought was that the cable only supported single-link DVI, but I checked, and the monitor connector and the cable's plug are both DVI-D dual-link.

Can anyone suggest what's wrong here? I'm baffled.

 

[Lutfij]

The laptop has HDMI only.
The specs page here;
https://www.lenovo.com/us/en/p/lapt...VtOyZz2nh0R25BW1jHwPri3uKtg-Oc-bvX#tech_specs
says you should have access to DP 1.4 courtesy of your Type-C port. That being said, you still have access to HDMI 2.0 which is plenty for the resolution you're looking to power the external monitor with.

https://www.hp.com/canada/products/landing/monitors/files/ZR30w-data-sheet-June-2010.pdf
You should look into a HDMI to DP adapter or cable. If that fails you would need an active adapter.

 

[jhsachs]

Thanks. I looked at that page, but I didn't know what to look for.

It appears that either solution (HDMI to DP or USB C to DP) will work. Is one preferable to the other? The USB C-DP cable costs about half as much, which will determine my choice if not.