Displayport to HDMI Cable

Kurgen · 4 May 2021 at 09:46

i have an old HP laptop at work connected to spare HDMI on a 1440p monitor. Every cable i try it only displays 1080p. I have tried the laptop on another screen using displayport to displayport and it works at 1440p. I have tried the DP to HDMI cable at home on my RTX2060 DP into the HDMI on monitor and it works fine at 4K... is it just random if things work when trying to transmogrify Ports and Resolutions.

mickyflinn · 4 May 2021 at 09:55

What revision is the hdmi port ?

Kurgen · 4 May 2021 at 10:41

mickyflinn said:
What revision is the hdmi port ?

Not sure , but the monitor is pretty new untitled (lenovo.com)

Video input HDMI (Digital) Interface Input signal Horizontal addressability Vertical addressability Clock frequency HDMI VESA TMDS (Panel Link™)/HDMI 2560 pixels -- 1440 lines (max) 300 MHz

mickyflinn · 4 May 2021 at 10:51

Kurgen said:
Not sure , but the monitor is pretty new untitled (lenovo.com)

Video input HDMI (Digital) Interface Input signal Horizontal addressability Vertical addressability Clock frequency HDMI VESA TMDS (Panel Link™)/HDMI 2560 pixels -- 1440 lines (max) 300 MHz

If the hdmi port on the laptop is below 1.3 revision it will only display 1080p.

What model laptop ?

Kurgen · 4 May 2021 at 11:49

mickyflinn said:
If the hdmi port on the laptop is below 1.3 revision it will only display 1080p.

What model laptop ?

There is no HDMI on the laptop .. thats why im using the DP to HDMI cable.

The laptop works fine on another screen using DP to DP at 1440p the DP to HDMI cable tested fine at home at 4k , its an HP Elitebook workstation

Kurgen · 4 May 2021 at 11:56

Maybe the monitor needs the cable to be unidirectional , which it isnt.. possibly the monitor hdmi is trying to be to intelligent , is there a way to force resolutions

Kurgen · 4 May 2021 at 12:09

sorted it.. i used the zbook to connect to go from DP to HDMI and it works at 1440p. which freed up the DP port on the monitor, and this works at 1440p direct to the old elitebook

mickyflinn · 4 May 2021 at 12:12

Kurgen said:
sorted it.. i used the zbook to connect to go from DP to HDMI and it works at 1440p. which freed up the DP port on the monitor, and this works at 1440p direct to the old elitebook

Glad you sorted it.