xbox series s isn’t displaying 120hz at 1440p or 1080p

It depends on what resolution your going to play at and the resolution of the tv,

if 4K, you need HDMI 2.1 to get 4K at 120hz refresh rate,

HDMI 2.0 will only allow 4K at 60hz.

if your at 1080p/1440p, HDMI 2.0 will be ok for 120hz refresh rate, however if it is 1080p/1440p i would recommend getting the Xbox Series S as that is aimed at 1080p/1440p.

Hello, I'm Felipe and I'm an independent Community Expert, and I'll do my best to help you.

There are a few reasons why your Xbox Series S might not be displaying a 120Hz refresh rate, even though it's enabled in the settings. Here are a few things you can try to resolve the issue:

Check the HDMI cable: Make sure the HDMI cable you are using to connect your Xbox Series S to the monitor is compatible with the 1440p resolution and supports a 120Hz refresh rate.

Update the firmware of your monitor: Check to see if there is a firmware update available for your monitor. Updating the firmware can sometimes resolve compatibility issues.

Check the video output settings on your Xbox Series S: Go to "Settings" > "Display and sound" > "Video output" and make sure the output resolution is set to 1440p and the refresh rate is set to 120Hz.

Make sure the game supports 120Hz: Some games may not support a refresh rate higher than 60Hz. Check the game's specifications to see if it supports a 120Hz refresh rate.

Restart your Xbox Series S: Sometimes simply restarting the console can resolve display issues.

If none of these steps help, you may need to contact the manufacturer of your monitor for further assistance.

Xbox only support hdr on 4k so we that have a xbox series s and 1080p 1440p hdr 120hz screen cannot get hdr because its not 4k. On ps4 it works tho 1080p hdr.

Microsoft locked hdr to 4k so if ur monitor dont accept 4k signals ( tick allow 4k box in settings must be selected for hdr) it doesnt work on 1080p 1440p displays usually only if they accept 4k signals. Because microsoft locked it since xbox one s and
one x. It is hard to understand why they not allow it now because they have xbox series s 1440p 120hz hdr console right?

for 120hz you need i think hdmi2.1.

besides connecting the s at 120hz is not going to magically let it run at 120fps, you will be lucky to get 40fps on most games. kills my eyes running so slow.

HDMI 2.1 is only needed if you plan to game at 4K for 120hz , on a 4K 144hz monitor, However there's no gaming monitors available at the moment, that yet has HDMI 2.1, the first HDMI 2.1 monitors that are likely to come in are around the same time as the
Series X (Q4) launch or early 2021 (Q1),

1080p and some 1440p monitors can do 120hz over HDMI 1.4 if it's supported, but best ideally is HDMI 2.0 for 1440p for 120hz,

HDMI 2.0 can do 1080p / 1440p at 120hz and 4K at 60hz,

HDMI 2.1 can do 1080p / 1440p / 4K at 120hz.

For the Xbox Series X, it best to get a 4K TV or monitor that supports 120hz and has HDMI 2.1, to get the full potential out of the Series X.