I have a Samsung S95 OLED 4k 120hz TV, and by using the HDMI port, I'm only getting 120hz option at 720p (and that's also if I have to set my TV to Game Mode). Can't I not get a 1080p or even further up to 1440p at 120hz since it's HDMI 2.0? Why am I only seeing 60hz at 1080p and above? Thanks.
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M1 Pro MBP 14 1080p @120hz possible via HDMI port?
- Thread starter LEOMODE
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The page says it supports up to 4k @60Hz. Can you elaborate on the No with proof? I am only connecting with one display
HDMI digital video output
- Support for one display with up to 4K resolution at 60Hz
If you look here:
support.apple.com
It says that "MacBook Pro introduced in 2021 or later" only supports up to 4K up to 60Hz. To get up to 4K at 240Hz requires M2 Pro.
I agree the wording is somewhat ambiguous (it doesn't really say whether or not lower resolutions will get higher refresh rates) but I think we could probably assume that it is not guaranteed, if it works on a particular setup that's great (for example on my M2 Mac Mini I get 75Hz on my 1440p display) but Apple doesn't promise it.
Connect to HDMI from your Mac - Apple Support
Mac computers can use an HDMI cable or adapter to connect to a TV, display, or other HDMI device.
It says that "MacBook Pro introduced in 2021 or later" only supports up to 4K up to 60Hz. To get up to 4K at 240Hz requires M2 Pro.
I agree the wording is somewhat ambiguous (it doesn't really say whether or not lower resolutions will get higher refresh rates) but I think we could probably assume that it is not guaranteed, if it works on a particular setup that's great (for example on my M2 Mac Mini I get 75Hz on my 1440p display) but Apple doesn't promise it.
It is supposed to be able to output 1440 at 144Hz max via HDMI port. I briefly tried this when the 14" M1 Pro was new, plugging it to a LG CX 55" thinking to get 4k120, but the system pref at that time showed 1440p120 instead.
With your Samsung you need to test other cables, and / or use 3rd party display settings apps. 720p120 looks like your connection is capped at HDMI 1.4.
With your Samsung you need to test other cables, and / or use 3rd party display settings apps. 720p120 looks like your connection is capped at HDMI 1.4.
That makes sense. I think I should try a different cable then, which might mean it’s not an HDMI 2.0 cable at the max.
If you look here:
Connect to HDMI from your Mac - Apple Support
Mac computers can use an HDMI cable or adapter to connect to a TV, display, or other HDMI device.
It says that "MacBook Pro introduced in 2021 or later" only supports up to 4K up to 60Hz. To get up to 4K at 240Hz requires M2 Pro.
I agree the wording is somewhat ambiguous (it doesn't really say whether or not lower resolutions will get higher refresh rates) but I think we could probably assume that it is not guaranteed, if it works on a particular setup that's great (for example on my M2 Mac Mini I get 75Hz on my 1440p display) but Apple doesn't promise it.
It doesn't make sense that it supports 4k 60hz but not 1080p at 120hz. HDMI format is always downward compatible meaning it should theoretically support 1080p at 120hz or whatever that is within the HDMI 2.0 format, which is usually the case that if it's 4k30hz, it's 1080p60hz and etc. What Chancha said above would be more plausible so I will first test my cable to even see if it was HDMI 2.0 cable in the first place. If that doesn't work then it really is beyond me.
Make sure that you purchase a certified cable with the certification logo on the box.
Not via HDMI though. I connect my M1 MacBook Air to a 32" 4K desktop monitor via USB-C, and I get full RGB 4:4:4 at 144Hz (my monitor's max refresh rate).
Providing an update. I used 8k 60hz latest cable but still no dice. Only 720p supports 120hz on a 4k 120hz TV using HDMI cable. This sucks and I don't know why, because HDMI 2.0 supports 1080p at 120hz but 720p is the maximum with me at this point. I should probably try out M2 or M3 macbook pro's but this is really disappointing.
Unfortunately I threw away the box but this is what I bought from Amazon. It does support 4k 120hz in my Xbox Series X, gaming laptop etc. hence I have no issues using it with other devices with full HDMI 2.1 capability with zero issues only except my macbook pro m1 pro.
Snowkids 10K 8K HDMI Cable 2.1... https://www.amazon.com/dp/B09HXPCN1M?ref=ppx_pop_mob_ap_share
When a cable is certified it is usually shown in the Amazon listing pictures and description. Don't see it.
Understood, but what does that have to do with only the MacBook not acting up versus all the other devices that output just as fine? Just trying to ask a genuine question here as all the other devices were perfectly compatible by outputting 4K at 120 Hz even, whereas the MacBook wasn’t even able to output 120 Hz at 1080p.
It probably doesn't matter but even the Nvidia Shield Pro has a different port than the MBP (Shield uses 2.0b, MBP is only 2.0). So not a direct comparison.
Doing some quick Googling, I have to agree with the other posters that recommend to actually get a certified cable. Don't know if it will work but if you wish to continue to troubleshoot that would be the next step.
Also, is this helpful at all? https://discussions.apple.com/thread/254426410?sortBy=best
Fair enough. I should definitely buy a certified one to eliminate one last variable. I will buy one, test it out and inform here. Something like this I am assuming: https://www.amazon.com/Ubluker-Certified-HDCP2-3-Compatible-RTX4090/dp/B0CMQKDG3T
Also for the Apple.com link I think its to the DP, not HDMI port.
Thanks again.
Last edited:
Ok, actually it seems like I did buy some cables with a certified logo. See the attached photo.
Let me see tomorrow if that was the cable I used or if not I will try to use it and see how it goes. If it still doesn’t work likely Macbook m1 pro is just not capable of a true 2.0 hdmi.
Attachments
Different hardware, different port electronics. Eliminating the cable as a variable just allows isolating the problem to the 2 ends of the cable.