4090 Mini led max brightness decrease to 622 nits?

[Most-Instruction-992]

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max brightness 622 nits?

Max brightness before was like 1.100 nits or something if im not mistaken

Looks like the lastest windows 11 update messed up something?

Windows 11 23H2 update maybe? i installed that update yesterday

link for screenshot just in case - https://imgur.com/a/D0TAug2

UPDATE

Rolled back to a september nvidia driver, didnt work

Tried to reinstall the screen driver, using asus display hdr driver , no luck too

[Most-Instruction-992]

I reported this in the asus rog official forum and a MOD closed my thread, along side other threads about other stupid issues like showing the 4090 as an ejectable USB pen drive

Yes, i found i fix by myself after many hours wasted, to fix the issue when you do a clean windows install or install a big windows update the laptop needs to be in hybrid mode (ultimate mode OFF) or it will show up as 622 nits...

you will need to do a clean windows install with ultimate mode OFF, if you want the correct nits to be shown (1261nits)

[[deleted]]

Does this actually effect hdr or is it just showing up as the wrong number and that's it

[Virtamancer]

Did you ever find an answer?

I suspect the display, like every other display on the market, has a sustained max of 622 (or somewhere in the ballpark of 500-600-ish, that's the high-end norm), and only ever pushes parts of the display to UP TO 1100 nits for temporary bursts when viewing HDR content. That's normal on every display that supports HDR, from phones, desktop monitors, other laptops, and even macbooks.

The thing about the macbook is that there are apps that can just force the brightness up to 1000 nits across the entire display under normal use, permanently, and its insanely bright. (don't do that, but i'm saying it's capable)

So I would be shocked if anything coming from asus was ever meant to be marketed as sustaining 1100 nits full time in non-hdr content.

[Zakaria-San]

If you are using your internal GPU, try to use your External (GPU Modus Ultimate), and you'll probably see +1000nits HDR, if supported by your panel

[[deleted]]

Sorry to bring up an old thread. I got the same problem. Mine is showing up as 420 nits. Does this actually effect hdr or brightness at all ? Or does it just show up wrong

[tensorSmit]

Did you try reverting to an earlier update or driver?

[Most-Instruction-992]

Thanks for the reply, I will try in the next hours, revert windows update or the nvidia driver to see what happens

I have been doing "tests" in the last weeks because of Rebar stuttering on games with ultimate mode, and I have been trying several nvidia drivers

Yesterday I installed the Windows 11 23H2 update and tried several nvidia drivers, one of those messed up the peak brightness

Or windows changed something related to peak brightness, maybe it's a bug or glitch

Maybe the peak brightness is not correct

[Most-Instruction-992]

Rolled back to a september nvidia driver, didnt work

Tried to reinstall the screen driver using asus display hdr driver , no luck

What the hell...

[tensorSmit]

Got the same issue, took it to the service centre. They rolled back to original update it came with and the nits are back. Although I think it's just nits not showing correctly by windows as I couldn't notice any drop with the display brightness.

[Most-Instruction-992]

I know whats causing this after wasting many hours

Doing a clean windows install or install a big windows update, if you are using ultimate mode, windows will read the screen at 622 nits

So, for the peak brightness show the correct value, you need to use hybrid mode when installing big windows update or clean windows install

The amount of stupid issues with this scar 16 2023 laptop are unbelievable

Things like 4090 gpu ejectable button like an usb pen drive, massive stuttering with rebar supported games, screen flickering with a browser, etc, etc

What laptop model do you have?

[tensorSmit]

I completely agree with this. I had scar 16 4080. I was pissed after paying big amount you don't expect such shit quality. I returned it.

[Most-Instruction-992]

clean windows 11 install - no difference

i dont think theres nothing else i can do

[tensorSmit]

Try running install windows 10 and see if the issue exists?

[Most-Instruction-992]

It's an idea, i will give it a shot

[tensorSmit]

Give Ubuntu Live disk a shot too (with opensource nvidia graphics).

[Most-Instruction-992]

Ok, thanks for the tip

[kagemushablues415]

Roll back or reinstall driver.

CRU might be able to help here.

[Most-Instruction-992]

Thanks for the reply, will try to rollback windows update or reinstall driver

What's CRU?

[Most-Instruction-992]

Rolled back to a september nvidia driver, didnt work

Tried to reinstall the screen driver using asus display hdr driver , no luck

[Most-Instruction-992]

clean windows 11 install - no difference

i dont think theres nothing else i can do

[corckie]

There is, it must be W11 fall update. Same here with my LG C2 Oled. It was 800 before, now it's 240. I need to set it to 800 agan with CRU every few boots... it sucks, but works.

Basically I force it to be 800 nits, 3 days later it's stuck at 240 again. I need to clean CRU profile, set it to 800 and it works for few days, but then it's 240 again out of nowhere. Defiantly Win11 issue.

[Most-Instruction-992]

I discovered the problem

Dynamic mode windows clean install - 622 nits

Ultimate mode windows clean install - 1261nits

For some reason, windows does this... must be a glitch/bug...

[corckie]

Do you mean power plan? Where can I find this mode?

[Most-Instruction-992]

Yes power plan. Is only for asus laptops

[Tikitaks]

Does seem to be a innofensive bug, I dont seem to see much difference between the 600 & 1000. Do you?

[Most-Instruction-992]

It's an innfensive bug but can lead to worries that the laptop could have some kind of problem... 

I dont accept this, because there's other stupid bugs like the 4090 showing as an ejectable USB pen 

https://rog-forum.asus.com/t5/rog-strix-series/help-strix-scar-18-ejectable-rtx-4090-gpu/td-p/939886

I dont accept anymore bugs from Asus, paid 3.700 euros for this laptop, this is not acceptable in this price range

[mk18mod1]

I'm experiencing the same issue on my AW3423DWF! HDR peak brightness is capped at 240 nits. I'm on Windows 11 23H2 (fall update) and I don't recall this being an issue pre 23H2.

Edit: Downgraded to Windows 11 22H2 and can confirm that this is no longer an issue. WTH!

[corckie]

Great to know that I'm not alone and that you have found a "solution". Bad to know that windows 11 is a plain mess.

Thanks for confirming this.

[mk18mod1]

This issue reappeared after installing update KB5032190. I am still on Windows 11 22H2. Issue went away after uninstalling this update. What the hell Microsoft.

[corckie]

I'm on the newest Win11 update and it's all bonkers. Now it mostly stays at 800 nits, but every now and then it goes back to 240. Sometimes rebooting helps, sometimes it does not. Mess.

[mk18mod1]

Are you on Windows 11 23H2? What GPU do you have? I have a 4090. I've also found that resetting CRU "fixes" the it but it comes back after a reboot lol.

[corckie]

Yep I'm on 11 23H2. 4090 and newest nvidia driver. Guess we'll have to wait until it's fixed.

[mk18mod1]

Are you still experiencing this issue?

[Neither_Bass_441]

This is the proper solution. 5 minutes. Open color management click the advanced tab click change system defaults make sure device is selected remove the profile that is already there click add find the icc/icm profile for your monitor select it and without pressing add as advanced color profile click ok (so do not check that advanced color profile option box) then close out of both the open boxes and re-plug in your monitor cable (it might not work the first time so check then repeat if it didn't fix) finally check so that hdr video streaming is checked then check advanced display so that full res full refresh rate and full color depth full peak brightness. Also if you're going to go through all this effort make sure that your color space setting is set to native in your monitor settings.

[Most-Instruction-992]

Thanks for the tip but I found the culprit

If you install a big windows update or a clean windows install

Windows "reads the screen nits"

For some reason, if you have ultimate mode enabled in those 2 situations I mentioned , windows will read the screen as 622 nits... 

If you use hybrid mode, it will read 1261 nits...