Predator PH18-72 Issue with screen brightness

You can try disabling fast startup. by going to the control panel, power options, choose what the power buttons do, clicking on the change settings that are currently unavailable, and disabling fast startup.

https://community.acer.com/en/discussion/comment/1277652#Comment_1277652

BTW , isn't the screen going dim because it changes between them ? in your case NVIDIA is on lower brightness and the other higher . You can change the brightness in NVIDIA Control Panel .

nvidia.png

All comments

Puraw

https://community.acer.com/en/discussion/706370/predator-ph18-72-issue-with-screen-brightness

This is probably a power issue; you should keep the adapter plugged-in 24/7 and not disconnect during gaming. Make sure the battery is always fully charged when the battery capacity gets low the battery saver kicks in to preserve power that dims the Mini LED screen brightness. Disable the battery Saver feature may help. If you cannot charge the battery to 100% check if you are using a 330W barrel plug power adapter.

It's been plugged in the whole time. Hasn't left 100%. Am using the "Liteon" 330w adapter that came in the box.

Try to update the BIOS to see if it resolves the screen brightness issue.

@AnhEz28 One of the first things I did. It's on 1.08. I appreciate the replies but unless someone has some command prompt magic (that's more than a /scannow) or registry edit then it's been tried and/or done.

Is there any display mode setting in Nvidia control panel?

Yo , i also have the PH18-72 14900 4090 (IPS 250Hz) , for me it's not an issue at least not yet but yeah can't change it . Probably because some other app has control over it (it`s just a guess) . There are some settings in the NVIDIA control panel > adjust desktop color settings (just tested it and works) if that helps you .

This laptop was just released i`m pretty sure it's full of bugs and stuff like that at least for 6-12 months and even after , i still haven't fully went through it (including windows 11) . Acer disappointed me a lot with what's inside the laptop , things like the SSD a bit over the motherboard`s chipset , one of the RAM sticks with the chips facing the motherboard , lots of empty space which could've been used for better cooling and other stupid things like that .

PS: Puraw are you reading/understanding what people asks around here ? or you just like to increase your number of posts ?

Laquic

Yeah, Puraw doesn't know anything or even read the issue properly. He just trying to get many posts as he can.

Ya, that crossed my mind it being new. Could be a Nvidia issue too with the brightness slider not doing anything while only using the GPU because i noticed while in that mode the monitor driver is different and the IGPU driver just disappears altogether until Optimus or auto is on. Did just find something interesting. Shutting the laptop down all the way then turning it on the screen is fully bright. Restarting it will come back dim until unplugged then plugged back in. Tested it four times and it's consistent. Does anyone know how you'd disable quick boot on this? I thought it's in the power settings but am not seeing it.

You can try disabling fast startup. by going to the control panel, power options, choose what the power buttons do, clicking on the change settings that are currently unavailable, and disabling fast startup.

@AnhEZ28 Thank you. I had remembered right after i posted lol Interestingly with fast boot off then issue remains even when shutting laptop down. With fast boot on issue is there on restart but not when shutting down. I guess something going on at the kernal level that unplugging and plugging back in resolves, but I guess a restart will reset the kernal but with fast boot on the kernal stays awake on shut down and retains that change that occurs when unplugging and plugging back in? Who knows. I'm an equipment/heavy truck mechanic not a software engineer so this will do and will be nice if updates resolves it. I'm good with just shutting it down with fast boot on, and Optmius seems good at switching work loads to the dedicated GPU. I just didn't want to be unplugging and plugging in the cord all the time because typically that port is soldered to the board and I'd be screwed if it wears out too fast lol I'll consider this resolved enough. Thanks everyone for your time.

You should just use the NVIDIA GPU only and done , i don't really like integrated GPUs and this is a "gaming" laptop so i don't see any points of using the integrated one unless you want to save energy but even so i don't think it's much of a difference .

Watch out for the wake up from sleep/screen off (longer ones) the screen remains black , currently trying to fix it .🤣

https://community.acer.com/en/discussion/comment/1277652#Comment_1277652

BTW , isn't the screen going dim because it changes between them ? in your case NVIDIA is on lower brightness and the other higher . You can change the brightness in NVIDIA Control Panel .

nvidia.png

No. Does it whether IGPU is disabled or not. As of now, restarting computer will cause issue. Shutting down computer with quick boot enabled, after fixing it with unplug and plug in, will keep it fixed until computer restarts for whatever reason (Windows update for example). Difference between IGPU and GPU is brightness control does not work when set to GPU only mode via bios and/or predator sense but both will be dim, while brightness slider maxed, upon start up after a reset. The control in the Nvidia panel does work and just nudging that slider will bring brightness back (far more than what the slight nudge should do, so moving that slider also resets whatever is going on) but OS and keyboard level brightness control remains broken while in GPU only mode. I'm using this as a desktop replacement (until next wave of stuff comes out, will sell this and build desktop once 5090s can be had and AMD has its next iteration of X3D chip unless Intel is a better option at that time, I'm figuring AMD will have another gen of subpar RT performance and nothing to compete at the halo tier of GPU) so this will due until then. Was a console gamer my whole life, first built in 2019, tried to go back to console for simplicity, but literally can not stand juttery 30 fps now or playing in 1080p on a 4k screen (which will often be the 60 fps option) all with what would be low settings on a PC, so came back to PC gaming but too close to new desktop parts to drop 6 or so grand on a build (would be getting either ASUS mini led or one of the new 240hz oleds so selling this laptop will go towards that part) so settled for this (on sale for 2600) until the time is right. I'm happy enough with it now, stress tested everything and nothing throttles on performance mode, so as long as that liquid metal holds up for a year or so I'll be happy. I'm gonna go actually play some games now that I am not considering returning this. Thanks to everyone for the help.