CLEVO P150EM Screen brightness issue

Hey guys anyone able to give me some information on this issue.

The FN+F8 - F9 are not able to adjust my brightness on my laptop in windows 10.

When I go into Display Settings from Desktop and move the brightness slider around this also gives NOTHING....

I have tried disabling the Generic PnP Monitor driver which I read could help or fix the brightness issue but sadly this has not actually done anything.

So I installed the HOTKEY software which allows me to change the brightness then I close the software reboot and then it will reboot into windows 10 with the selected brightness but I am not able to change it on the fly....

Any ideas would be magic! Thank you all.

 

Try installing GPU drivers from Intel/AMD/Nvidia to get brightness. If you've optimus i.e. Intel+nvidia GPUs first install intel and then nvidia drivers. After installing intel driver you'll get your brightness slider back.

 

Actually, install the NV driver first, notebook version with Optimus support, then the Intel driver. This way the Intel driver will correctly setup both systems.

 

Ok issue is fixed.

I had to go into my power settings for the laptop and play around with the Display option in there once I did that I was able to use my FN brightness keys again on the fly. Thanks for trying to help out!

 

Nice...

You can do that? I never managed to get Nvidia driver up and running w/o installing Intel driver first.

 

Same with my p170em, no matter if it was amd(7970m, 8970m) or nvidia(1060).

 

That's the way it's designed in optimus/enduro systems.

 

Maybe @Chastity is using hardware MUX.

 

Maybe, but general advice is Intel drivers first.

 

My system does have a muxer. But when I was doing support for Asus on Optimus systems w/o muxer, that doing the dGPU first allows the Intel install to detect the dGPU first time and setup accordingly.

Then again, I'm sure drivers have improved, and if doing the Intel first works, who am I to argue?

 

Newer MUXless optimus works that way like I mentioned! Even if you run nvidia installer it won't pick up nvidia card w/o installing Intel driver.

 

Normally without Intel drivers the nvidia ones will refuse to install.

 

Chastity was talking about MUX based optimus. Should have made that clear in the first place to avoid confusion!

 

No, actually, I remember. When I did driver updates on a machine, whenever I updated the dGPU, I always made sure I redid the iGPU afterwards. My bad.

 

ok

 

I tended to just leave the igp be unless there were issues.

 

Ok, I'm having this issue, not even any settings in the Power Options for Display. NP9150, 680M, Intel HD4000. Which drivers exactly do I need to install (Optimus?) and in what order? NV first (w/ Optimus?) and then the newest Intel (date of newest is 9/18)?

This has caused me a TON of headaches, so I'm glad to see I'm not the only one. Started on Friday when I noticed that my brightness wouldn't work, figured it was time for a completely fresh install anyway, so I re-installed my Windows 10 using my old 1709 install USB. Brightness worked again! However, something was messed up because then my Start menu search would not find any of my installed software (iTunes, CCleaner, etc.) So, yesterday, I downloaded the very latest Windows 10 install ISO (1809) and did a new install last night. Joy, joy, the start menu search worked again, but the brightness problem was back. I guess what happened was in my first fresh install, I inadvertently installed the drivers correctly which fixed the brightness issue and on my second install last night, I didn't install in the right order and initial issue for all of re-installing returned.

 

Still a no-go for me, I uninstalled both drivers, even completely uninstalled the Intel driver and removed it completely from my system by checking the "Delete the driver software for this device" to keep from being installed unprompted on restart. Reset the computer, let the NV install, I installed the Intel. Still not able to control my brightness either using FN or going all the way into the Windows settings. When I go to the Power Options/Display the only single option is "Turn off display after" and that's it. No other options exist. This is really really p---ing me off guys.

 

Disconnect from internet or put FW in everyhting disable state otherwise windows downloads drivers in background. Use DDU to nuke them.

 

Still no luck whatsoever, once again I completely uninstalled both drivers and I still cannot dim my computer screen whatsoever. First, I setup a Group Policy to prevent any drivers being installed on the Intel HD 4000. I uninstalled both drivers using Display Drivers Uninstaller (DDU) and then after restarting, installed the latest NV driver for my 680M, restarted after install and once more to make sure. Checked the Device Manager and confirmed it as a good install and that nothing had been installed on the Intel, it was still registering as an unknown VGA device indicating my Group Policy had successfully prevented Windows Update from installing anything to it. I then proceeded to disable the group policy and, with my wifi turned off so as to prevent Windows Update from trying to download and install, I installed the latest Intl HD driver. Restarted and I still cannot dim my screen. This is so frustrating. I was hoping to see some replies by now, but I'll go to bed and sleep on it. I'll take my laptop to work with me tomorrow and see what suggestions there may be here. Might try a complete reinstall yet again and this time take my time and test the dimming from the get go and with each piece of software I install.

 

Just saw your reply, I didn't see it before my prior post. As you can see I did everything I could think of including every suggestion you had. I can't wrap my hea around this, and I can't understand why the display options on the power options doesn't show anything but the one selection "Turn off after." This is frustrating.

 

A screenshot will be helpful!
EDIT: Run unhide power options using this bat file https://gist.github.com/Nt-gm79sp/1f8ea2c2869b988e88b4fbc183731693

 

Going into this option here and changing it from "NONE" to "1 (LOW)" then finally allowed me to start changing my brightness on the fly.
Let me know how you get on and remember to obviously press Apply.

WOOPS I just read through and you mention that you actually do not even see these options.. My bad! Sorry.

 

Adaptive brightness might need ambient light sensor to auto brightness change based on luminosity value calculated by ALS.

 

Windows Update is also providing current Intel driver. I just redid my whole setup so I can use Intel DCH and NVIDIA DCH packages.

 

Thanks guys! I went ahead and decided to re-install again last night, so we'll see. For now it's working again, but after I install anything, I test it and see what happens. Thanks!

 

I'm not even going to attempt to install any updated NV drivers or Intel, just whatever I get from MS will work, as long as I can still dim and brighten my display matters more to me than the latest greatest brokenest drivers available. I don't really game at all on my laptop anyways.

 

Can you at least set brightness with the keys before Windows loads, and then Windows sticks with whatever you had set? I was doing that for a while. It means you need to reboot whenever you want to change the brightness, but it's something.

 

Hi there, i just found this thread because i'm having the exact same issue, and by exact i mean exact. My p150em worked absolutely fine but just 2 days ago i realised that i cannot change the brightness anymore, no matter what i tried. After a clean reinsallation of windows it worked fine until i updated some drivers. My guess is that the most recent nvidia driver is causing the issue for me, however rollbacking or using ddu doesn't work. The only fix for me is reinstalling fresh windows everytime the bug occurs. I'd love to hear a solution for this issue. I will install ubuntu now and see how that works. If any of you guys finds a solution, please let me know here.

 

The nvidia gpu is not driving your display. Focus on the Intel drivers which are.

 

Yep, only solution I found was installing windows and leaving the drivers alone. I really don’t game on it anyway, so it’s no big deal for me to roll along with whatever windows installs. Hopefully, intel will figure out the issue soon and update accordingly.

 

Yep, that’s what it was doing. But that was a pain, especially if I was going from my living room to my bedroom (yes, I keep my laptop on a stand by the bed, a an info junkie.) Having to reset just to dim it was ridiculous.