cancel
Showing results for 
Search instead for 
Did you mean: 

G750 Auto contrast is driving me nuts!!

kidfromhell
Level 9
I guess everyone knows about the issue I'm talking about and we'll proceed.

I have a G750JX-DB71 and I've been facing this issue right from the day I received my laptop. I've done tons of research and still the problem was unsolved. Changed Windows Power Management Settings, NVidia Dynamic Contrast Enhancement Settings, Stopped Sensor services using services.msc, uninstalled Power4Gear Hybrid and changed power plan settings as well. That's it when I switch to battery, this problem starts again. Even now whilst typing this, the contrast has changed causing a pain.

Finally, I did a CLEAN installation of Windows 8.1 and sigh, it's still there. But didn't install P4G and all. I'm with Nvidia driver of 327 I guess. I dunno what to do. Even when switching tabs in Gmail, the contrast changes due to the theme applied.

Finally, I contacted ASUS and they have provided me a RMA. As I'm new to USA, I do have some issues in sending my notebook to them. Issues in the sense, I can't travel to FedEx office carrying this monster packaged in a box. So this is my last try and I've brought the issue again to you guys. If it's possible do help me, or else I have to send it I guess. I dunno how much time will they take to process and send it as my entire studies depends on this one. I can't wait for long. I'm also worried that they might send me a refurbished one if they can't sort this issue out.

Also as I don't have any P4G and such, I begin to guess that I might have got a faulty display. Is it so? Do you guys advice me to go for RMA?

Update: Video added!

https://vimeo.com/87343067

Thanks Pat for the clip!

***** PERMANENT SOLUTION*****


ADVANTAGES:

You'll lose this contrast issue, FOREVER!!!

DISADVANTAGES:

You'll end up using a very old (6 months I guess) NVIDIA Graphics Driver so you might lose out on bugs and patches, performance improvements etc.

STEPS:

1. Go to Asus 750JX driver download page.
2. Select Win 8 x64 for the OS (Not 8.1)
3. Download this VGA driver (NVIDIA Version V9.18.13.1193 - The first one)
4. Install (When installing check custom install and select 'clean install')
5. Reboot
6. And voila, the problem is gone forever.
7. Don't forget to go to GeForce Experience and uncheck all the automatic updates or this sneaky little software might update you to new drivers silently and you'd have to repeat the steps again.

THIS IS THE PERMANENT SOLUTION, FOR NOW UNTIL NVIDIA RECOGNISES THIS AND FIXES IT. SO THIS HAS A FAIR SHARE OF DISADVANTAGES AS WELL!!
381 Views
200 REPLIES 200

kidfromhell wrote:
No hmscott, nothing works.


kidfromhell, this problem is so strange, I have never had it, I have all the visible settings set to disable Adaptive Brightness for Windows and disable Adaptive Contrast in the Nvidia control panel, and I just spent 2 full battery cycles recently to see if I can induce it, and it doesn't happen.

What I am saying is I would be happy to compare system settings, registry and otherwise, so we can find the difference between my system without Adaptive Brightness problems, and your system which does.

There are some of my registry entries for AdapativeDisplay
36873

hmscott wrote:
What I am saying is I would be happy to compare system settings, registry and otherwise, so we can find the difference between my system without Adaptive Brightness problems, and your system which does.


Here it is hmscott, but I highly guess that it remains the same for both of us.

36880

kidfromhell wrote:
Here it is hmscott, but I highly guess that it remains the same for both of us.
36880


That is the same registry entry I posted, and the numbers are the same 🙂

If you think it would be helpful to compare the rest of the Adaptive Brightness registry settings, you use snipping tool to capture just the region of interest into a jpg, and do the same for the other Adaptive Brightness entries. Expanding that one and the other 4 in that area would be a start.

Update: I am running 337.50 BETA

cl-Albert
US Customer Loyalty Agent
@hmscott, kidfromhell, sorry if I missed it, but do you also want to compare vga driver versions since it sounds like the issue is related to this as well?

Oh, I guess if you can solve it from the Windows registry side, we may not really need to worry about the vga driver version used, but might still be good to know what everybody is running?

PatRaven
Level 7
Great that you keep the thread running. Hopefully will find a suitable solution in the end.

My input for today...
I deleted all entries (the whole hierarchy) below HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AdaptiveDisplayBrightness including AdaptiveDisplayBrightness folder and then restarted. No difference at all! So I guess the problem is located elsewhere. Or some imporant Key is missing under \AdaptiveDisplayBrightness.

Br,
Pat!

PatRaven wrote:
Great that you keep the thread running. Hopefully will find a suitable solution in the end.

My input for today...
I deleted all entries (the whole hierarchy) below HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AdaptiveDisplayBrightness including AdaptiveDisplayBrightness folder and then restarted. No difference at all! So I guess the problem is located elsewhere. Or some imporant Key is missing under \AdaptiveDisplayBrightness.

Br,
Pat!


That's a good point, removing the registry tree made it recreate the tree with defaults in use. Did you notice if the recreated values are now different, if anything was added or not recreated?

hmscott wrote:
That's a good point, removing the registry tree made it recreate the tree with defaults in use. Did you notice if the recreated values are now different, if anything was added or not recreated?


I exported the entries first. Then deleted. Then restarted. No change. Imported back the entries. Windows does not recreated these entries automatically. Maybe you can export your KEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AdaptiveDisplayBrightness tree and attached it here so that we can try using your setup, or at least compare the two!? If they are identical I think we must look elsewhere for the problem. Maybe an export of all Nvidia entries could be helpful as well but we could try that later. I am not sure if maybe the GPU tweak tool allows you to export all Nvidia settings or if there is another tool available for that. I assume that there must be tons of Nvidia settings, not necessarily stored in a single tree structure...

hmscott
Level 12
PatRaven, there are two major AdaptiveDisplayBrightness registry tree's, here are both as .reg.zip files, let us know if it helps 🙂

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AdaptiveDisplayBrightness
Image

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\AdaptiveDisplayBrightness
Image

YAaay it woorked! After so many attempts 🙂 Thank you so much!

hmscott wrote:
PatRaven, there are two major AdaptiveDisplayBrightness registry tree's, here are both as .reg.zip files, let us know if it helps 🙂

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AdaptiveDisplayBrightness
Image

HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\AdaptiveDisplayBrightness
Image

Bjarke wrote:
YAaay it woorked! After so many attempts 🙂 Thank you so much!


Bjarke!, that's great! What did you do to apply the .reg files? Did you reboot in between? Any other helpful details that would help others apply the fix?