G750 Auto contrast is driving me nuts!!

[kidfromhell]

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!!

[iammax]

I don't have dual cards, you must be on a different laptop than I am

[Darnassus]

Is this STILL going on? I thought it was fixed ages ago by some automatic update.. I've not had the problem since, and I did a fresh OS install only a couple of months ago.


Edit: Still happens to me while on battery which is weird. Not when plugged in the wall however.

[hurleytom]

Darnassus wrote:
Edit: Still happens to me while on battery which is weird. Not when plugged in the wall however.

Same here. Only while on battery...

[Maxter]

Darnassus wrote:
Is this STILL going on? I thought it was fixed ages ago by some automatic update.. I've not had the problem since, and I did a fresh OS install only a couple of months ago.


Edit: Still happens to me while on battery which is weird. Not when plugged in the wall however.

I had the 335.23 drivers and it was only happening on battery. I updated to 347.25 and now i happens all the time... poop

[RelentlessXJR]

To anyone still dealing with this:

This is a feature, not a bug. It is because Nvidia Optimus switches to the integrated graphics of the cpu any time a dedicated gpu is not absolutely required so you have to turn off the iGPU's adaptive setting as well. In order to disable all automatic backlight/brightness/contrast adjustment, you now have to do so in 3 separate places: Nvidia control panel, windows control panel, and intel HD graphics control panel. The intel option is called display power saving technology, and is in the power menu of the Intel HD control panel.

[Maxter]

RelentlessXJR wrote:
To anyone still dealing with this:

This is a feature, not a bug. It is because Nvidia Optimus switches to the integrated graphics of the cpu any time a dedicated gpu is not absolutely required so you have to turn off the iGPU's adaptive setting as well. In order to disable all automatic backlight/brightness/contrast adjustment, you now have to do so in 3 separate places: Nvidia control panel, windows control panel, and intel HD graphics control panel. The intel option is called display power saving technology, and is in the power menu of the Intel HD control panel.

I have the G750JW. The integrated video card has been physically disconnected on these models. Only the GTX765m is available. The issue still stands.

[hurleytom]

Wow! Just fixed it on battery with number 4 here (already had 1-3 done):
http://www.eightforums.com/tutorials/6042-adaptive-brightness-turn-off-windows-8-a.html

[Light]

I have the same problem with the contrast. After restarting the laptop the contrast goes super bright, this is a real pain especially when working in dull light or dark conditions when I require lower brightness & contrast settings. When I perform a restart/reboot I find I need to Restore Defaults in the NVIDIA Control Panel and then reset all my preferences for the Adjust Desktop Colour Settings and Apply. I've never met this type of issue before on any other laptop make or model except this ASUS G750JW, which begs the question, how did this obvious issue get missed during testing ?

With reference to the previous post, I cannot find an Intel HD graphics control panel. The Device Manager only shows Display adaptors info for NVIDIA GTX 765M. How is the Intel HD graphics control panel accessed ?

[kidfromhell]

Light wrote:
I have the same problem with the contrast. After restarting the laptop the contrast goes super bright, this is a real pain especially when working in dull light or dark conditions when I require lower brightness & contrast settings. When I perform a restart/reboot I find I need to Restore Defaults in the NVIDIA Control Panel and then reset all my preferences for the Adjust Desktop Colour Settings and Apply. I've never met this type of issue before on any other laptop make or model except this ASUS G750JW, which begs the question, how did this obvious issue get missed during testing ?

With reference to the previous post, I cannot find an Intel HD graphics control panel. The Device Manager only shows Display adaptors info for NVIDIA GTX 765M. How is the Intel HD graphics control panel accessed ?

Woah ,it's been time since I visited this thread and it looks like this issue is getting worse over time. And for your question, the G750 JX/JW series notebooks doesn't come with Intel HD control panel because it's simple - it doesn't have an Intel card and it doesn't support Optimus either. You just have the GeForce Experience/nVidia Card.

[Light]

Thanks for the responses, most appreciated.

This type of issue/defect and the fact it has not being fixed by ASUS is unacceptable. It suggests a lack of rigorous quality control in their testing procedures. It is such a simply defect to reproduce it should never have made it into the released product.

If ASUS decide not to fix this issue soon I will go elsewhere for my next purchase.