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Nyceis
10-16-2014, 09:55 PM
Hi,

I received my G751JY today and while I like it but there are two problems:

1) It does not support Optimus which has a negative effect on the battery life. This is a bigger problem for me as I'm away from the wall pretty regularly.

2) While on battery, there seems to be no way to turn off the auto-dim or auto-contrast. I've tried the adaptive brightness settings in power options, uninstalling Splendid, disabling Sensor services.

Any thoughts?

N

hmscott
10-16-2014, 10:10 PM
Hi,

I received my G751JY today and while I like it but there are two problems:

1) It does not support Optimus which has a negative effect on the battery life. This is a bigger problem for me as I'm away from the wall pretty regularly.

2) While on battery, there seems to be no way to turn off the auto-dim or auto-contrast. I've tried the adaptive brightness settings in power options, uninstalling Splendid, disabling Sensor services.

Any thoughts?

N

Nyceis, you know it's strange, I didn't want to read too much into it, but none of the official Asus releases or G751 product descriptions mention Optimus.

Not having Optimus is a blessing.

The G750's with Optimus have shown just how little battery benefit Optimus provides, the inconvenience for many, and for some the absolute unsuitability due to their main applications not being Optimus aware - only running on Intel, made many wish for no Optimus at all, and to restore the direct connection of the screen/HDMI/DisplayPort to the Nvidia GPU.

Do you see a menu something akin to this when right clicking on an app in an Desktop Explorer window?

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Introducing the Optimus routing layer
http://techreport.com/review/18443/nvidia-brings-optimus-switchable-graphics-to-notebooks/2

Please double check :)

Is the G751 battery removable?

Thanks for the heads up on Optimus!

OldTimez
10-16-2014, 10:28 PM
As far as I'm aware the battery is integrated so.... your not gonna be able to pack 2 batteries or so ^.

hmscott
10-16-2014, 10:31 PM
As far as I'm aware the battery is integrated so.... your not gonna be able to pack 2 batteries or so ^.

Asus ROG G751JY-DH71 review - the 5th photo in the gallery
http://www.digitaltrends.com/laptop-reviews/asus-rog-g751jy-dh71-review/#/5

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Hard to tell from this shot...

OldTimez
10-16-2014, 10:37 PM
These are pictures of the G750 dude. https://www.youtube.com/watch?v=akjzKO4HfQQ

hmscott
10-16-2014, 11:20 PM
These are pictures of the G750 dude. https://www.youtube.com/watch?v=akjzKO4HfQQ

OldTimez, fixed the post, found a G751JY-DH71 bottom shot. It's hard to tell from that photo if the battery is removable.

I am watching the video, but can't find them saying there is no removable battery, and there is a comment asking about a removable battery.

Tomasz Jasiński
2 hours ago
Thanks for the review. Can battery be detached? 

What time point in the video did you see the "no removable battery" image / mention?

The closest they get is starting at 12:30, they show the bottom, but don't mention whether the battery is removable or not.

Can someone with a G751 please let us know if there is a removable battery? :)

OldTimez
10-16-2014, 11:29 PM
I was reading the forums over at notebookcheck someone with a G751 said the battery wasn't removable.

Nyceis
10-16-2014, 11:33 PM
No, the battery is not easily removable (it is held in by covered screws).

There is no intel graphics menu and no application power settings in the menus. I'm 100% Optimus is not on this one.

Does anybody have any links to anything showing Optimus' battery difference?

N

hmscott
10-16-2014, 11:46 PM
No, the battery is not easily removable (it is held in by covered screws).
There is no intel graphics menu and no application power settings in the menus. I'm 100% Optimus is not on this one.
Does anybody have any links to anything showing Optimus' battery difference?
N

Nyceis, I get 3 hours and 20 minutes on my G750JH, and a G750JZ user did the same test and got 3 hours and 50 minutes. It's more, and to you it might matter, but to me - it doesn't. Sorry, I don't have the link handy.

That is too bad that the battery isn't easily removable. I guess it won't matter to me either, but it doesn't look like it should have been a problem to make it removable. Have you tried to pull the back panel to see if when it is off the battery is easily replaceable?

Apple only does it due to packaging issues in their sardine can design, but the Asus case clearly seems designed to make it removable.

Maybe Asus wasn't selling enough removable batteries?

Nyceis, the ROG laptop has never been a mobile device, so to speak, it has been at most a portable device, with battery power for those few times you need it.

Maybe the lower power 970m/980m will get longer life than an 880m/780m?

These days I use a 6.4" phone for mobile use, and occasionally have tried a large tablet, but still keep going back to the large phone for mobile use. I only crack open the laptop for support use on 4G, and that isn't the ROG laptop - too heavy to lug around for work use.

You might consider pairing up one of the new 2 in 1 laptop/tablet convertibles - the new Core M one's just starting to ship. I am eyeing one for mobile Windows/Linux use.

Gaming on the G750 with Optimus was just as bad as gaming on the non-Optimus - the Intel GPU just isn't strong enough to run the games that need the full Nvidia GPU to run well.

I wish someone would come out with an external battery product with 2-3x the G750 capacity - then we could just plug that in when we are mobile with the G750/G751 :)

hmscott
10-17-2014, 01:00 AM
...
2) While on battery, there seems to be no way to turn off the auto-dim or auto-contrast. I've tried the adaptive brightness settings in power options, uninstalling Splendid, disabling Sensor services.
Any thoughts?
N

Cross-posted from Notebookreview, in case you don't see it there first.


I did check the BIOS and nothing
Honestly, I really wish I had known this as I think it is a deal breaker for me too...
Going to play some more tonight and unless I can find a solution to either Optimus or the autobrightness problem, I'll setup the RMA tomorrow.
N

Nyceis, you might want to give yourself the full return time to figure this out, and not just turn it around so quickly.

This is a new laptop and problems take time to solve. Once you work out the auto-brightness problem, maybe a few tests on battery will work well enough for you to keep the G750JY - it seems like a great laptop :)

There was a problem with people that did a Microsoft install of Windows, they couldn't get rid of the auto-contrast / brightness, did you reload the OS from scratch?

You should know there are people that still haven't gotten it working right on their G750, but fortunately I have. I can list the things I did, the 2 main ones are:

Uninstall Power4Gear. It puts in it's own Power Plans over yours when you unplug and plug back in - switching from AC to battery triggers Power4Gear to put in it's own Power Plans. You can tune it's Power Plans too, but for some reason they revert back to their own settings later.

You can verify this by looking at the settings before after removing power and re-connecting power. PC Settings in Windows 8.1 GUI => PC and Devices => Power and Sleep --> Adjust my display brightness automatically will be there if enabled, and won't be there if it isn't. I don't see that option, as I set it in my Power Plan Advanced Features.

Set the Display settings as you did, but also take the precaution of setting the Display Brightness at the same value for all settings - that way if it switches it won't be perceptible

My AUO screen is very bright, and I can only use it at 100% outdoors. 80% seems to be the best for indoor use.

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There is also an Nvidia setting that can get enabled for Dynamic Contrast Enhancement, disable it, or do as I do and don't use the Nvidia settings - I only enabled it briefly to show the option, it is for video only, but some complained about it:

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There are lots of links for help, this one is nicely detailed:

Adaptive Brightness - Turn On or Off in Windows 8
http://www.eightforums.com/tutorials/6042-adaptive-brightness-turn-off-windows-8-a.html

Good thing you don't have Optimus, then you would also need to do the Intel settings :)

Please let us know if this fixes it, otherwise if those aren't enough, and they should be, we can still try other things in the registry. Rebooting, maybe even powering off, in between helps too.

hmscott
10-17-2014, 02:42 AM
Interacting on notebookreview site, re-posting here.


I appreciate the help!

This is the factory install so far; won't reinstall until I decide to keep

There is no Power4Gear in the Add/Remove Programs. I did try that setting in nvidia too. No difference. I set brightness to max in all plans and all settings, no luck.

Already disabled adaptive brightness in power settings.

Honestly, I would actually probably call it dynamic contrast. The contrast gets crazy when the screen is dark on battery and then goes back to normal with a light colored screen.

N

Nyceis, weird, there is no Power4Gear installed? I wonder if Asus renamed it. That's nice to know it is gone

Which Power Plan are you using for AC and for Battery? I use Balanced for both, but you could have Battery Saver power plan enabled when on Power, so you need to set the Advanced settings for that Power Plan as well. Might as well set all of the Power Plans to the same settings...for testing.

Can you please post the Asus installed apps from Programs and Features? They may be different. Is there an Intel Display related install, anything from Intel?

Here is what I have uninstalled: P4G, Splendid, Asus Live, Asus Vibe, Asus DVD (I have Cyberlink PowerDVD Ultimate 14), Gaming Mouse, Cyberlink 2 Go.

Here is what I have left installed for the OS from the original Asus Build OS:

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I have some upgrades for drivers ready to install, so those aren't absolutely the newest.

What does your G751 have left installed, and what did you remove?

Did you try setting the brightness manually with Fn+F6 *before* and *after* auto-brightness dims it?

I have heard of dual settings for the Fn+F6/F5 setting based on auto brightness - it has been a while since I fixed it for myself. You could also try setting the brightness via the slider for the Active Power Plan after auto-brightness takes effect.

hmscott
10-17-2014, 02:54 AM
..No, the battery is not easily removable (it is held in by covered screws)...

Nyceis, if you find that the battery under the panel is removable, I found this solution for charging a spare battery outside the laptop:

http://www.ebay.com/itm/External-battery-charger-for-Asus-A42-G750-G750-ASUSROG-G750-laptop-battery-/261296164131

It is labeled as for the G750, but if the internal battery in the G751 is the same device - just land locked inside the case - then perhaps, annoying as it might be, you could make due with occasional battery swaps...

If that company or another would make a working solution to use an external battery with a cable fback to the G751/G750 AC adapter port, that would be awesome :)

Nyceis
10-17-2014, 12:44 PM
hmscott and I found a solution for the adaptive brightness / auto contrast on the g751.

His registry files at this post solve the problem quite nicely :)

http://rog.asus.com/forum/showthread.php?43315-Auto-contrast-is-driving-me-nuts%21%21&p=403670&viewfull=1#post403670

Thanks hmscott for your help!

N

MHaensel
10-18-2014, 12:41 AM
My G751 is on pre-order, but if Asus skipped Optimus, that's a good thing for me. Just providing a data point for future engineering decisions.
I've already downloaded the autobrightness fix - thanks for Nycels and hmscott for the advance info!

bsod
12-11-2014, 07:42 AM
Same issue as nyceis w/ the annoying auto contrast adjustment when on battery. The screen seems to auto adjust the contrast or "White level" depending on how much white is displayed on the screen. If there is no white, then it cranks the brightness of the whites way down so there is virtually no contrast. If there is some white, it up's the whites a bit so they're grayish. If there is a lot of white on the screen then it cranks it all the way up. How is one supposed to get any accurate color/contrast or black/white levels when working with any video/photos/digital paint with this behavior?

I only realized exactly what this annoying behavior was when I was testing the flickering on my screen by tiling this inversion pattern image as my desktop background: 44108

When there is only the desktop, you can see all the icon text and everything else get very dim. When different windows of different sizes are opened, the annoying autocontrast behavior can be observed. And the brighter the whites, the more intensely visible the flickering is.

Tried all the solutions listed above to no avail =(

hmscott
12-11-2014, 04:59 PM
Same issue as nyceis w/ the annoying auto contrast adjustment when on battery. The screen seems to auto adjust the contrast or "White level" depending on how much white is displayed on the screen. If there is no white, then it cranks the brightness of the whites way down so there is virtually no contrast. If there is some white, it up's the whites a bit so they're grayish. If there is a lot of white on the screen then it cranks it all the way up. How is one supposed to get any accurate color/contrast or black/white levels when working with any video/photos/digital paint with this behavior?

I only realized exactly what this annoying behavior was when I was testing the flickering on my screen by tiling this inversion pattern image as my desktop background: 44108

When there is only the desktop, you can see all the icon text and everything else get very dim. When different windows of different sizes are opened, the annoying autocontrast behavior can be observed. And the brighter the whites, the more intensely visible the flickering is.

Tried all the solutions listed above to no avail =(

Did you try disabling adaptive brightness ( auto-brightness ) and set the brightness values all the same for both AC and Battery in your current Power Plan?

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kingkaann
12-12-2014, 06:03 AM
who the heck games on battery? i dont get you people. about %99 of the people who had optimus hate it and you are that 1 percent. im glad it doesnt have it. so much problems i've had with it. i can do 100 hz on my laptop easily now instead of being locked to 60 hz because of god damn optimus.