Dell Inspiron 7720 Lid issues

Question

I have a Dell Inspiron 17R Special Edition/Turbo Edition (7720 base) laptop. I have customized the power options according to my need, and i've chosen the 'lid closing action' as 'do nothing' on both charge as well as battery. as I keep downloading stuff all the time so i dont want my PC to sleep if i close the lid. The first problem (although it doesn't matter much) is that whenever i open or close the lid, it makes a 'ding' sound, just like the one you get when a pendrive is plugged into USB. Second problem is, sometimes when i open the lid back after closing, the screen stays black. Although i can see the backlight is turned on behind the display (faint light is visible indicating screen has turned on), but the actual display stays just black. everything else works, the keyboard backlight and all. it even makes that same 'ding' sound when opening or closing the lid again. but screen doesn't show  anything. i restart the pc and it works fine. display shows up in next boot... doesnt matter if keep the lid closed or open during restart. i even created a hotkey combination to change the resolution. next time this problem occured, i tried changing the resolution. sure, the display flickered (the backlight went off and on) but again it stayed black. although it doesnt happen everytime i close the lid, it does happen at times. only way to overcome this was: i changed to power button action to 'hibernate' so whenever this occured, i hibernated the laptop, and when i turn it back on, everything runs fine and my programs resume from right where they were stopped. But if i could get a permanent solution to this, it would be so better. Also, i'm not sure but this problem might be exclusive to the laptos with 3D display. Laptop Specs: CPU- Core i7 IvyBridge 2.3-3.3 Ghz | RAM- 8GB DDR3 | GPU-nVidia 650M GT 3D (2GB GDDR5 VRAM) | 1TB HDD 5400rpm + 32GB mSATA caching SSD

DELL-Sujatha K · Answer

Hi udaynatt,

Issues like Power management oddities can be fixed in BIOS. Hence I suggest you to flash BIOS to the latest version from the link below:

http://dell.to/VK1u0d

Note: While flashing BIOS connect the Ac adapter and make sure the battery has minimum 15% charge as this needs uninterrupted power supply. Do not use the system till it restarts and comes up to the desktop.
Also update the video driver from the below given link:

http://dell.to/13Vibe9

Restart the system and check. Revert to this post for further queries.

udaynatt · Answer

I've already flashed the BIOS with latest version, i did that when my quickset button stopped working.

That button issue was resolved.

But this display problem persisted before that and after that as well.

DELL-Sujatha K · Answer

Hi udaynatt,

Thank you for the update. I suggest you to update the video drivers from the link given below:

http://dell.to/10RnPNp

Restart the system and check. If the issue persists, I recommend you to create a new user profile and check.

Revert with the status for further assistance.

DELL-Sujatha K · Answer

Hi udaynatt,

Unfortunately we have not received feedback from you on this topic. If you need continued support, please respond to this post. Other community members who need assistance please start your own topic in a new thread.

udaynatt · Answer

Sorry for late reply :) I've updated the video drivers. So far there hasn't been any problem. if anything unusual happens, i'll inform right away.

udaynatt · Answer

I hadn't experienced any blacking problems for sometime after updating display drivers, but it has happened again.

Also, the new updated nVidia 3DVision drivers have brought up a new issue:

I always keep my monitor refresh rate at 120Hz.

Before updating, whenever i enabled the 'Stereoscopic 3D' option to watch 3D Movies, the brightness of my screen was locked to about 70%, and i couldn't change the brightness of display unless i turned off the 'stereoscopic 3D' option from nVidia control panel.

But after updating, no matter whether i enable or disable the 3D option, brightness is always locked to 70%. although i can move the brightess sliders but it doesn't affect the actual screen brightness. The only way to enable the high brightness of screen is to reduce the refresh rate to 60Hz, or create a custome resolution with 119Hz refresh rate.

But the main problem is, 3D light-boost is not working properly. I mean, the 3D glasses usually reduce the intensity when they're turned on, so screen has to be brighter when playing 3D content. But in my case, it is always brought down to 70%, and i can't change it to 100% when in 3D mode.

Also, when this 'brightness-lock' happens, there is slight flickering even in 120Hz mode. (although that can only be noticed by shaking hand against screen and seeing the strobe-effect). When the brightness-lock is not there, there is no backlight flicker even at 60Hz.

So all i want is following:
-Explanation of why this brightness problem occurs and way to over-ride the brightness settings in 3D-mode.

I don't mind if the brightness is locked in 3D-mode. But it should be at 100% full brightness, not 70-80%.

-The solution to my lid-blackout issue which i explained earlier.

DELL-Sujatha K · Answer

Hi udaynatt,

I am sorry for the inconvenience. I request you send me a private message with the system service tag to check the system details and assist you further.

Please click on my name and click Start Conversation to send me a private message.

udaynatt · Answer

i have messaged u my service tag number. Please help me out.

Locked Topics – Laptops General

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