Posted on the 20th of February and still no answer??

Anyway, I have the exact same problem on my new Inspiron 7567.

When I use the built-in UHD screen, everything works well (despite some lag when adjusting the size of applications such as Chrome or Windows Explorer, and blurry texts of some Windows applications such as the 'device manager'), however when I connect it through HDMI or DVI to an external screen the problems start:

- Abnormal lag in desktop environment

- A black screen when I try to play a video fullscreen (for example on YouTube/Netflix)

- Intel Graphics option disappear

I'm not an IT genius, but I've had some 'experts' looking at it but they have no clue what the issue is. Also reinstalled drivers of both the Intel and Nvidia cards.

Please Dell help us out, €1500 is a lot of money...

Did you solve this problem somehow? I have exactly the same issues with the same model. In addition: mine also stutters and freezes in rare cases even without an external monitor plugged in. Dell support told me to send the device back to them for repairs (warranty). Did you send it back?

I unfortunately never solved the problem, and to be honest, I think it's a problem at the hardware level that could be fixed with future BIOS updates. I ended up returning it and putting a little more money into the purchase and got an Alienware 15 R3 instead.

This Alienware model though still does not output video to the HDMI port at all times though. Not a huge deal, because what I was more concerned about was the stuttering in Windows. The only sure-fire way to fix the problem (in my case on the 7567) was to disable the Intel Graphics display adapter in Device Manager. That's not the intended, or proper way to run the laptop though. Users should not have to perform special steps just to get proper basic functionality in Windows.

To address some of the Blurry Text in dialogs and such - it's probably because Windows 10 likes to have a custom scale set in the display options. If you reduce the scale slider to 100% and log out/in again, text will be per-pixel crisp again. That can be problematic on the UHD screen though. Scaling gives you that non-native resolution look.

I also had the same problem with YouTube - if you maximized the screen, it would turn black.  Again, a display adapter/driver problem at that point. I didn't bother investigating that one further, other than trying out the latest available version of display adapter drivers from nVidia and Intel. Both Dell and Native drivers did not resolve that issue for me.

Ultimately, my problem was resolved by my sending it back for a refund and investing in a better laptop. This is in no means an acceptable answer to fixing the underlying problems that the 7567 has.  Now that I know that there are other people out there having the same problem, it could be an actual problem than just mine turning out to be a lemon. I hope that some attention is brought to this problem, because the 7567 is a great gaming-grade laptop, it's capable of being an affordable, powerful laptop, if some of these issues are resolved somehow.

I wanted to add that I too have exactly the same issues when it comes to Intel Graphics options and playing a video in full screen when connected via HDMI (black screen). Support doesn't seem to care.

I managed to solve these HDMI issues by reinstalling the Intel HID Event Filter Driver from the Dell website.

Unfortunately I still have other issues with this notebook like random USB disconnects despite having turned off "selective suspend" and "Allow the computer to turn off this device to save power".

Please Dell, can someone look into these issues?

Did that also, but without any results. Also updated BIOS already, but again, nothing.

Please Dell fix this

Same thing happens to mine. Apparently this happens to some alienware laptops too and the solution was to uninstall the intel graphics via control panel>add/remove programs.  I also noticed it comes back whenever intel graphics is automatically updated therefore you'll need to keep uninstalling it. I tried to find an explanation as to why this is happening since its wierd that updating intel graphics causes it. I basically just permanently set my network connection to "metered" to prevent it from updating.

As for the black screen when going full screen on youtube/netflix. Try disabling hardware acceleration on the browser you are using.

I had the same issue on 7567, the lag / stutter. I just use the built in display (i have the TN FHD panel)... it can easily be reproduced. On desktop, right click, Personalize, Background, Picture, and just click any wallpaper on there WHILE slowly moving the mouse pointer.  You'll see it get stuck and suddenly reappear to the moved location, and happens twice, like 2-3 seconds for the entire thing.

The weird thing about this, if some graphic image (ie. 3D of the Nvidia logo spinning) is moving at background, this does not happen.  So this looks like some driver issue of the built in Intel HD 630, or the laptop isn't able to fully use it.  I am unable to install Intel provided driver because it errors saying it has manufacturer supplied driver and that's the only one that can be installed.

Now the driver Dell provides was last updated Jan 2017 (six months ago) and there was nothing after that. For Intel driver, latest was like less than 2 weeks old, but cannot install that.  There was nothing I did with the laptop as its fresh out of box (2 days old), I even did a factory reset last night, so meaning, from the factory setup/image it already has that lag.  Its software, so it may not be something compelling for a return/refund, but I will try things first before going to Dell service route.

When my TV gets wall mounted this weekend I will connect it to HDMI to see if the posted issues above happen as well and will update here.

Have the similar issue.

Desktop has abnormal lag, especially when minimizing/maximizing browsers windows. In addition, mouse pointer seems like sticks to some link/tab/active area that is usually shown with "mouse over highlight effect" in UI.

Tried the following:

- to setup the latest (released on May 17) drivers from Intel - no changes

- to upgrade Bios to the latest version 1.0.5

- in Multiple displays configuration in Windows, if I switch from Extend this display to Show only on display 2 - experience becomes better, but during further interactions the issue may appear again

- installing the latest NVIdia or reinstalling all drivers from dell.com/support didn't help

- forcing Nvidia via control panel doesn't help

It's also strange that Windows shows multiple displays, while HD Graphics Control panel detects only built-in display and NVidia detects only display linked to HDMI, so it's not possible to setup multiple displays via NVidia Control Panel.

Besides that issue, the laptop itself is great, but it's impossible to use it with and additional display connected via HDMI due to the issue here.

Probably someone from Dell could provide some assistance.

After a lot of googling I realized the issue is not related to specific Dell's model, but to NVidia card and drivers support for Windows 10.

To fix the issue it's necessary to setup Creators Update for Windows 10 (build 1703)

and also setup the latest NVidia drivers from nvidia.com site (version 382.53 dated June 9, 2017), during install it's necessary to specify "clean setup" checkbox.

UPDATE: unfortunately, the issue has not been resolved and seems like with the latest drivers from nvidia it even got worse. Looks like nvidia card has several performance levels, when it runs on Level 3-4 the behaviour is smooth, but it always drops to level 0-1 fast and then the behaviour is sluggish. Was not able to find a switch to force constant Level 4 even when Maximum performance is setup in card preferences.

Ok now that I have a TV available, I had connected it to HDMI. During BIOS bootup there is no display on TV.  In Windows, I extended the display to the TV, no lags nor stutters, and can do general things well (haven't tried to game yet).  The Intel display driver also disappears when only the second screen is active.  Since I had activated the Nvidia GPU icon, I can see that it is the GPU being utilized by the TV (there is a process gfxv4_0.exe).

On the laptop screen, on Intel graphics control panel, display detection only sees built in display, not the TV. While on the NVIDIA Control panel, it can only see the TV (no built in display).

So at this point, it seems to me that once you plug in something at HDMI, the nvidia GPU is assigned to that and the intel GPU takes care of the built in. But since the nvidia is also active at the same time, it definitely does some of the graphics work in such a way that all is lag free (even the wallpaper changing / slideshow is flawless)... with only the built in Intel, that wallpaper changing stutters like what I said on my previous post above.

I would prefer the built in take care of everything, except of course when I want to game.  I had the latest nvidia driver, the latest intel driver provided by dell (which is NOT the latest from intel website), and the latest Win10 Home ver 1607 build 14393.1198 (last setup before the Creator Update... i am prompted to update but I didn't yet).

Aside from curiosity sake, there is not much drive for me currently to have the intel GPU run everything (except game), but once I have progress on this,I will update.

Have you solved your problem?

I am having lag when using HDMI output only and the sound (through HDMI monitor) is also "breaking" sometimes.

Have you solved your problem? I have exactly the same here using Dell from Brazil.

When we set to show only SECOND screen (HDMI), Windows get slow, lagging... 

If we Duplicate the screen (show on first and second), Windows gets to normal...

I have tried to disable Intel Graphics through Devices Manager and then the second Screen gets normal, but the first (notebook) screen is kept turned on with a DELL logo stuck (if rebooted).