External monitor and Intel HD Graphic 4000 under Windows 10

Question

Level 1

15 points

External monitor and Intel HD Graphic 4000 under Windows 10

I'm trying to use an external monitor connected via thunderbolt to my macbook pro 13. I'm running Windows 10 under Bootcamp. My Macbookpro is a 13 half 2012. The problem is the external monitor remains black, it doesn't receive any signal Uninstalling the Intel driver the external monitor works fine. So I assuming the problem is in the driver itself.

Is the external monitor problem I'm experiencing a known issue? Is it a driver problem or are there some settings in Windows I don't understand? How can this problem be resolved?

I've also noticed under devices setup there is a exclamation mark near High Definition Audio controller, and in fact I get no audio.

Doesn't the Bootcamp Support Software install audio drivers?

Mabook Pro 13" half 2012

Windows 10 Professional

MacBook Pro, iOS 10.2.1, Windows 10

Posted on Jan 29, 2017 1:27 AM

Reply

Answer 1

Best reply

bredniolo Author

Level 1

15 points

Feb 1, 2017 9:55 AM in response to Loner T

Finally I can see through my monitor! 🙂

I've installed W10 using a DVD and everything went fine, installed bootcamp 6 driver, and updated via Windows Updater.

Audio is also working.

At present I have not noticed other problems.

Thanks Loner

Reply

Answer 2

Loner T

Level 9

59,471 points

Jan 31, 2017 11:03 AM in response to bredniolo

Yes, please. Can you also run the following two procedures after your remove the partition using BCA, and before you next attempt?

Reset the System Management Controller (SMC) on your Mac - Apple Support

How to reset NVRAM on your Mac - Apple Support

Reply

Answer 3

Loner T

Level 9

59,471 points

Jan 29, 2017 10:55 AM in response to bredniolo

If you are in OS X, and switch to Windows with the monitor connected, does the Windows Control Panel -> Displays detect the monitor? Do Detect or Identify work correctly? Older Macs do not allow 'hot-plugging' Thunderbolt connections.

Reply

Answer 4

bredniolo Author

Level 1

15 points

Jan 30, 2017 6:06 AM in response to Loner T

Opening control->panel display I see a blue monitor with a big "1" inside it.

If I click on detect it adds another smaller grey monitor with the label "not identified monitor" inside it.

If I select the small monitor "it becomes blue" and choose Identify I get a big 1 on the lower left corner of the macbook integrated monitor.

The label "not identified monitor" remains. Nothing else.

Sorry if those are not the exact Windows terms but I'm using the italian version...

P.S. If I choose "project on another monitor" in system settings I can choose between the various options (duplicate, extend, only external monitor) but I get nothing on the external monitor in any case.

Reply

Answer 5

bredniolo Author

Level 1

15 points

Jan 30, 2017 8:25 AM in response to Loner T

I don't see any labels on it...

Here are some shots where you can see the brand logo I think

https://www.dropbox.com/s/onw20imq6vqmubn/20170130_172043.jpg?dl=0

https://www.dropbox.com/s/pedwnkdfrjyivk0/20170130_172028.jpg?dl=0

Reply

Answer 6

Loner T

Level 9

59,471 points

Jan 31, 2017 10:25 AM in response to bredniolo

Your W7 installation previously was legacy BIOS/MBR. The 2012 Macs are not fully UEFI-compliant, so using an EFI installation does cause issues. Does the Audio in W10 work on your 2012 Mac?

What type of problems did you have with the non-EFI installation?

Reply

Answer 7

bredniolo Author

Level 1

15 points

Jan 31, 2017 10:29 AM in response to Loner T

No, as I said in my first post the audio doesn't work.

I don't remember the exact error, but it was during installation.

Should I give non-EFI installation another try and see if I still get problems?

Thanks Loner for all the help ➕

Reply

Answer 8

Loner T

Level 9

59,471 points

Jan 31, 2017 10:38 AM in response to bredniolo

Your error is most likely a GPT vs MBR error. If you can, can you try the BIOS installation of W10 and let us test your monitors. You will need to remove the current W10 installation using BC Assistant only.

Reply

Answer 9

bredniolo Author

Level 1

15 points

Jan 31, 2017 2:38 PM in response to Loner T

Ok, I've removed the partition using BCA

I've done the SMC Reset (without removing battery procedure)

I've done the NVRAM reset.

Created a new partition using BCA.

Booted through "Windows" instead of "EFI Boot"

https://www.dropbox.com/s/a2kafdnc0ycyrkf/20170131_233111.jpg?dl=0

This is what I get

https://www.dropbox.com/s/7n4i5li2a0hwr6q/20170131_233236.jpg?dl=0

The USB is a Kingston Datatraveler G4 16GB, it was created using BCA.

Reply

Answer 10

Loner T

Level 9

59,471 points

Jan 31, 2017 2:52 PM in response to bredniolo

A 2012 Mac will not support a USB3 Flash drive as a BIOS installer, because there are no USB3 drivers yet. Do you have a USB2 flash drive which is 8+ GB?

To check if your USB is USB2 or USB3, from the OS X side, look at the System Report -> USB with the USB connected. If the USB disk appears in High-Speed section and has 480Mbps as speed, it is USB2, if it shows Superspeed and has a speed of 5Gbps, it is a USB3.

Reply

Answer 11

Loner T

Level 9

59,471 points

Feb 1, 2017 6:07 AM in response to bredniolo

There is a method of adding USB3 drivers to the Windows installer as shown in this link . I have tested it and it does work properly with a USB3 flash drive. This does require access to a Windows PC.

Reply

Answer 12

Loner T

Level 9

59,471 points

Jan 29, 2017 1:56 AM in response to bredniolo

Are you using a Thunderbolt monitor, or a DisplayPort monitor? These are two different monitors. If it is an Apple monitor, then it is a Thunderbolt monitor.

Reply