How to activate Dual screen?

[Martin Gorbush]

Your problem description is vague and without details. Could you write which 24″ screen you are using and how it is connected to the Cube tablet (HDMI/DVI/USB)?

I tried connecting second display to this tablet through HDMI and I must say that sometimes it might be problematic because Cherry Trail Atoms have problem with enabling HDMI output when they didn’t detect display. For me it mean that I have to connect another device to my HDMI switch which will resume my monitor from suspend state and only then tablet can send output signal to second screen. You can read about this problem on Intel forum connected with ATOM NUC and what difficulties people are facing when trying to use them “headless” or with HDMI switch. Similar problem should occure when you connect display with many inputs using port which isn’t configured as default on that device.

P.S.
I realy didn’t need to install any drivers for external display. Windows system only used its default inf(ormation) file for “P&P monitor”.

[Armand TEXIER]

Ok, i’ll try to be clear (not english native :D)

When i plug my mini HDMI on the tablet and on my display (24′ AOC display, actually work perfectly with my NUC intel on Elementary OS), the led switch on green then orange with no signal.

So i’m trying to install newest drivers intel HD graphics : and what’s happen is very strange, during installation, my display signal is ok, i have the dual screen perfectly…but if i reboot my tablet, the signal disappears again…

For a test, i’m trying to downgrade drivers : same problem, i’m trying to upgrade drivers : same problem. Even when i put it in sleep, the signal disappears.

Keep my tablet on after the drivers installation to have the dual screen is not really a solution xD

I’m clear or need more explainations? I do not really know how to be more precise…

Best regards

[Martin Gorbush]

Armand TEXIER wrote:

So i’m trying to install newest drivers intel HD graphics : and what’s happen is very strange, during installation, my display signal is ok, i have the dual screen perfectly…but if i reboot my tablet, the signal disappears again…

That description almost perfectly reminds me about problem with HDMI display on Intel Atom x3/x5 (Cherry Trail) platform. One solution proposed by Intel staff was to uninstall Intel driver and use that which came with the system (not with Windows Update). That’s why your display became powered on when you reinstall GPU driver during which system driver is used and then it stays on even when newer driver is fully loaded. But when you reboot with that driver installed then display isn’t detected and is not woken up from suspend. You can try to change external display settings (Win + P) but it shouldn’t help.

What NUC model do you have and which opeation system it has (Windows 8.1 or Windows 10)?

Armand TEXIER wrote:

Even when i put it in sleep, the signal disappears.

I experienced this problem. Without another active source connected to my HDMI switch I could not get to use external display from this tablet. That is really sad and disappointing. This is first device when I encountered such a problem. I have some suspicions that my recently updated to Windows 10 home PC with Haswell CPU might have similar problem because right now I’m unable to use second display from internal GPU. Only discrete GPU is working. Few months ago I didn’t have such difficulties. I will investigate further.

[Armand TEXIER]

I have the Intel NUC 5PPYH  8go ram and Elementary OS, very good product, fanless, no over heat and almost no noise (except my hd, but i say it purrs only).

Thanks for answers about my problem, I will try the solution you gave me but in my tests I think drivers will reinstall automatically ( it gives me the impression that they are permanently fixed ). Otherwise I’ll look different drivers that could prevent it and force in the devices manager.

It’s weird, i hope there is a solution to fix it…

Thanks for all

Best regards

Aro

[Martin Gorbush]

Armand TEXIER wrote:

I have the Intel NUC 5PPYH 8go ram and Elementary OS

Nice device but it has a little different CPU and GPU. What’s more I should come with Windows 8.1. Did you updated it to Windows 10? If I remember correctly this display problem is only connected with newer Windows.
Do not try to force (disable) any device in device manager or you will risk loosing Windows system. You might try to uninstall current driver and then to prevent installing new one through Windows Update you can disable this service. But this solution has many drawback. Standard Windows driver doesn’t support many features of this integrated GPU and disabling Windows Update might compromise your security especially in long run.

P.S.
I searched Internet to find some more about this problem and found possible solution. It require HDMI cable with just a single link. But it might be hard to gather information which cable you have or are going to buy :(.

[Armand TEXIER]

Martin Gorbush wrote:

Did you updated it to Windows 10?

The Cube Iwork 10 cames with W10, no update to do (french online shop, vers fast delivery and very good technical support, products are tested before they send it).

Ok for the advice : not try to force ^^

Very sad if the problem is only with W10 🙁

[Martin Gorbush]

I know that Cube iWork 10 comes with W10. I was asking about your NUC 5PPYH.

It seems that this problem with detecting HDMI/DVI display connected to Intel GPU is quite common especially on Windows 10.

[Armand TEXIER]

Martin Gorbush wrote:

I was asking about your NUC 5PPYH.

Oh, sorry, no, it’s Linux on my NUC (Elementary OS, Ubuntu 14.04). I bought the Iwork 10 to play during travels, mix with virtual DJ (with fun, not pro), read some ebooks and i buy a stylus to draw with it…

[Armand TEXIER]

Martin Gorbush wrote:

It seems that this problem with detecting HDMI/DVI display connected to Intel GPU is quite common especially on Windows 10.

hahaha, the Xionic answer is epic : “I solved the problem: i sold the intel-**** and went back to AMD. Thank you very much, intel.” XD

It’s a little bit scary…apparently intel has no solution…

[Martin Gorbush]

Yes it isn’t funny :(. My current solution when I want to use external display with this tablet is to connect Toshiba video camera to my HDMI switch. When that equipment outputs signal to my monitor then I can enable this function on tablet also.

Note that I use another piece of equipement inside HDMI connection between display and cube tablet. I didn’t try to connect this tablet directly yet. Till yesterday I thought that this HDMI switch is the culprit. After reading about your problem I’m almost sure that this defect is much more common. Besides when you have multiple inputs in your monitor/TV then basically you have something similar to HDMI switch there.

[Martin Gorbush]

Armand TEXIER wrote:

hahaha, the Xionic answer is epic : “I solved the problem: i sold the intel-**** and went back to AMD. Thank you very much, intel.” XD It’s a little bit scary…apparently intel has no solution…

I just found that when you connect external power source to this tablet then it has less problems with discovering external display connected to HDMI port.

If that solution isn’t compelling to you I’m trying to use devcon tool in batch file which should disable and after short time activate GPU driver. This method seems to work on my PC. Right now I’m experimenting on my desktop PC and when I will be sure this script will work flowlessly I will try to us it on my tablet.

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