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HDMI EDID issues with BeoVision 10

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kimhav
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kimhav posted on Mon, Jan 13 2014 9:26 PM

I've updated my old WD HD Live unit to an Intel NUC i3 Haswell unit which works flawless together with BeoVision 10 except from one thing; hdmi link breaks when switching between fullscreen (XBMC) and Windows (8.1) desktop.

The reason for this, after googling around a bit, is that when Windows switches screen resolution or switches between full screen and Windows desktop it seems that the HDMI connectivity breaks and hence the black screen which often shows up on most systems. What is lost here is actually the initial HDMI EDID handshake which is performed during a cold start of a system and as well when awaking the system from sleep mode. GPU vendors such as nVidia and ATI seems to support EDID_OVERRIDE which I so far haven't figured out whether Intel support or not; but within their own forum I get the feeling that they don't and after 45 minutes chat session with them today it seemed as it was the first time that, at least the agent which chatted with heard about this issues. The agent told me that the driver might support EDID OVERRIDE and I could try...  Long story short is that I have an an open ticket with Intel's 2nd line support so let see what they come back with as I couldn't get a clear answer from the 1st line helpdesk agent that I chatted with.

The idea with the EDID OVERRIDE is to ensure that the system, in this case the Intel NUC, is forced to keep the same resolution and frame rate all the time which seems to be the solution to ensure that the EDID information doesn't get invalid and loosing the HDMI link to the BeoVision.

There are other solutions such as using EDID emulators, which Gefen for example has and various version is available at eBay. Could work but want to avoid and it feel a bit odd to have to buy another piece of hardware to solve something that can be solved either with a Windows regedit hack or BeoVision firmware update which most likely won't happen.

So to the real questions; what is your experience with the EDID issue; are there any ways of handling this directly on the BeoVision 10? Any other suggestions?

 

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w5bno123
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I can recommend using the Gefen HDMI Detective Plus to solve any EDID issues caused by a third party product.
Millemissen
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Thanks for this nice tip Yes - thumbs up

MM

There is a tv - and there is a BV.

kimhav
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kimhav replied on Tue, Jan 14 2014 3:40 PM

Intel support seems to work quite fast and I did get a response from them during this afternoon;

"I double checked with the engineering department and I was told that the Intel graphics controller supports EDID Override; however we still do not support it or recommend it.

So you can override the EDID trough our graphics driver, but it will be on your own risk, please keep in mind that due to the fact that we do not support or recommend the EDID override, we do not provide any documentation or instructions on how to do it."

So it seems that the Intel HD drivers does support the EDID OVERRIDE after all so next things is to of course test without taking the system down which would not go down well with my spouse.

Or I just might go for the Gefen EDID emulator to play safe.

kimhav
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kimhav replied on Tue, Jan 14 2014 3:41 PM

Out of pure curiousity w5bno123; but what devices have you tested together with the Gefen EDID emulator with; HTPC's?

w5bno123
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Hi

We have mainly used them with STB's. My installers use them mainly and on third party screen/products. It is used with a BeoSystem 4 to an older screen say a BeoVision 4 that may not recognise EDID, this basically tricks the screen into 1080p. I can found out more from them if necessary, I just know it helps them out a lot!
StUrrock
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kimhav:

Out of pure curiousity w5bno123 ; but what devices have you tested together with the Gefen EDID emulator with; HTPC's?

As I recall B&O recommend an Atlona model which we have used with Humax and Virgin STBs.
kimhav
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kimhav replied on Wed, Jan 15 2014 9:22 AM

The Atlona HDMI Recorder and Hot Plug Emulator seems quite interesting solution as well as it includes the possibility of analyzing the EDID information which the unit capture. But it's kind of pricy as the price range around £200-£230. The Gefen EDID emulator goes for around €120-€150 depending on where you buy it. Then there is ConnectPRO TDMS-EDID Emulator which goes for around $40-$60; so quite a price span for EDID emulators.

DoubleU
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Any progress by now? Long shot, but did you also try the mini displayport?

 

I ordered the exact same NUC this week. Sold out everywhere here, so have to wait 1 or 2 weeks. I want to make it a dedicated mediaplayer, so no need for Windows. Plan is to run Openelec with XBMC. 

BeoMegaMan
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I could be mistaken, but wasn't there a settings in the customer service menu that would allow you to double buffer the HDMI input to prevent the picture loss? I could be thinking of the BV7 series though. 

Ah, you know... A little B&O here, a little there 

kimhav
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kimhav replied on Thu, Jan 23 2014 1:56 PM

DoubleU:
Any progress by now? Long shot, but did you also try the mini displayport? I ordered the exact same NUC this week. Sold out everywhere here, so have to wait 1 or 2 weeks. I want to make it a dedicated mediaplayer, so no need for Windows. Plan is to run Openelec with XBMC.

Well, no progress yet. Haven't tried to tweak the system using the override option due to that there is of course not much informatio to be found and second there is a limit how much time I'm willing to spend. As most others I just want this to work without too much fuzz.

But, yes, I did try the displayport as well but that didn't make any difference; same issue there as well and using Windows. Going with OpenELEC is another game and shouldn't cause the same problem as it keeps the same resolution all the time. OpenELEC was also by primary choice but due to that the currenty graphics drivers didn't or stil doesn't support the Intel HD Graphics 4400 (I couldn't get the system to play the videos proper and spent tweaking the settings) and 2nd as my spouse realized that this little mini PC was entering the house there was talk about Netflix which doesn't work yet going Linux (yes, there is two old plugins but neither works...). So hence there reason why I went for Windows 8.1 which I would totally avoud just for cause of it. But, for now, it does the work and my spouse is happy.

Worth mention is that the BV10 MCE PUC works really great together with the Intel NUC Haswell as it hasa CIR so you'll get full control of XBMC when using a Beo remote.

 

kimhav
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Answered (Not Verified) kimhav replied on Thu, Jan 23 2014 3:08 PM
Suggested by Bv7Mk3

BeoMegaMan:
I could be mistaken, but wasn't there a settings in the customer service menu that would allow you to double buffer the HDMI input to prevent the picture loss? I could be thinking of the BV7 series though.

Did check as well the customer service menu for double buffer hdmi input which I can't find anywhere. So guess that this option doesn't exist in the BV10.

 

Bv7Mk3
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Bv7Mk3 replied on Thu, Jan 23 2014 6:40 PM
@Beomegaman. Yep the double buffer was in the bv7 mk3 onwards I had to change it to use the projector out as would not handshake to the projector when useing the built in dvd.

When I changed it in the service menu all was ok.

Had to do the same for mk1 7-55 but not the mk2 7-55 which I now have.
DoubleU
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kimhav:

Going with OpenELEC is another game and shouldn't cause the same problem as it keeps the same resolution all the time. OpenELEC was also by primary choice but due to that the currenty graphics drivers didn't or stil doesn't support the Intel HD Graphics 4400 (I couldn't get the system to play the videos proper and spent tweaking the settings)

Thanks for sharing that. So for now it's best to let XBMC run on Windows. Right?

w5bno123
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DoubleU:

Thanks for sharing that. So for now it's best to let XBMC run on Windows. Right?

Why don't you run XBMC on a jail broken Apple TV
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