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Feature Request - implement EDID override

idata
Community Manager
32,443 Views

Hello,

it would be nice if the Intel Graphics driver would support overriding EDID information like described in this document from Microsoft:

http://msdn.microsoft.com/en-us/windows/hardware/gg487330 http://msdn.microsoft.com/en-us/windows/hardware/gg487330

Why is this needed?

In a common HTPC (multimedia PC) setup with a PC, AVR (audio video receiver) and a television, the EDID information stored in the receiver & television that is passed to the PC determines the video and audio capabilities like: supported resolutions, supported audio formats etc ..

The problem is that very often the system only "sees" the EDID information of the television, and not that of the receiver, and so you don't get support for audio formats like DTS, DTS-HD, Dolby TrueHD that are supported by the receiver ...

The latest Sandy bridge CPU and corresponding chipset support all these sound standards, but they often not useable cause of these EDID problems.

Actually it really does not matter what video card / integrated graphics you use, NVidia and AMD graphics have the same problem, but their drivers

allows people to override the EDID information like is described in the above linked document from Microsoft.

Please implement this stuff, shouldn't be that hard to do, for one of you senior driver programmers it's probably just a few hours of work ...

Thank you

Christian

1 Solution
Bryce__Intel
Employee
7,358 Views

Great news! This completes the platform support. These drivers enable the use of 3rd party EDID applications for internal and external panels on Intel platforms.

Products: 4th Generation (Haswell) - OS: Windows* 7, Windows* 8.1

https://downloadcenter.intel.com/download/26544/Graphics-Intel-Graphics-Driver-for-Windows-7-8-1-15-... Download Intel® Graphics Driver for Windows 7*/8.1* [15.36]

Products: 4th Generation (Haswell) - OS: Windows® 10

Products: 5th Generation (Broadwell) - OS: Windows* 7, Windows* 8.1, Windows® 10

https://downloadcenter.intel.com/download/26682/Intel-Graphics-Driver-for-Windows-15-40- Download Intel® Graphics Driver for Windows* [15.40]

Products: 6th Generation (Skylake) - OS: Windows* 7, Windows* 8.1, Windows® 10

Products: 7th Generation (Kaby Lake) - OS: Windows® 10

https://downloadcenter.intel.com/download/26669/Intel-Graphics-Driver-for-Windows-15-45- Download Intel® Graphics Driver for Windows* [15.45]

.:Bryce:.

I started discussion space to continue this topic. I'm locking out this thread as resolved. Thanks all for your input!

/thread/113612 Using 3rd party EDID apps to modify modes

View solution in original post

182 Replies
Allan_J_Intel1
Employee
4,727 Views

Hi there!

Your feedback is important to us and I thank you for taking the time to communicate this issue.

Thanks

Allan.

SHick1
Beginner
4,727 Views

I continue to experience this issue. When will intel support EDID Override?

idata
Community Manager
4,727 Views

Currently I am using the very expensive Gefen HDMI Detective Plus to do the job of constantly providing the same EDID info to the HTPC. However, overriding it with an INF file (for example generated by MonInfo) would be a much more elegant solution.

gbhj
New Contributor I
1,947 Views

allan_intel

can information about the following options available in the Intel driver be made available?

  1. fakeEDID
  2. OEM static mode
  3. creating custom DTD
Allan_J_Intel1
Employee
1,947 Views

Thanks for the request.

Allan.

idata
Community Manager
1,889 Views
TMill18
Novice
4,727 Views

Any progress on this? I'm really struggling to get my expansive HTPC to work properly with a connected Marantz AVR. A simple EDID override feature would help me greatly.

KHave
Beginner
4,727 Views

Well, this would be an easy thing for Intel fix which would fix a lot of negative experience with their products when used as HTPC. So looking forward to see this one closed soon.

JTerr5
Novice
4,727 Views

Intel: PLEASE STOP IGNORING THIS ISSUE!!! BOTH AMD AND NVIDIA ALLOW THIS. SO PLEASE GET YOUR BIG BOY PANTS ON AND ALLOW THIS FEATURE! HOLY SHIT!

I will NEVER buy another Intel product ever again because of this issues.

PB7
New Contributor I
4,727 Views

Great work ignoring this Intel.

RSyne
Beginner
4,727 Views

I also suffer from this issue. I purchased a very expensive Gigabyte Brix I4770R running Intel 5200 Iris Pro. I have this connected to an LG 5.1 amp that should play 5.1 and does via XBOX 360 and Virgin Media Cable Box. The LG amp is connected to an LG 42" TV that only supports 2 channel stereo and it's this restriction that is being picked up by the Intel card and causing windows 8.1 to restrict my sound to 2 channel.

I used to run an Acer Revo (NVIDIA ION) and this worked fine where I could set the sound to 5.1 in Windows.

Reading up on the issue it appears I am limited to using an expensive hardware splitter/switch that spoofs the EDID, running an optical cable to the amp (old school) , trying to hack the registry (really???), or waiting for Intel to implement what appears to be a MUST HAVE feature in their driver set. I can't believe it isn't part of it already.....

The upside is that you can force 5.1 in Netflix and the amp does pick up the audio stream but not all apps offer this functionality.

RSyne
Beginner
4,727 Views

O I forgot.... I could buy a new £1000 Sony TV that does support 5.1

*looks at the wife*

loldf
Beginner
4,727 Views

Seriously Intel. This is ridiculous. Add support for EDID override!

err... open source?

Does the hardware support the edid being injected via software???

loldf
Beginner
4,727 Views

Looks like the clone_update_edid has the capability of reading an EDID from one display and "cloning" it to another within the intel graphics driver...

hmm..z

static void clone_update_edid(struct clone *clone)

{

unsigned long nitems, after;

unsigned char *data;

int format;

Atom type;

if (XRRGetOutputProperty(clone->dst.dpy, clone->dst.rr_output,

XInternAtom(clone->dst.dpy, "EDID", False),

0, 100, False, False, AnyPropertyType,

&type, &format, &nitems, &after, &data) == Success) {

XRRChangeOutputProperty(clone->src.dpy, clone->src.rr_output,

XInternAtom(clone->src.dpy, "EDID", False),

type, format, PropModeReplace, data, nitems);

}

}

from xf86-video-intel-2.99.917/tools/virtual.c

one could say, import a known edid.bin and inject it into a screen? therefor forcing it to a particular mode..

any avid xf86 driver coders available?

loldf
Beginner
4,727 Views

1) Add OPTION_EDID_OVERRIDE to intel_options.h

2) Add OPTION_EDID_OVERRIDE to intel_options.c with "OverridEdid", OPTC_STRING, {0}, 0

more later.. come on Intel lets get this edid overriden! it looks like you've already written EDID cloning from one output to another... so it must be supported

idata
Community Manager
2,477 Views

It seems this is now possible in the linux driver, but still not working in Windows. I've tried two possible ways of doing this and neither one seems to work. One is to specify a custom resolution in the intel graphics control panel, and the other is to create an edid override in the windows registry. Neither one is working for me. The control panel always gives a message about "bandwith exceeded" when this is clearly not the case, and the intel driver seems to ignore the edid_override in the registry. In linux I just specify the modeline I want to xorg.conf or xrandr and this same hardware does exactly what I want. There's no way to do it in windows as far as I can tell.

Thanks

loldf
Beginner
4,727 Views

checkout the github.

https://github.com/ArakniD/IntelGraphics https://github.com/ArakniD/IntelGraphics

It now has a option in xorg.conf for;

Section "Device"

Identifier "Device 1"

Driver "intel"

Option "EDIDOverride" "/home/lucas/sony.edid"

EndSection

if the file doesn't exist it'll create it the first time assuming everything is connected OK.

the next time it'll load the file instead.. handy? ;0 I think so!

7776.574] (==) intel(0): Depth 24, (--) framebuffer bpp 32

[ 7776.574] (==) intel(0): RGB weight 888

[ 7776.574] (==) intel(0): Default visual is TrueColor

[ 7776.574] (**) intel(0): Option "EDIDOverride" "/home/lucas/sony.edid"

[ 7776.574] (II) intel(0): Output HDMI1 has no monitor section

[ 7776.574] (II) intel(0): Enabled output HDMI1

[ 7776.574] (II) intel(0): Output DP1 has no monitor section

[ 7776.574] (II) in

Now i'm still having an issue with a blank screen if I turn off the AVR and TV. I hope to resolve this with some further digging.

loldf
Beginner
4,727 Views

its 12:31AM and I must sleep... i've reset my AVR with the TV on and the screen came back up ok.. the screen was previously off but the audio came back on ok.

it would appear that its working ok now with an edid override option ;0

w00t

loldf
Beginner
4,727 Views
ROBERT_U_Intel
Employee
4,727 Views

All,

We are currently evaluating the addition of this feature. Please watch this thread for updates.

Thanks

Robert

Reply