Intel (R) HD Graphics HDMI-Output stopped working

[MMahl2]

Hello,

I'm looking for a solution on the HDMI-Output problem for a couple of month now and wasn't able to fix it till now. Allmost tried every suggestion I found in Intel's communities or from other forums by Google searching!

For me it's important to get my 2nd monitor working back again, but it looks like I have to buy another computer with an external GPU that doesn't have those issues. Can't really believe, that Intel isn't able to provide their customers with a fix on an issue that is known for over a year now.

So here are my informations on what happened to my system:

I'm running an ACER Aspire Z5700 All-In-One Desktop with an Intel I5 660 CPU actually, which I have changed from the I3 550 CPU, because I thought it may fix the issue, but it doesn't. Have bought the system around 2 years ago and all was working fine. Then I decided to work with a 2nd monitor and took an ACER X223W for that, had to connect over HDMI -> DVI because monitor only has VGA and DVI-Input and the AIO has only one HDMI-Output. But that wasn't a problem, all was working fine, got signal on 2nd monitor, could change between clone or extended, had no problems while powering off/on, all worked like a charm, till I disconnected the HDMI-Cable one time for using the 2nd monitor to configure another computer. After this was done, I tried to reconnect to my AIO and the trouble begun. On my 2nd monitor I only got a black screen with a short "no signal" message, that monitor falls back to power-safe!

OK, what's going wrong now I asked myself, why the hell will no signal found. I tried to get a signal again with a rollback, nothing changed. I tried all available drivers, from Acer Support and all of the Intel drivers. I have updated the BIOS to latest and downgraded it, I bought new cables and adapters, nothing worked. Then I bought the I5 660 CPU around 3 weeks ago to give it a try but same result. Last thing I could do, was to format and try with a fresh install. F***, had to backup around 650 GB files, but I tried and horray nothing worked at all.

So, now we come to the part, that makes me sure, that it isn't a Windows 7 issue, it is definitive an Intel driver issue, because if I take same HDMI-cable, adapter and monitor and connect it to my son's computer, also running Windows 7 but with external GPU, then all is working fine again. Tested with an LCD-TV too, on my AIO no signal, on my son's computer it worked.

Of cause, now we could think the HDMI-Output-Port might not work, but I can't believe that, cause when either the 2nd monitor or LCD-TV is connected, they will shown in device manager, in Intels Control Panel and in Windows Control.

Here are some screens:

http://gyazo.com/ff66da54da29980069394f67fee8c6e4 http://gyazo.com/ff66da54da29980069394f67fee8c6e4

http://gyazo.com/6aa3a8434f906512f7d50363f74701e1 http://gyazo.com/6aa3a8434f906512f7d50363f74701e1

http://gyazo.com/9ea8df6c4df8bac001bbdaf31cf94074 http://gyazo.com/9ea8df6c4df8bac001bbdaf31cf94074

http://gyazo.com/2770a3bb59bd89a1b27ab29575512065 http://gyazo.com/2770a3bb59bd89a1b27ab29575512065

DxDiag and ICP-Diag are attached.

Maybe I got blind over all the time with trying to fix the issue, but I really don't know what else I could do or how to solve it, so I'll give it away to you with the hope someone may help me.

Sorry for my english, it isn't my native language, tried my best to describe all I had done.

[ROBERT_U_Intel]

Hi Michael

Thanks for the detailed description and information on the issue. Just based on what you are describing it sounds potentially like a hardware issue. However I have a couple of questions to help determine the cause.

Does the HDMI display work during POST or when you boot into Safe Mode?

Do you have access to another HDMI cable, preferably a High Speed HDMI cable? I know you mention the current cable works on your son's PC but it is something worth checking. Same with the HDMI --> DVI adapter.

Did the HDMI display work during the install of the OS?

Thanks

Robert

[MMahl2]

Hi Robert,

HDMI display doesn't work either during POST nor boot into Safe Mode!

But if I'm right, booting in Safe Mode will use a generic VGA-Driver which isn't able to give a HDMI-Output. Just tried and INTEL-Driver is shown, but won't work in Safe Mode. I can't test a VGA-Out to VGA-In, cause my AIO has no VGA-Port.

What I could try, to determine the cause, I could install an secondary OS based on Linux. That way we may find out if it either is a hardware issue, a driver issue or a OS issue. For me it looks like there is a handshaking issue between AIO and 2nd monitor.

To be honest, I really don't think the problem is caused by any HDMI cable or adapter, have changed both and both work fine on my son's system, so buying now a High Speed Cable would make no sense for me.

[ROBERT_U_Intel]

Hi Michael

I have to respectfully disagree with you, an HDMI display will function in safe mode, POST and BIOS setup, DOS, and OS install without drivers.

Another question, are you using a dual link or single link DVI adapter?

Thanks

Robert

[MNot]

Robert: i doubt it's a h/w issue... most likely it's a dev driver and HDMI issue, since my new i7-5600U had a very similar fault over its (acursed) miniHDMI port: I can use a 720p beamer in clone, extended and collage modes, but never again as single external display (after a failure weeks ago). OTOH, my 2560x1600 screens were never seen to work over the mHDMI, despite claims to the contrary in the literature.

The hours i wasted trying to debug the problem (Intel HD / HDMI / EDID) is likely to exceed the cost of my new fancy ultrabook - that's actually inferior to Thinkpads nearly a decade older ;-(

[lderr1]

HI Robert, Have very much the same problems Michael. All systems were go and one day decided to use the Samsung tv that I had used ok before on the hdmi output of my Inspiron 620. The no signal shows up on the tv and the computer will not auto detect the tv. Tried everything,cables,other tv,and etc. Its like I got an automatic intel update a year ago and it hasn't worked since. I use Intel (R) HD Graphics 2000. Its abult in system on the motherboard, I think.