DTS DCH Driver for Realtek HDA [DTS:X APO4 + DTS Interactive]

[Lucky8]

It naturally opens the cert import wizard. Going forward with this process ends up in cert password input step.

 

[Ferather]

So you are not restricted, but for some reason (my guess Intel) you cannot install from the installer, very odd.

----

> Open Windows search and type 'cert' (you might need to translate), and click on 'Manage computer certificates'.
> Select 'Trusted Root Certificates' > 'Certificates' > Right click in the right empty area > Import.



> Press next, then Browse, at the bottom right (above open) press 'All Files', then select 'signed.pfx'.



> Password: P@ss0wrd > Next > Next. Do the same to 'Trusted Publishers'.

 

[Lucky8]

Manually import is allowed. That make sense.

All installed fine and yet, it doesn't make a difference in sound

Just to clarify: Disabling DSEnforcement make it work seemesly . Just here to know who the heck drives my computer sound . Isn't there a Windows equivalent to Linux's Pipewire? That would help. Visually help

 

[Ferather]

Hmm, shame I don't like Intel* and don't have an Intel PC to test this on, the certificate will make no difference in sound, it will just allow the driver to be installed without driver signing disabled.

Well at least you have it working. Bit puzzled, even all the PC's I've done over TeamViewer did not have this issue.


* Illegally tried to monopolise the CPU market to take out AMD. Intel Antitrust Rulings | AMD

----

Some thoughts, can you right click 'DTS DCH' in device manager and uninstall it, tick 'delete driver' wait for the device to disappear, then in Driver Store Explorer, remove all DTS 'Providers'.
Double click 'Install' in the DTS DCH driver folder, go through the installer and select 'Main' (M), once done, restart your computer and let me know if it now works.

It might be that because you installed the certificate after the driver, and it has not done something correctly.



You should see "Digital Signer: Ferather".

----

Note: The installer will install the certificate (normally), cleanup past installs of the DTS DCH driver (updating), install the driver(s) and add some optimizations to the DTS system.



----

Install options are (SPDIF based):

> Main: DTS APO4 (DTS:X) + DTS Interactive [Multichannel] on SPDIF.
> Alternative: DTS APO4 (DTS:X) * [Stereo] on SPDIF.

> DTS APO4 (DTS:X) on analogue in both cases.

* Requires the 'External Speakers' optional package to get the 'Speaker' form factor.

 

[Lucky8]

Yes, I have tried several times, always cleaning up everything. Also tried manually updating driver thorugh device manager. The only thing that makes a difference is actually disabling driver signature enforcement. Maybe Intel platform allows some extra policies for certificates to be accepted .
I may be curious but isn't it safer to use a selof created-self signed certificate on the host machine? I think that can be done with powershell so you can sign the driver the minute before it's being installed .

 

[Ferather]

You can create a certificate on demand as you said, but you cant sign the driver via prompt or powershell (to my knowledge) unless there is an .exe that can via command line.

I feel like Intel is up to no good again, but who knows. Not sure I can help you at this time.

 

[Bryan Ü]

Are you still trying to crack Dolby Access ?

I tried but failed,the service closes automatically.I am newbie, and am in mood of playing games like Apex legends.
@Ferather will continue after some month. Just be patience.

 

[Ferather]

We will see, I will certainly have a look over it with certain programs, not sure I will be able to do it with Intel.

:S

 

[Lucky8]

still lot of appreciation for what you did. I came here just to satisfy my curiosity and learned a lot. Thank you

 

[Ferather]

Its no problem, I was hoping to resolve the issue, I have had past messages even on Windows 10 about not being able to install the certificate.

 

[Ferather]

So the ALC S1220-A with Crystal Sound 3 is considerably better than my older ALC 889. By default the entire driver is working as it should, even in 32bit mode (analogue, DAC's).
The DTS APO4 is also working entirely (Win10), both stereo and multichannel, I am able to fully use all the stereo modes without the older APO*.

Everything working strait out of the box, I simply installed the driver as normal and that's all.


* Some devices need the older DTS APO to get stereo working.

----

I am using E-APO, I balanced the output dB for both analogue and digital, the difference is very minimal, where optical is still slightly better than conductive.
Again like with my ALC 889, even with a lossy codec on digital, its still slightly less lossy than conductive circuit (resistance, EMI).

The Crystal Sound 3 chip requires no software or driver to work, and seems to apply to digital (PCM DSP).

----

Note, some mobile phones use the headphones cable as an antenna for FM, just to show you.

 

[Lucky8]

qq

Its no problem, I was hoping to resolve the issue, I have had past messages even on Windows 10 about not being able to install the certificate.

I'm here if you need testing. My guess is that cert is OK but doesn't pass all steps in the chain validation of modern and up to date systems .

 

[Ferather]

Others are using this driver with Win11, as far as I know they are all ok, when I tested Win11 (I wait 1 year + for fully stable before upgrade) at first release all was working including the certificate.
Even before Win11, there where some people who where unable to install the certificate, I could find the posts. Unfortunately I have not had this issue myself.

Why go from a car that works perfectly (enough), to a car that's incomplete and has holes in the chassis.

----

I can even sign other custom drivers with my certificate and then install it, so in order to fix the issue, I need to be presented with it.



In this case I made a EDID override driver.

====

Post 1 has been edited slightly to make it easier for first time users. The instructions should now be a bit easier to follow.

 

[Lucky8]

I know. I know. It is just that some devices may fail to trust certificates that do not stick to hard guidelines when secure boot is enabled. Sorry that's on MS. Also, hardware lab kit got updated a couple of times starting with W10 2004 and W11. Cert deployment may need to meet special requirements on secure core compliant devices. Sadly, that is the trend so it may be worst as time goes.
I took a look at PS documentation and in theory you can sign an exe file using a cmdlet but the state of the certificate is still non trusted so regardless it will fail to install on systems that follows a strict cert policy . Years ago a user mode driver install still proceed with a warning but apparently you need the entire driver package to be trusted

 

[Ferather]

Indeed, and this is a new computer with a fresh install of Windows, where the certificate was made on my old PC. This PC has all the security features enabled (my old one did not support Win11).
Even with the certificate I made on my old computer, I can still sign drivers, files and so on that work with my current computer and Windows install.

The driver will work regardless of the signature, the Realtek files are still WHQL, its only really the .inf.

----

There might be another way to bypass this issue, but I am not sure yet. Windows not adding a certificate through its own .exe (comes with OS) is a bug.
Adding the certificate manually, and it still not validating is a major issue if you are an app developer (want to self sign).

Its my computer, if I want to self sign drivers, that's up to me, not some dictator.

 

[Lucky8]

Well, they ( MS ) need to balance the need of a strong default security ( for average user ) and a professional's workstation. In their defense, if you are a dev, you can always ( and should ) use test mode. But I got bro. I know what you mean with it.
Anyway I still consider disabling DSE to be an easy task. Specially for us, who come here being tech enthusiasts. Most people will stick to their default sound configuration . Not me of course. Hit me up if you need testing

 

[Ferather]

I will do, thank you and also for your time and report. Most custom or modded drivers are not signed and you would have to disable driver signing.
I still feel like its a bug somehow, since you can just bypass it by disabling driver signing enforcement, and skip certificates.

 

[purplenoice]

Test files for all your needs/doubt´s in various formats
Link : https://thedigitaltheater.com/dts-trailers/

Oh
edit :

 

[Hearick]

Test files for all your needs/doubt´s in various formats
Link : https://thedigitaltheater.com/dts-trailers/

Oh
edit :

You bought this Dolby Atmos or find a driver ?

 

[purplenoice]

You bought this Dolby Atmos or find a driver ?

You can see in the picture that it was not purchased, the trial has expired! I just did something to the system to trick it into still working
edit:
I just took the trial and tricked it into not expiring

 

[Ferather]

I take it people don't like Alan's version? I can spend time on it, but only if there is a benefit, and plus it means I have to support more, which I was trying to avoid.
Alan has shared his files, but I know its not 100% like the current official, I think older. Based on your evidence, a modded app might be all you need.

Do you get any spatial modes, or anything other than most just an EQ? If its mostly just an EQ on analogue, not sure I would bother.

 

[purplenoice]

I take it people don't like Alan's version? I can spend time on it, but only if there is a benefit, and plus it means I have to support more, which I was trying to avoid.
Alan has shared his files, but I know its not 100% like the current official, I think older. Based on your evidence, a modded app might be all you need.

Do you get any spatial modes, or anything other than most just an EQ? If its mostly just an EQ on analogue, not sure I would bother.

Yes, you are right about the driver, I prefer the original one. I was able to test Dolby Atmos as analog and everything works as the application and encoder should. You know me from my previous posts, I say again that I prefer analog sound, old school, I've been playing music for more than 30 years.

Edit:

Fortunately for me, I understand a little bit of code...

Dolby Atmos Immersive music Link : https://www.dolby.com/atmos-visualizer-music/

 

[Ferather]

Alright, I will try to put aside some time, I know a few of you want the original latest Dolby. I will probably never use it, so it will be for you guys.
Please be aware my response time, and the time I take will not be as fast as when I did DTS, I am quite busy these days.

 

[Hearick]

You can see in the picture that it was not purchased, the trial has expired! I just did something to the system to trick it into still working
edit:
I just took the trial and tricked it into not expiring

How did you tricked it ?

 

[purplenoice]

How did you tricked it ?

It does not matter what the application says, it is important that the encoder does not allow the application of the patch for locking. So I told the encoder to look elsewhere for the license..there's a trick. Hope I helped!?