7xGPU + Windows // modding AMD video driver is the answer

[hero18688]

Hi,OP.My rigs lost audio after implemented this reg mod.It acts as HTPC sometimes.Can you post one without disabling the audio?

[lbr]

Hi,OP.My rigs lost audio after implemented this reg mod.It acts as HTPC sometimes.Can you post one without disabling the audio?

You have 5+ GPUs in HTPC? ; )

You can edit mod reg file before importing it. For example delete all lines setting DP_DisableHBR2. That way maybe you will find the key affecting audio. Probably this one - DalNumSupportedHDMIConnections.

Since I don't use audio from GPUs and don't have any device which can use audio from GPU there is no way I can find which setting causes it.

[hero18688]

Hi,OP.My rigs lost audio after implemented this reg mod.It acts as HTPC sometimes.Can you post one without disabling the audio?

You have 5+ GPUs in HTPC? ; )

You can edit mod reg file before importing it. For example delete all lines setting DP_DisableHBR2. That way maybe you will find the key affecting audio. Probably this one - DalNumSupportedHDMIConnections.

Since I don't use audio from GPUs and don't have any device which can use audio from GPU there is no way I can find which setting causes it.

Thanks.problem solved

[vegasguy]

Is there any way to do this with Nvidia 750ti cards?

[lbr]

Is there any way to do this with Nvidia 750ti cards?

What is the issue with nVidia cards exactly?

[HoY]

This post hasn't been updated in a while I'm just wondering if you are still maintaining it? OP doesn't state if 14.7 R3 is supported, so I thought I'd ask, and if newer versions will be supported as they come out? I don't even know if newer versions than 14.6 help with any hash rates, but I'd like to find out! All my rigs are 6-7 card rigs tho

[lbr]

OP doesn't state if 14.7 R3 is supported

OP does state this, tho -

Supported driver versions and operating systems
Any Windows and any AMD driver version should be supported in theory.

Anyway, if you try it and it won't work, I'll take a look.

[Prelude]

OP doesn't state if 14.7 R3 is supported

OP does state this, tho -

Supported driver versions and operating systems
Any Windows and any AMD driver version should be supported in theory.

Anyway, if you try it and it won't work, I'll take a look.

It works perfectly with 14.7 RC3. Thanks for the great tool!

[OrientA]

Windows 8.1 64
4x AMD7990 - 8 GPU
Have no problems running on 14.4, 14.6 etc but i have 6 7990 Is there any way to start more than 8 gpu on windows 8.1. I have readed somewhere that this is driver issue! When i try to start the system it shows me error in ATIKMPG or something like this. Help if it is possible.

I cannot make more than 8 GPU work. I tried 3x7990+3x7970. It will crash the computer. Win 8 and 8.1 were used.

[hero18688]

Not compatible with 14.9.Please update.

[Eastwind]

GIGABYTE 990FXA UD3 motherboard, FX 8320, 4 X 2 GB RAM.
I tried prepatched drivers 14.4. Also 14.6 RC2 and patched it. Actually i have no problems running 4 X 7990 without any modded drivers. The problem comes when i install 5th 7990 which adds two more GPUs. Thes it installs driver and after restart when windows 8.1 is loading appears some kind of blue screen where is written that ATIKMPG of something like this file caused problem and windows will restart trying to fix this problem. It is always the same no matter which driver i use. Modded or not. Later i removed 5th 7990 and just disabled 2 of the cores. Then put again 5th VGA and windows started normally. When i try to enable 9th GPU windows crashes with the same blue screen with counter to restart trying to fix (atikmpag.sys)   Ok. Somebody tall me that windows have 8 GPU limitation which could not be removed. I think it is not true!!!
Today i installed two Nvidia750 Ti to check what is going on and there is no problem. 4 X 7990 which is 8 GPU and two Nvidia GPU was installed correctly and also mining at this moment! I will make screenshot later and will post it in topic! If somebody is familiar with AMD drivers please help to improve it if its possible AMD drivers to support 10 or more GPU.

I have same experience. I cannot make 9-10 AMD GPU work.

[lbr]

GIGABYTE 990FXA UD3 motherboard, FX 8320, 4 X 2 GB RAM.
The problem comes when i install 5th 7990 which adds two more GPUs. Thes it installs driver and after restart when windows 8.1 is loading appears some kind of blue screen where is written that ATIKMPG of something like this file caused problem and windows will restart trying to fix this problem.

And if no AMD driver is installed?
Have you tried adding more RAM?
Do you see BIOS on the monitor?

Anyway, if this is AMD driver issue, maybe I will be able to mod the driver, pm me.

Btw, what's ur motherboard revision?

[lbr]

Not compatible with 14.9.Please update.

Sure, however I need access to 6+GPU rig.
Mine are at remote(very) location, also they are equipped with IDE HDDs, and since modding driver requires a lot of reboots and sometimes rigs hang, it is too painfull for me.

[atp1916]

Still no success with more than 8 AMD GPU on windows. I think kernel file makes problem, but success with 4 X 7990 and two GTX 970 plus CPU mining - all 45 Mhs on X11 !!! 8 GPU limit per windows is MYTH. This is absolutely not true!!! These days i will buy pcie expander card and will try to add three more GTX 970 In windows 8.1 i did not connect any monitor like it was it windows 7. Everithing works perfect.

https://imageshack.com/i/exWBHEs3j

https://imageshack.com/i/kqcGXV1Hj

-------------------------------------------
windows 8 gpu limit
8 gpu limit
Maximum Gpus windows 8
Windows GPU limit
-------------------------------------------

As i understood problem is in these two files:

amdkmdag.sys   c:\windows\system32\drivers\atikmdag.sys
amdkmdap.sys   c:\windows\system32\drivers\atikmdap.sys

Very impressive.  Nice job.  I remember having issues with just 5 before this mod came out...

[Gumbork]

Windows 8.1 64
4x AMD7990 - 8 GPU
Have no problems running on 14.4, 14.6 etc but i have 6 7990 Is there any way to start more than 8 gpu on windows 8.1. I have readed somewhere that this is driver issue! When i try to start the system it shows me error in ATIKMPG or something like this. Help if it is possible.

Oh man, do you really need to run so many GPU on 1 motherboard...

[ScryptAsic]

Awesome, thanks for the modded driver.

[lbr]

amdkmdag.sys   c:\windows\system32\drivers\atikmdag.sys
amdkmdap.sys   c:\windows\system32\drivers\atikmdap.sys

atikmpag.sys

Code:

Probably caused by : atikmpag.sys ( atikmpag+88ba )

Code:

FAULTING_IP: 
atikmpag+88ba
fffff800`018298ba 488b80e0010000  mov     rax,qword ptr [rax+1E0h]

Code:

STACK_TEXT:  
ffffd000`20c07170 fffff800`01471e97 : 00000000`00000000 ffffe000`02694b80 ffffd000`20c07280 fffff802`96a9a7d2 : atikmpag+0x88ba
ffffd000`20c071a0 fffff800`015052f8 : 00000000`00000000 ffffd000`20c07280 00000000`00000000 00000000`00000c50 : dxgkrnl!DpiDxgkDdiLinkDevice+0x43
ffffd000`20c07200 fffff802`9670bf3d : ffffc8c3`4cc61db4 00000000`00000012 fffff800`01504584 00000000`00000000 : dxgkrnl!DpiAddDevice+0xd74
ffffd000`20c074f0 fffff802`96ac1d87 : 00000000`00000000 fffff800`01504584 ffffe000`0271d340 00000000`00000000 : nt!PpvUtilCallAddDevice+0x35
ffffd000`20c07530 fffff802`96a1579a : 00000000`00000002 ffffd000`20c076b0 00000000`00000000 ffffe000`00ff74e0 : nt!PnpCallAddDevice+0x63
ffffd000`20c075b0 fffff802`96a14ad7 : ffffe000`00ff74e0 ffffd000`20c07850 ffffe000`00ff74e0 ffffe000`00294b40 : nt!PipCallDriverAddDevice+0x6e2
ffffd000`20c07750 fffff802`96b1f2df : ffffe000`00185520 00000000`00000001 00000000`00000000 fffff802`96a06a46 : nt!PipProcessDevNodeTree+0x1cf
ffffd000`20c079d0 fffff802`966b9084 : 00000001`00000003 00000000`00000000 00000000`00000000 00000000`00000000 : nt!PiProcessStartSystemDevices+0x87
ffffd000`20c07a20 fffff802`9663e3cd : fffff802`966b8d34 ffffd000`20c07b50 00000000`00000000 ffffe000`63734943 : nt!PnpDeviceActionWorker+0x350
ffffd000`20c07ad0 fffff802`966e9664 : 00000000`00000000 ffffe000`0029a040 ffffe000`0029a040 ffffe000`00167040 : nt!ExpWorkerThread+0x2b5
ffffd000`20c07b80 fffff802`967586c6 : ffffd000`201d0180 ffffe000`0029a040 ffffd000`201dc200 00000000`00000000 : nt!PspSystemThreadStartup+0x58
ffffd000`20c07be0 00000000`00000000 : ffffd000`20c08000 ffffd000`20c01000 00000000`00000000 00000000`00000000 : nt!KiStartSystemThread+0x16

[adaseb]

amdkmdag.sys   c:\windows\system32\drivers\atikmdag.sys
amdkmdap.sys   c:\windows\system32\drivers\atikmdap.sys

atikmpag.sys

Code:

Probably caused by : atikmpag.sys ( atikmpag+88ba )

Code:

FAULTING_IP: 
atikmpag+88ba
fffff800`018298ba 488b80e0010000  mov     rax,qword ptr [rax+1E0h]

Code:

STACK_TEXT:  
ffffd000`20c07170 fffff800`01471e97 : 00000000`00000000 ffffe000`02694b80 ffffd000`20c07280 fffff802`96a9a7d2 : atikmpag+0x88ba
ffffd000`20c071a0 fffff800`015052f8 : 00000000`00000000 ffffd000`20c07280 00000000`00000000 00000000`00000c50 : dxgkrnl!DpiDxgkDdiLinkDevice+0x43
ffffd000`20c07200 fffff802`9670bf3d : ffffc8c3`4cc61db4 00000000`00000012 fffff800`01504584 00000000`00000000 : dxgkrnl!DpiAddDevice+0xd74
ffffd000`20c074f0 fffff802`96ac1d87 : 00000000`00000000 fffff800`01504584 ffffe000`0271d340 00000000`00000000 : nt!PpvUtilCallAddDevice+0x35
ffffd000`20c07530 fffff802`96a1579a : 00000000`00000002 ffffd000`20c076b0 00000000`00000000 ffffe000`00ff74e0 : nt!PnpCallAddDevice+0x63
ffffd000`20c075b0 fffff802`96a14ad7 : ffffe000`00ff74e0 ffffd000`20c07850 ffffe000`00ff74e0 ffffe000`00294b40 : nt!PipCallDriverAddDevice+0x6e2
ffffd000`20c07750 fffff802`96b1f2df : ffffe000`00185520 00000000`00000001 00000000`00000000 fffff802`96a06a46 : nt!PipProcessDevNodeTree+0x1cf
ffffd000`20c079d0 fffff802`966b9084 : 00000001`00000003 00000000`00000000 00000000`00000000 00000000`00000000 : nt!PiProcessStartSystemDevices+0x87
ffffd000`20c07a20 fffff802`9663e3cd : fffff802`966b8d34 ffffd000`20c07b50 00000000`00000000 ffffe000`63734943 : nt!PnpDeviceActionWorker+0x350
ffffd000`20c07ad0 fffff802`966e9664 : 00000000`00000000 ffffe000`0029a040 ffffe000`0029a040 ffffe000`00167040 : nt!ExpWorkerThread+0x2b5
ffffd000`20c07b80 fffff802`967586c6 : ffffd000`201d0180 ffffe000`0029a040 ffffd000`201dc200 00000000`00000000 : nt!PspSystemThreadStartup+0x58
ffffd000`20c07be0 00000000`00000000 : ffffd000`20c08000 ffffd000`20c01000 00000000`00000000 00000000`00000000 : nt!KiStartSystemThread+0x16

isn't this program related to having a modified vbios. Usually a undervolted bios that works in linux but not windows

[lbr]

isn't this program related to having a modified vbios. Usually a undervolted bios that works in linux but not windows

This file is part of AMD video driver.
When something is wrong with the hardware usually that's the driver showing as the reason of crashes/bsods.

In this case however probably the driver is causing crash cause it is buggy, or at least I hope that it is.

[btcluka]

Thanks a lot! It's work!