Page 1 of 1

"stereo mix" under recording devices

Posted: Fri Oct 14, 2016 8:07 am
by bdub
win10 and the hp zbook 15 g3 laptops we sell do not provide a recording device "stereo mix". it was the same on win7, but there was a fix for it by editing some registry keys. this same fix doesn't work for win10, unfortunately. the audio chip is from Conexant. tried hacking chdrt.inf file in the hp driver package for audio too. no dice.
anybody out there find a way to enable stereo mix on Conexant chips in win10?

TIA.

Re: "stereo mix" under recording devices

Posted: Sat Jan 28, 2017 3:02 pm
by evasive
What is your registry hack for this? Maybe it needs a bit of massaging to fit into windows 10

Re: "stereo mix" under recording devices

Posted: Tue Feb 07, 2017 12:49 pm
by bdub
thanks for replying...
so, you need a certain Conexant driver package from hp, uh, including or before sp75820. I can get the driver version number if you need, but let's just say this fix doesn't work on windows 7 after they released a newer version of the audio driver.

three regfiles...
ControlSet001.reg, which contains...
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}\0000\Settings\EPattributes\EpSettings\StereoMixEnable]
"Enable"=hex:01
"MixAssocSeq"=hex:e0,e0
"MuteGainSettings"=hex:00,00

ControlSet002.reg, which contains...
[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}\0000\Settings\EPattributes\EpSettings\StereoMixEnable]
"Enable"=hex:01
"MixAssocSeq"=hex:e0,e0
"MuteGainSettings"=hex:00,00

Stereo Mix.reg, which contains...
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}\0000\Settings\EPattributes\EpSettings\StereoMixEnable]
"Enable"=hex:01
"MixAssocSeq"=hex:e0,e0
"MuteGainSettings"=hex:00,00

I had a better idea what all these did back when I posted this originally. I'm a little fuzzy now, except I know this fix, and others ive tried on multiple driver install versions have not worked on windows 10.

now, we also use windows 10 on a desktop platform that uses realtek audio chips, and we have yet to have this problem with those.
any questions, I'm happy to answer.

Re: "stereo mix" under recording devices

Posted: Tue Feb 07, 2017 1:14 pm
by evasive
It points at the MultiMedia Class for devices:
https://msdn.microsoft.com/en-us/librar ... 2147217396

It seems you don't need to mess in the registry this time:
https://answers.microsoft.com/en-us/win ... 23d84bc5bc

Provided you already removed the semicolons from the .inf file.