First, I thought it's maybe about my CodeVerbs and front audio kit. I removed front audio kit (not support HDA) from a cheap case, and I connected it to EP35-DS3P. I tested many kexts without issues. Finally, I built Extensions.mkext, including AppleSMBIOSEFI.kext, and tested some of my edited kexts. I found the problem as followings:
To solve the issue is to use SMBIOSResolver.kext or latest modded AppleSMBIOS.kext instead of AppleSMBIOSEFI.kext. However, if you are using SMBIOSResolver.kext and listening to music, you will hear unlike popup sound at the beginning.
While I am typing this reply and listening to music, my regular front kit is still connected to MOBO. I will test AppleSMBIOSEFI.kext and HDA front audio kit. ---> tested and got the same issues.
If you didn't tell me that you want to use AppleSMBIOSEFI.kext, I might not find out what cause is.