I´m experiencing this issue with every driver after 17.2.1 including the new 17.9.1
GPU Model: Gigabyte Radeon RX 460
Make and Model of the display: Samsung SB23B300B
Secondary display: HD TV (HDMI)
Type of connection to the GPU: DVI-DVI
Cable Model Number: none
Display Adapters: none
Amplifier: If yes, which model number? none
When does the issue occur? After restarting the PC
My pc is a desktop using windows 7 x64. I have done the clean reinstall with DDU too.
OS: Windows 7 x64 Ultimate
CPU: Intel Core i3 4150
Motherboard: ASrock H81M VG4
Graphics: Samsung SB23B300B (1920 x 1080), Gigabyte RX 460 4GB
Current Driver Version: 17.9.1
However, I have found a way to bring back the AMD HDA device, but it only lasts until the next reboot:
1. Change the driver for the pci express port used by the video card to a version made by intel, the AMD HDA device appears again then disappears after rebooting.
2. Change back driver to version made by microsoft. HDA device re-appears the disappears after rebooting.
3. Do step 1 again.
Make sure you have the latest BIOS for your Motherboard. I believe what is happening is that your computer is going to the Default audio which belongs to your Onboard VGA on your motherboard. If you go to Windows Control Panel - Sound, Check the AMD as Default Audio device. Most likely your Default Audio Device is the Realtek Audio and not AMD HD Audio. I imagine that you have in your BIOS check marked Use Dual Graphics on Auto. I don't use a Motherboard with Internal VGA on it. So, I am just taking a stab here, if you checkmark the AMD HD audio as default, you will probably lose your internal VGA Realtek audio. Unfortunately, Only one HD audio can be "Default".
Please read the entire post and look at the pics i uploaded. The AMD HDA driver is not even present in the device manager, and if it is not present then it wont appear in the control panel playback device list. And no, the bios dual graphics setting is set to disable.
But it does not matter right now, i changed the pci bus driver by amd to the default supplied by microsoft and the amd hda device problem is gone.