PhillipJFy
New Head-Fier
- Joined
- Feb 18, 2014
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To everyone with a USB DAC that is having troubles on Windows 8 and 8.1 due to the Power Management "feature", I bring you a permanent solution. The only real caveat is that you must always use the same USB port as this setting is tied to just your device in that USB port. I personally use a Schiit Modi so just adjust as needed for your particular USB DAC.
*WARNING: THIS REQUIRES EDITING OF THE REGISTRY, READ ALL INSTRUCTION BEFORE ATTEMPTING*
1. Open Device Manager
2. Click "View"in the top bar of the open Device Manager window and select by connection type
3. Open the tree for your USB Host Controller and find your Schiit Audio Device (or otherwise)
4. Once found, right click to open the Context Menu and select "Properties"
5. Click on the "Events Tab"
6. In the "Information" pane will be text that will read something like:
"Driver Management has concluded the process to add Service usbaudio for Device Instance ID USB\VID_XXXX&PID_XXXX&MI_00\6&21084A46&0&0000"
7. The above string tells you the Vendor ID (VID), Product ID (PID), and Instance ID of your Schiit Audio Device (or otherwise)
8. Open the Registry Editor (regedit.exe) and navigate to "HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Enum\ USB"
9. Open the "USB" tree and find the VID & PID string that matches the one of your Schiit Audio Device, open this tree as well
10. Find the Instance ID that matches your Schiit Audio Device and open that tree, then click on "Device Parameters"
11. Double Click on the "EnhancedPowerManagementEndabled" to edit the value, set this value to 0 (zero) and click OK
12. Now close the Registry Editor and reboot your computer
I know this isn't the best write up ever but it does solve the problem. Like I said above, the only caveat is that you must always plug the Modi (or any other similar device) into the same USB port. Also, this works for all USB connected devices.
*WARNING: THIS REQUIRES EDITING OF THE REGISTRY, READ ALL INSTRUCTION BEFORE ATTEMPTING*
1. Open Device Manager
2. Click "View"in the top bar of the open Device Manager window and select by connection type
3. Open the tree for your USB Host Controller and find your Schiit Audio Device (or otherwise)
4. Once found, right click to open the Context Menu and select "Properties"
5. Click on the "Events Tab"
6. In the "Information" pane will be text that will read something like:
"Driver Management has concluded the process to add Service usbaudio for Device Instance ID USB\VID_XXXX&PID_XXXX&MI_00\6&21084A46&0&0000"
7. The above string tells you the Vendor ID (VID), Product ID (PID), and Instance ID of your Schiit Audio Device (or otherwise)
8. Open the Registry Editor (regedit.exe) and navigate to "HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Enum\ USB"
9. Open the "USB" tree and find the VID & PID string that matches the one of your Schiit Audio Device, open this tree as well
10. Find the Instance ID that matches your Schiit Audio Device and open that tree, then click on "Device Parameters"
11. Double Click on the "EnhancedPowerManagementEndabled" to edit the value, set this value to 0 (zero) and click OK
12. Now close the Registry Editor and reboot your computer
I know this isn't the best write up ever but it does solve the problem. Like I said above, the only caveat is that you must always plug the Modi (or any other similar device) into the same USB port. Also, this works for all USB connected devices.
