Symptoms

Dell computers using an 11th generation (Tiger Lake or Tiger Lake H) Intel Core mobile processor may experience no USB speaker audio when it is connected to Dell MH3021P Speakerphone. If the Dell MH3021P Speakerphone remains connected to the computer for more than 2 minutes, it may cause the USB host controller bus to hang up. This can potentially result in the loss of other USB devices connected to the computer. This will then cause these issues: The Audio Device is Lost, the Dell MH3021P Speakerphone will not appear under the Taskbar Volume bar. Possible loss of connection to Bluetooth devices due to the Bluetooth module losing communication to the host computer (as the USB host controller hang-up). Affected Models: Alienware m15 R6 Alienware x15 R1 Alienware x17 R1 Dell G15 5511 Inspiron 13 5310 Inspiron 14 5410 2-in-1 Inspiron 14 5410 Inspiron 14 5418 Inspiron 15 3511 Inspiron 15 5510 Inspiron 15 5518 Inspiron 15 7510 Inspiron 16 7610 Inspiron 5400 All In One Inspiron 5401 All In One Inspiron 5406 2-in-1 Inspiron 7506 2-in-1 Inspiron 7700 All In One Inspiron 7706 2-in-1Latitude 3320 Latitude 3420 Latitude 3520 Latitude 5320 Latitude 5420 Latitude 5421 Latitude 5430 Latitude 5430 Rugged Latitude 5520 Latitude 5521 Latitude 5530 Latitude 7320 Latitude 7320 Detachable Latitude 7330 Rugged Extreme Latitude 7420 Latitude 7520 Latitude 9420 Latitude 9520OptiPlex 3090 Ultra OptiPlex 7090 Ultra Precision 3560 Precision 3561 Precision 5560 Precision 5760 Precision 7560 Precision 7760 Vostro 13 5310 Vostro 14 5410 Vostro 15 3510 Vostro 15 5510 Vostro 15 7510 Vostro 3400 Vostro 3420 Vostro 3520 XPS 13 9305 XPS 13 9310 XPS 15 9510 XPS 17 9710 Affected Operating Systems: Windows 11 21H2Windows 10

Cause

The Intel Smart Sound Technology (Intel SST) driver is installed on computers with a Tiger Lake or Alder Lake processors. For information about how to identify the Intel processor generation, reference: How to Identify the Intel Core or AMD Ryzen Processor Generation Intel Smart Sound Technology is an integrated audio digital signal processor (DSP) built to handle audio, voice, and speech interactions. Intel Smart Sound Technology enables the audio USB offload from the CPU to the Intel DSP. Computers running any other processor other than the Intel 11th or 12th generation Tiger Lake or Alder Lake CPU are not affected by this issue. The problem is caused by the failure to disable Intel SST Audio offloading when it should have been disabled.

Resolution

Intel Smart Sound Technology Change the audio device settings. Right-click the "Start" button and then click "Run."Type "devmgmt.msc" and then press "Enter."Right-click "Intel Smart Sound Technology for USB Audio" and then select "Disable" device. Back to Top

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