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What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_supported_type
Date: Apr 2021
KernelVersion: 5.13
Contact: "<perry.yuan@dell.com>"
Description:
Display which dell hardware level privacy devices are supported
“Dell Privacy” is a set of HW, FW, and SW features to enhance
Dell’s commitment to platform privacy for MIC, Camera, and
ePrivacy screens.
The supported hardware privacy devices are:
Attributes:
Microphone Mute:
Identifies the local microphone can be muted by hardware, no applications
is available to capture system mic sound
Camera Shutter:
Identifies camera shutter controlled by hardware, which is a micromechanical
shutter assembly that is built onto the camera module to block capturing images
from outside the laptop
Values:
supported:
The privacy device is supported by this system
unsupported:
The privacy device is not supported on this system
For example to check which privacy devices are supported::
# cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_supported_type
[Microphone Mute] [supported]
[Camera Shutter] [supported]
[ePrivacy Screen] [unsupported]
What: /sys/bus/wmi/devices/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_current_state
Date: Apr 2021
KernelVersion: 5.13
Contact: "<perry.yuan@dell.com>"
Description:
Allow user space to check current dell privacy device state.
Describes the Device State class exposed by BIOS which can be
consumed by various applications interested in knowing the Privacy
feature capabilities
Attributes:
Microphone:
Identifies the local microphone can be muted by hardware, no applications
is available to capture system mic sound
Camera Shutter:
Identifies camera shutter controlled by hardware, which is a micromechanical
shutter assembly that is built onto the camera module to block capturing images
from outside the laptop
Values:
muted:
Identifies the privacy device is turned off
and cannot send stream to OS applications
unmuted:
Identifies the privacy device is turned on,
audio or camera driver can get stream from mic
and camera module to OS applications
For example to check all supported current privacy device states::
# cat /sys/bus/wmi/drivers/dell-privacy/6932965F-1671-4CEB-B988-D3AB0A901919/dell_privacy_current_state
[Microphone] [unmuted]
[Camera Shutter] [unmuted]
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