Information handling system with consolidated external user presence detection
An information handling system includes a host device and multiple monitor devices. One of the monitor devices is configured as a parent monitor device, and the remaining monitor devices are configured as child monitor devices. The parent monitor device receives a user presence detect (UPD) status signal, and queries all of the child monitor devices for a current UPD status. In response to the queries, the parent monitor consolidates the current UPD status from each of the child monitor devices and the current UPD status of the parent monitor device. Based on the consolidated current UPD status and based on a UPD policy, the parent monitor device sets a current user status as a user absence or presence. In response to the processor being in a low power state and the current user status being the user presence, the patent monitor device provides a wake notification to the host device.
1. An information handling system comprising:
a host device including a processor; and
a plurality of monitor devices to communicate with the processor of the host device, each of the monitor devices including a different presence detect sensor, one of the monitor devices to be configured as a parent monitor device, and the remaining monitor devices to be configured as child monitor devices;
the parent monitor device to:
receive a user presence detect (UPD) status signal;
query all of the child monitor devices for a current UPD status;
consolidate the current UPD status from each of the child monitor devices and the current UPD status of the parent monitor device;
based on the consolidated current UPD status and based on a UPD policy, set a current user status as either a user absence or a user presence; and
in response to the processor being in a low power state and the current user status being the user presence, provide a wake notification to the host device.
2. The information handling system of claim 1 , in response to the processor being in a low power state and the current user status is the user absence, provide a low power idle command to the child monitor devices.
3. The information handling system of claim 1 , in response to the processor being in a run power state and the current user status is the user absence, provide a user absence notification to the processor.
4. The information handling system of claim 1 , in response to the wake notification, the processor to perform a wake process, and to initiate a login operation.
5. The information handling system of claim 1 , when the UPD policy indicates a low security level, the parent device to set the current user status as user presence based on at least one of the monitor devices detects a user.
6. The information handling system of claim 1 , when the UPD policy indicates a medium security, the parent device to set the current user status as user presence based on any two of the monitor devices detect a user.
7. The information handling system of claim 1 , wherein communication between successive monitor devices and communication between one or the monitor devices and the host device is via a universal serial bus (USB) communication.
8. The information handling system of claim 1 , wherein the monitor devices are connected in a daisy chain configuration.
9. A method comprising:
setting, by a processor of a host device, one of a plurality of monitor devices as a parent monitor device;
setting, by the processor, the remaining monitor devices as child monitor devices;
receiving, by the parent monitor device, a user presence detect (UPD) status signal;
querying all of the child monitor devices for a current UPD status;
consolidating the current UPD status from each of the child monitor devices and the current UPD status of the parent monitor device;
based on the consolidated current UPD status and based on a UPD policy, setting a current user status as either a user absence or a user presence; and
in response to the processor being in a low power state and the current user status being the user presence, providing a wake notification to the host device.
10. The method of claim 9 , further comprising:
in response to the processor being in a low power state and the current user status is the user absence, providing a low power idle command to the child monitor devices.
11. The method of claim 9 , further comprising:
in response to the processor being in a run power state and the current user status is the user absence, providing a user absence notification to the processor.
12. The method of claim 9 , further comprising:
in response to the wake notification:
performing, by the processor, a wake process; and
initiating a login operation.
13. The method of claim 9 , when the UPD policy indicates a low security level, the parent device to set the current user status as user presence based on at least one of the monitor devices detects a user.
14. The method of claim 9 , when the UPD policy indicates a medium security, the parent device to set the current user status as user presence based on any two of the monitor devices detect a user.
15. The method of claim 9 , wherein communication between successive monitor devices and communication between one or the monitor devices and the host device is via a universal serial bus (USB) communication.
16. The method of claim 9 , wherein the monitor devices are connected in a daisy chain configuration.
17. A non-transitory computer-readable medium including code that when executed performs a method, the method comprising:
setting one of a plurality of monitor devices as a parent monitor device;
setting the remaining monitor devices as child monitor devices;
receiving, by the parent monitor device, a user presence detect (UPD) status signal;
querying all of the child monitor devices for a current UPD status;
consolidating the current UPD status from each of the child monitor devices and the current UPD status of the parent monitor device;
based on the consolidated current UPD status and based on a UPD policy, setting a current user status as either a user absence or a user presence; and
if the processor is in a low power state and the current user status is the user presence, providing a wake notification to the host device.
18. The non-transitory computer-readable medium of claim 17 , wherein the method further comprises:
in response to the processor being in a low power state and the current user status is the user absence, providing a low power idle command to the child monitor devices.
19. The non-transitory computer-readable medium of claim 17 , wherein when policy indicates a medium security, the method further comprises:
setting the current user status as user presence based on any two of the monitor devices detect a user.
20. The non-transitory computer-readable medium of claim 17 , wherein communication between successive monitor devices and communication between one or the monitor devices and the host device is via a universal serial bus (USB) communication.