Public bug reported:
[ Impact ]
Some HP ZBook Ultra Mobile Workstations have a sensor to wake up the
system on human presence. This behavior is not always desirable (e.g.
during suspend tests), and currently there’s no way to disable it.
[ Fix ]
Cherry-pick the following patch series:
[PATCH 0/3] Adjust behavior for HPD sensor[1]
This introduce a new sysfs file
(/sys/bus/pci/drivers/pcie_mp2_amd/*/hpd) to toggle the HPD sensor, and
disable the HPD sensor by default. Users may enable it manually by
toggling the value.
[1] https://lore.kernel.org/linux-
input/20250228163153.2554935-1-supe...@kernel.org/T/#m3c0b58f458549da78986d1e5087c990099ca10cd
[ Tests ]
1. Suspend the system.
2. Move objects across the built-in camera. The system should not wake up.
3. Check camera functions normally.
[ Where the problems could occur ]
The worst case is the human presence sensor no longer works. If for some
reason the camera needs this sensor in order to function normally, then
this may cause regression in camera.
** Affects: linux-oem-6.11 (Ubuntu)
Importance: Undecided
Assignee: Leo Lin (0xff07)
Status: New
** Affects: linux-oem-6.11 (Ubuntu Noble)
Importance: Undecided
Assignee: Leo Lin (0xff07)
Status: New
** Also affects: linux-oem-6.11 (Ubuntu Noble)
Importance: Undecided
Status: New
** Changed in: linux-oem-6.11 (Ubuntu Noble)
Assignee: (unassigned) => Leo Lin (0xff07)
** Changed in: linux-oem-6.11 (Ubuntu)
Assignee: (unassigned) => Leo Lin (0xff07)
** Summary changed:
- Disable Human Present Detection on AMD SFH
+ Disable Human Presence Detection on AMD SFH
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https://bugs.launchpad.net/bugs/2100748
Title:
Disable Human Presence Detection on AMD SFH
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