** Changed in: linux-oem-6.14 (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2100748
Title:
Disable Human Presence Detection on AMD SFH
Status in HWE Next:
New
Status in linux-oem-6.11 package in Ubuntu:
Invalid
Status in linux-oem-6.14 package in Ubuntu:
Invalid
Status in linux-oem-6.11 source package in Noble:
Fix Released
Status in linux-oem-6.14 source package in Noble:
Fix Released
Bug description:
[ 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, which has been in the linux-
next:
[PATCH 0/3] Adjust behavior for HPD sensor[1]
This introduces a new sysfs file
(/sys/bus/pci/drivers/pcie_mp2_amd/*/hpd) to toggle the HPD sensor,
and disables the HPD sensor by default. Users may enable it manually
by toggling the value.
[1] https://lore.kernel.org/linux-
input/[email protected]/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.
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