https://bugzilla.kernel.org/show_bug.cgi?id=209565
Bug ID: 209565
Summary: AMD modern standby is not supported on 4000 series
laptop
Product: ACPI
Version: 2.5
Kernel Version: 5.8.13
Hardware: x86-64
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: Power-Sleep-Wake
Assignee: acpi_power-sleep-w...@kernel-bugs.osdl.org
Reporter: crab2...@gmail.com
Regression: No
Created attachment 292889
--> https://bugzilla.kernel.org/attachment.cgi?id=292889&action=edit
ACPI dump of elitebook 845 G7 (search device PNP0D80)
Kernel does not support modern standby on AMD platform. And some vendors such
as HP refused to add a switch in BIOS to bring S3 back.
I just buying a new HP Elitebook 845 G7 and there is no way for me to get the
suspend & resume working.
It seems that AMD is using a different approach to support modern standby and I
can't find any public documentation about their interface. Their UUID in _DSM
is different to intel's and that is obviously not supported by the kernel.
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