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A number of AMD based Rembrandt laptops are not working properly in suspend/resume. This has been root caused to be from the BIOS implementation not populating code for the AMD GUID in uPEP, but instead only the Microsoft one. In later kernels this has been fixed by using the Microsoft GUID instead. The following series of patches has fixed it in newer kernels: commited470febf8("ACPI: PM: s2idle: Add support for upcoming AMD uPEP HID AMDI008") commit1a2dcab517("ACPI: PM: s2idle: Use LPS0 idle if ACPI_FADT_LOW_POWER_S0 is unset") commit100a573793("ACPI: x86: s2idle: Move _HID handling for AMD systems into structures") commitfd894f05cf("ACPI: x86: s2idle: If a new AMD _HID is missing assume Rembrandt") commita0bc002393("ACPI: x86: s2idle: Add module parameter to prefer Microsoft GUID") commitd0f61e89f0("ACPI: x86: s2idle: Add a quirk for ASUS TUF Gaming A17 FA707RE") commitddeea2c3cb("ACPI: x86: s2idle: Add a quirk for ASUS ROG Zephyrus G14") commit888ca9c795("ACPI: x86: s2idle: Add a quirk for Lenovo Slim 7 Pro 14ARH7") commit631b54519e("ACPI: x86: s2idle: Add a quirk for ASUSTeK COMPUTER INC. ROG Flow X13") commit39f81776c6("ACPI: x86: s2idle: Fix a NULL pointer dereference") commit54bd1e5487("ACPI: x86: s2idle: Add another ID to s2idle_dmi_table") commit577821f756("ACPI: x86: s2idle: Force AMD GUID/_REV 2 on HP Elitebook 865") commite6d180a35b("ACPI: x86: s2idle: Stop using AMD specific codepath for Rembrandt+") This is needlessly complex for 5.15.y though. To accomplish the same effective result revert commitf0c6225531("ACPI: PM: Add support for upcoming AMD uPEP HID AMDI007") instead. Link: https://lore.kernel.org/stable/MN0PR12MB61015DB3D6EDBFD841157918E2F59@MN0PR12MB6101.namprd12.prod.outlook.com/ Signed-off-by: Mario Limonciello <mario.limonciello@amd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.