[Bug 216574] New: Hybrid System Suspend broken HP EliteBook 845 G8 (a.k.a. Hybrid Sleep / s2both) (s2idle Notebook)

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=216574

            Bug ID: 216574
           Summary: Hybrid System Suspend broken HP EliteBook 845 G8
                    (a.k.a. Hybrid Sleep / s2both) (s2idle Notebook)
           Product: Drivers
           Version: 2.5
    Kernel Version: 6.0
          Hardware: AMD
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Platform_x86
          Assignee: drivers_platform_x86@kernel-bugs.osdl.org
          Reporter: kolAflash@kolahilft.de
        Regression: No

Created attachment 302984
  --> https://bugzilla.kernel.org/attachment.cgi?id=302984&action=edit
kernel log for hybrid sleep with s2idle: v6.0

Hybrid Sleep isn't working on the HP EliteBook 845 G8 Notebook.
Hybrid Sleep is documented here as "Hybrid System Suspend":
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/Documentation/admin-guide/pm/sleep-states.rst?h=v6.0.1#n220

uswsusp called this s2both.
(uswsusp is deprecated, but "Hybrid System Suspend" is currently supported by
the kernel if I don't get the documentation wrong)

This bug is forked off from:
https://bugzilla.kernel.org/show_bug.cgi?id=216516#c34



I initiate Hybrid Sleep this way:
echo suspend > /sys/power/disk
echo disk > /sys/power/state

But the system doesn't correctly enter Hybrid Sleep by activating s2idle.
Instead the system seems to do just a hibernation to disk.
So the system simply shuts down completely. At power on it resumes from
swapfile.

Correct behaviour would be to write the memory to swapfile (like hibernation to
disk), but then enter s2idle.
(the idea behind hybrid sleep is to prevent data loss if the battery is getting
drained while being in some suspend to memory)



The EliteBook 845 G8 (usually) only supports "s2idle" and no "deep" S3
mem_sleep mode.
See: https://bugzilla.kernel.org/show_bug.cgi?id=216516#c5

Using "systemctl start hybrid-sleep.target" yields the same result.
Please see attached dmesg output.

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