Hi Hans, > On Oct 30, 2020, at 15:06, Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> wrote: > > After reboot, it's not possible to use hotkeys to enter BIOS setup and > boot menu on some HP laptops. > > BIOS folks identified the root cause is the missing _PTS call, and BIOS > is expecting _PTS to do proper reset. > > Using S5 for reboot is default behavior under Windows, "A full shutdown > (S5) occurs when a system restart is requested" [1], so let's do the > same here. I wonder if this can also solve "HID: i2c-hid: Put ACPI enumerated devices in D3 on shutdown" fixed. Kai-Heng > > [1] https://docs.microsoft.com/en-us/windows/win32/power/system-power-states > > Signed-off-by: Kai-Heng Feng <kai.heng.feng@xxxxxxxxxxxxx> > --- > kernel/reboot.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/kernel/reboot.c b/kernel/reboot.c > index e7b78d5ae1ab..7e5aa1f78693 100644 > --- a/kernel/reboot.c > +++ b/kernel/reboot.c > @@ -244,6 +244,8 @@ void migrate_to_reboot_cpu(void) > void kernel_restart(char *cmd) > { > kernel_restart_prepare(cmd); > + if (pm_power_off_prepare) > + pm_power_off_prepare(); > migrate_to_reboot_cpu(); > syscore_shutdown(); > if (!cmd) > -- > 2.17.1 >
