On Tue, Apr 16, 2019 at 4:20 PM Ingo Molnar <mingo@xxxxxxxxxx> wrote: > I wanted to get a second opinion from the EFI folks for this whole > concept. On x86 we default to ACPI reboot on modern systems, and we > default to EFI reboot on modern EFI systems, via the > efi_reboot_required() method which keys off on acpi_gbl_reduced_hardware > to create a barrier for older ACPI systems. So if acpi_gbl_reduced_hardware is set, we are on a "modern EFI system", and EFI reboot is used. > It appears that Acer TravelMate X514-51T systems get marked as > 'acpi_gbl_reduced_hardware' which enables ACPI-reboot, but they require > EFI-reboot. We will double check, but in this case I believe the system is *not* marked as reduced hardware, which is why ACPI reboot is used. > Should we perhaps re-think the boundary between EFI-reboot and > ACPI-reboot systems? I.e. if the EFI runtime is enabled, shouldn't we > just use the EFI reboot method? I agree this is a good question. We also previously hit a similar issue for shutdown on Acer laptops which is still unresolved. https://marc.info/?l=linux-acpi&m=148857214431346&w=2 Daniel
