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    SubjectRe: ahci_softreset prevents acpi_power_off
    Tejun Heo wrote:
    > Arjan van de Ven wrote:
    >> I'd be interested in finding out how to best test this; if the bios is
    >> really broken I'd love to add a test to the Linux-ready Firmware
    >> Developer Kit for this, so that BIOS developers can make sure future
    >> bioses do not suffer from this bug...
    > As reported, this is almost a butterfly effect. ->softreset method is
    > only used during initialization and error recovery of ATA devices which
    > has almost nothing to do with the rest of the system. This is almost
    > like 'changing my mixer input to line-in makes power off fail'. (it's
    > more related due to ATA ACPI stuff and maybe that's why this happens but
    > I'm trying to make a point here.)

    It's quite possible that the BIOS in question wants AHCI in some
    specific state at poweroff.


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      Last update: 2007-01-15 15:45    [W:0.020 / U:4.624 seconds]
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