Messages in this thread |  | | | Date | Mon, 15 Jan 2007 08:44:51 -0500 | | From | Jeff Garzik <> | | Subject | Re: ahci_softreset prevents acpi_power_off |
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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.
Jeff
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