On Sat, Jun 17, 2006 at 05:35:51PM -0700, Linus Torvalds wrote: > The thing that does work is to literally just set the SCI_ENABLE bit: > > acpi_set_register(ACPI_BITREG_SCI_ENABLE, 1, ACPI_MTX_DO_NOT_LOCK); > > after resume, _not_ the "acpi_enable()".
The ACPI spec says: "If this is an S2 or S3 wake, then the BIOS restores minimum context of the system before jumping to the waking vector. This includes: ... ACPI registers. SCI_EN bit must be set. All event status/enable bits (PM1x_STS, PM1x_EN, GPEx_STS and GPEx_EN) must not be changed by BIOS." So it seems like either we're doing something slightly wrong on putting machines to sleep which is resulting in them waking up without SCI_EN being set, or Windows unconditionally enables it and some hardware is just broken. Either way, it doesn't seem likely that it'll cause any harm. -- Matthew Garrett | [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
