Hello all, In the 2.6.9 changelog It was written that : "ACPI_OS_NAME was removed from the OS-specific headers. The default name is now "Microsoft Windows NT" for maximum compatibility." Regarding the lastest git repository, this is still the case. I was wondering if this sentence is always true since. I was said that Microsoft Vista needs a better ACPI implementation in bioses, so I've been decompiling several DSDT from various vendors (sony, asus) to check. I found several things. First, Vista sounds to be known as "Windows 2006" in the DSDT, but vendors also includes some Linux stuff in it like If (\_OSI("Linux")) {} So on recent hardware could it be interesting to use Windows 2006 or Linux as default ACPI_OS_NAME ? Or could the "Linux" presence in the dsdt table could be detected for overriding the default settings ? I know we can override manually the ACPI_OS_NAME but this will be used by very few as "normal" users don't know what that means. So if autodetection is possible, could this improve hardware support/stability ? Does Win2K ACPI_OS_NAME is still a good choice ? I have to admit that I'm not a developer, so maybe ACPI_OS_NAME isn't so important. I was just wondering on how this parameter can affect linux's hardware detection. Sincerely, Erwan Velu - To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html