On Fri, 2008-11-14 at 09:22 +0800, H. Peter Anvin wrote: > Zhao Yakui wrote: > > I do the test as required. First the 0x02 is written to 0xCF9 I/O port. > > The return value by reading the 0xCF9 I/O port is 0x02. Then the 0x06 is > > written to the 0xCF9 I/O port. The screen becomes black but the box > > can't be rebooted. > > What is the value of the CF9 port before you do anything? The value is 0x0 before writing 0xCF9 I/O port. Thanks. > > -hpa -- 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