问题4搜索dsdt后发现UAR1设备但是没有if判断这两行
Device (UAR1)
{
Name (_HID, EisaId ("PNP0501") /* 16550A-compatible COM Serial Port */) // _HID: Hardware ID
Name (_UID, Zero) // _UID: Unique ID
Name (LDN, 0x07)
Method (_STA, 0, NotSerialized) // _STA: Status
{
Return (^^SIO1.DSTA (Zero))
}