FYI, we noticed the below changes on git://internal_merge_and_test_tree revert-a1ee92de67662da70886ec30ee7356ec2208af67-a1ee92de67662da70886ec30ee7356ec2208af67 commit a1ee92de67662da70886ec30ee7356ec2208af67 ("ACPI, PCI, irq: Do not share PCI IRQ with ISA IRQ") We found the following new message in kernel log. [ 8.716548] ACPI: No IRQ available for PCI Interrupt Link [LNKS]. Try pci=noacpi or acpi=off Thanks, Ying Huang