I have a computer with a SIS-Chipset that worked with previous versions of the ACPI-Patch, but doesn't work with the latest one.
(It is the second system i found recently that doesn't work and worked with older versions).
dmesg and lspci output are at
The important part is probably:
ACPI: Subsystem revision 20021022
PCI: PCI BIOS revision 2.10 entry at 0xfdb01, last bus=1
PCI: Using configuration type 1
tbxfroot-0305  Acpi_find_root_pointer: RSDP structure not found
ACPI: System description tables not found
tbxface-0066: *** Error: Acpi_load_tables: Could not get RSDP, AE_NOT_FOUND
tbxface-0116: *** Error: Acpi_load_tables: Could not load tables: AE_NOT_FOUND
ACPI: Unable to load the System Description Tables
PCI: Probing PCI hardware
PCI: ACPI tables contain no PCI IRQ routing entries
PCI: Probing PCI hardware (bus 00)
PCI: Using IRQ router SIS [1039/0008] at 00:01.0