root@kgentoo ~ # cat /proc/acpi/debug_level
Description                     Hex        SET
ACPI_LV_ERROR                   0x00000001 [*]
ACPI_LV_WARN                    0x00000002 [*]
ACPI_LV_INIT                    0x00000004 [*]
ACPI_LV_DEBUG_OBJECT            0x00000008 [*]
ACPI_LV_INFO                    0x00000010 [*]
ACPI_LV_INIT_NAMES              0x00000020 [*]
ACPI_LV_PARSE                   0x00000040 [*]
ACPI_LV_LOAD                    0x00000080 [*]
ACPI_LV_DISPATCH                0x00000100 [*]
ACPI_LV_EXEC                    0x00000200 [*]
ACPI_LV_NAMES                   0x00000400 [*]
ACPI_LV_OPREGION                0x00000800 [*]
ACPI_LV_BFIELD                  0x00001000 [*]
ACPI_LV_TABLES                  0x00002000 [*]
ACPI_LV_VALUES                  0x00004000 [*]
ACPI_LV_OBJECTS                 0x00008000 [*]
ACPI_LV_RESOURCES               0x00010000 [*]
ACPI_LV_USER_REQUESTS           0x00020000 [*]
ACPI_LV_PACKAGE                 0x00040000 [*]
ACPI_LV_ALLOCATIONS             0x00100000 [*]
ACPI_LV_FUNCTIONS               0x00200000 [*]
ACPI_LV_OPTIMIZATIONS           0x00400000 [*]
ACPI_LV_MUTEX                   0x01000000 [*]
ACPI_LV_THREADS                 0x02000000 [*]
ACPI_LV_IO                      0x04000000 [*]
ACPI_LV_INTERRUPTS              0x08000000 [*]
ACPI_LV_AML_DISASSEMBLE         0x10000000 [*]
ACPI_LV_VERBOSE_INFO            0x20000000 [*]
ACPI_LV_FULL_TABLES             0x40000000 [*]
ACPI_LV_EVENTS                  0x80000000 [*]
--
debug_level = 0xFFFFFFFF (* = enabled)
root@kgentoo ~ #