_PLD in DSDT is declared as below:
Method (_PLD, 0, Serialized)
{
Name (PLDP, Package (0x01)
{
Buffer (0x10)
{
/* 0000 */ 0x81, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00,
/* 0008 */ 0x30, 0x1C, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00
}
})
CreateBitField (DerefOf (Index (PLDP, Zero)), 0x40, VIS)
If (LNot (And (PR2S (0x0D), PR2)))
{
And (VIS, Zero, VIS)
}
Return (PLDP)
}
The problem occurs @ CreateBitField (DerefOf (Index (PLDP, Zero)), 0x40,
VIS).
In ACPI Spec, Index is defined as below:
Syntax
Index (Source, Index, Destination) => ObjectReference
Arguments
Source is evaluated to a buffer, string, or package data type. Index is
evaluated to an integer. The reference to the nth object (where n = Index)
within Source is optionally stored as a reference into Destination.
An integer is 64bit long and its bit index is from 0 to 63; however, the
above statement tries to reference to bit 64 and therefore it out of
range. If bit 64 in PLDP is needed, it must be referenced correctly.
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https://bugs.launchpad.net/bugs/1264071
Title:
[Dell Inspiron 2350] Multiple HIGH / CRITICAL failures found in fwts
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