it's due to missing elements inside DSDT bios configuration.
it's happening at least on Packard Bell imedia pv.u58 motherboard.
the board chipset is: NVIDIA GeForce 6150 SE and NVIDIA nForce 430
please share your DSDT.aml and or dsl in order to fig-out what's missing.
original BIOS ACPI files are attached.



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