Just to add, the ACPI DSDT is not the best code I've seen:
1. The _OSC method spins around in a while loop and creates the CAPB
object many times, hence the warnings:
[ 0.246336] ACPI Error (dsfield-0143): [CAPB] Namespace lookup failure,
AE_ALREADY_EXISTS
and
[ 0.246537] ACPI Error (psparse-0537): Method parse execution failed
[\_SB_.PCI0._OSC] (Node f7010de0), AE_ALREADY_EXISTS
2. Method _BQC does not return the queried brightness level on if the
LEqual() test is not true:
Method (_BQC, 0, NotSerialized)
{
Divide (BRTL, 0x0C, Local0, Local1)
If (LEqual (Local0, 0x00))
{
Return (BRTL)
}
}
..this may affect the screen brightness querying.
3. Fields IDEP, IDES and IDE1 seem to extend out of the allowed region
spaces. Not good.
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Hibernate does not power off the machine
https://bugs.launchpad.net/bugs/595822
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