As suspected, the \_SB_.PCI0.HEC1.TCOS and \_SB_.PCI0.HEC2.TCOS
OperationRegions are just reserving the DMISCI_STS:
OperationRegion (TCOS, SystemIO, 0x0464, 0x02)
Field (TCOS, ByteAcc, NoLock, WriteAsZeros)
{
Offset (0x01),
, 1,
DSCI, 1
}
And \_SI_.SIOR:
OperationRegion (SIOR, SystemIO, GPBS, 0x30)
Field (SIOR, ByteAcc, NoLock, Preserve)
{
Offset (0x0C),
, 27,
LEDW, 0,
Offset (0x18),
, 27,
BLNK, 1
}
this defines the LEDW and BLNK LED GPIOs which are written to in
firmware by _SST (System Status) ACPI controls.
The lpc_ich driver allows these ports to become accessible via port I/O
from userspace and since it shares these with the ACPI OpRegion
reservations one sees the messages. One can either:
1. Ignore the warnings since they are just drivers complaining that regions are
being shared
2. Blacklist the lpc_ich driver
3. Use acpi_enforce_resources=lax to be less restrictive in the region sharing
As it stands, you have several options, personally, I would just ignore
the warnings.
** Changed in: linux (Ubuntu)
Status: Incomplete => Won't Fix
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https://bugs.launchpad.net/bugs/1181889
Title:
After installing ubuntu12.10 x64, dmesg has some error logs.
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