ACPI conflicts

I am hoping someone would be able to shed light on the following conflicts I am getting during boot up:

ACPI Warning: 0x00000460-0x0000047f SystemIO conflicts with Region \PMIO 1 (20120320/utaddress-251) ACPI Warning: 0x00000430-0x00000433 SystemIO conflicts with Region \PMIO 1 (20120320/utaddress-251) ACPI Warning: 0x00000430-0x00000433 SystemIO conflicts with Region \_SB_.PCI0.LPCB.SLPR 2 (20120320/utaddress-251) ACPI Warning: 0xfed1f410-0xfed1f414 SystemMemory conflicts with Region \RCRB 1 (20120320/utaddress-251) ACPI Warning: 0x00000428-0x0000042f SystemIO conflicts with Region \SWC1 1 (20120320/utaddress-251) ACPI Warning: 0x00000428-0x0000042f SystemIO conflicts with Region \PMIO 2 (20120320/utaddress-251) ACPI Warning: 0x00000500-0x0000053f SystemIO conflicts with Region \GPIO 1 (20120320/utaddress-251) ACPI Warning: 0x00000290-0x00000297 SystemIO conflicts with Region \_TZ_.IP__ 1 (20120320/utaddress-251) ACPI Warning: 0x00000290-0x00000297 SystemIO conflicts with Region \_SB_.PCI0.LPCB.SIO1.RNTR 2 (20120320/utaddress-251)

The last two are caused by the fact that I am forced to use the f71882fg driver to manage my fan speeds (hence the use of acpi-lax kernel parameter) as ACPI seems quite incapable of doing that. I used to be on kernel v3.3, but since I upgraded to 3.5 the other day, in addition to the last two warnings, the others showed up.

Does anyone have any idea how to find out what is causing this and possibly avoid it, if I can? Are these dangerous? ACPI warns me that "this conflict may cause random problems and system instability" and that "if an ACPI driver is available for this device, you should use it instead of the native driver", but I have no idea what is causing this and how to "use the native ACPI driver". Thanks in advance.

does clearing CONFIG_GPIO_ICH help?

thanks,
rui

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I don't have that option in my .config (I am on v3.5 of the kernel), so I presume it is not used.

then how about clearing CONFIG_LPC_ICH?

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Good catch! I also have CONFIG_LPC_SCH, should I clear that too?

No, I don't think so.

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That did the trick, thank you - you are a star!

Now, if I knew how to tell ACPI *not* to claim (or try to) the last two regions, I'll be more than happy. In other words, the last two warnings I have:

ACPI Warning: 0x00000290-0x00000297 SystemIO conflicts with Region \_TZ_.IP__ 1 (20120320/utaddress-251) ACPI Warning: 0x00000290-0x00000297 SystemIO conflicts with Region \_SB_.PCI0.LPCB.SIO1.RNTR 2 (20120320/utaddress-251)

are caused by the fact that I simply need to load a separate module (f71882fg) to manage my fan speeds. ACPI is incapable of doing that, but still some of its components/code is trying to claim these regions. If I know how to tell ACPI not to touch these and let the f71882fg driver do its work, I'll be a happy man...