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Old 11-01-2010, 01:45 PM   #1
felipefv
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Exclamation ACPI conflict


Hi,

I'm having some problems with Debian Squeeze. Starting the boot, I get the message:

[ 4.642060] ACPI: I/O resource 0000:00:1f.3 [0x400-0x41f] conflicts with ACPI region SMRG [0x400-0x40f]
[ 4.642107] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver

Anyone have a solution for this?

Thanks!
 
Old 11-01-2010, 02:14 PM   #2
paulsm4
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Hi -

Short answer: No, no good solution I can give you.

Longer answer:
Check out this thread. It's a different ACPI region name - but it's really (IMHO) exactly the same underlying problem.

Please:
Cut/paste your "dmesg" output. Include a couple of lines before, and a couple of lines, after the error so we can determine what your device "1f.3" is. For example:
Code:
[ 6.940280] power_supply ADP1: 1 dynamic props
[ 6.940283] power_supply ADP1: prop ONLINE=1
[ 6.940340] input: Sleep Button (CM) as /devices/LNXSYSTM:00/device:00/PNP0C0E:00/input/input5
[ 6.968564] i801_smbus 0000:00:1f.3: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[ 6.977814] ACPI: I/O resource 0000:00:1f.3 [0xefa0-0xefbf] conflicts with ACPI region SMBI [0xefa0-0xefaf]
[ 6.987218] ACPI: Device needs an ACPI driver 
  <= In this example, the conflicting device (0000:00:1f.3) is i801_smbus
PS:
There is every possibility this message might just be a benign warning. There's not necessarily anything "wrong" with your system, despite the warning.

Last edited by paulsm4; 11-01-2010 at 02:19 PM.
 
Old 11-01-2010, 02:40 PM   #3
H_TeXMeX_H
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Did you recently update the kernel ? If so, try a different version.
 
Old 11-01-2010, 02:42 PM   #4
felipefv
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paulsm4,

Thanks for the reply!

Yes, it's the same thing!

Code:
[    5.679226] i801_smbus 0000:00:1f.3: PCI INT C -> GSI 18 (level, low) -> IRQ 18
[    5.679231] ACPI: I/O resource 0000:00:1f.3 [0x400-0x41f] conflicts with ACPI region SMRG [0x400-0x40f]
[    5.679276] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver
Any ideas? =)


Edit: H_TeXMeX_H, it's a recent installation (today).
 
Old 11-01-2010, 02:53 PM   #5
paulsm4
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Hi -

My advice is to simply ignore it as a benign warning, unless you have reason to believe otherwise.

Here are more links on the subject:

http://linux.derkeiler.com/Mailing-L.../msg10493.html

http://www.lm-sensors.org/wiki/FAQ/C...inkernel2.6.31
 
Old 11-01-2010, 03:11 PM   #6
felipefv
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paulsm4,

Now I'm worried. How can I be sure that my system (hardware) was not damaged by this bug/error?
Any procedures to ensure that?

Last edited by felipefv; 11-01-2010 at 03:13 PM.
 
Old 11-01-2010, 04:37 PM   #7
paulsm4
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Q: How many times do I have to say "benign warning"??????

A: If you're seeing the message, it means the OS ISN'T loading the hwmon driver, and you AREN'T going to risk having two drivers talking to the same hardware. As the Kernel FAQ link I posted said, the whole POINT of the warning is to say that the OS is trying to PROTECT you!

Sigh....

PS:
Q: What exactly is your PC model and motherboard type?

Q: Have you looked in the BIOS for any settings you can change?

Otherwise...

Don't Worry. Be Happy
 
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Old 11-01-2010, 04:44 PM   #8
felipefv
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paulsm4,

Yes, you said it several times, but always telling me the "unless you have reason to believe otherwise". And I don't know about the system protecting me, because I can access cpufreq with no problem (so, I think ACPI is running).

My hardware:

Intel i3 530 2,93Ghz, 4GB RAM, Asus P7H55M-BR.

BIOS:

Yes, I did. I found speedstep function and ACPI 2.0 (things that are related to the error, I think). They are enabled.
 
Old 11-03-2010, 06:55 AM   #9
felipefv
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I would like to thank you all for the help!

Here is the bug report:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=602128
 
Old 11-03-2010, 03:05 PM   #10
paulsm4
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And here's the reply:
Quote:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=602128

This error message means that the kernel has automatically resolved the
conflict by preventing the i801_smbus (native) driver from using the
IO-ports which are also used by the BIOS. So far as I can see, no
damage will be done.

Ben.
Just sayin'
 
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Old 11-03-2010, 03:51 PM   #11
felipefv
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paulsm4,

Thanks! I forgot to put the answer here.
 
  


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