acpi_smbus_read_2: AE_ERROR 0x10 on a Mac Pro running -STABLE

[Nate Lawson]

George Hartzell wrote:
> Nate Lawson writes:
>  > George Hartzell wrote:
>  > > Hi,
>  > > 
>  > > I have an 8-way Mac Pro running -STABLE csup'ed a few weeks ago.  It's
>  > > generally working great, but
>  > > 
>  > >    acpi_smbus_read_2: AE_ERROR 0x10
>  > > 
>  > > pops up on the console several times per minute.  It doesn't seem to
>  > > hurt anything, but it fills up the dmesg buffer and just doesn't seem
>  > > right.
>  > > 
>  > > Does it ring any bells?  What add'l info can I provide that might help
>  > > shut it up?
>  > 
>  > It's the acpi_smbat device (smart battery).  For some reason, your
>  > system is reporting an error when it reads the battery status every 10
>  > seconds or so.
>  > 
>  > I don't know much about the SMbus status codes.  You could start by
>  > posting your dmesg (AE_ERROR messages trimmed for size).
> 
> I've put dmesg -v, dmesg, sysctl hw.acpi, and acpidump -dt output at:
> 
> http://shrimp.alerce.com/misc/delicious-dmesg-verbose.txt
> http://shrimp.alerce.com/misc/macpro.asl
> http://shrimp.alerce.com/misc/delicious-dmesg.txt
> http://shrimp.alerce.com/misc/sysctl.hw.acpi
> 
> The top of the dmesg -v output seems to have scrolled out of the
> buffer.

Well, your ASL advertises an acpi_smbat device:

                    Device (SMB0)
                    {
                        Name (_HID, "ACPI0001")
                        Name (_EC, 0x2010)
                    }

Not sure what we can do except you can add this to loader.conf:
    debug.acpi.disabled="smbat"

-Nate