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

Nate Lawson nate at
Sun Jul 15 23:04:59 UTC 2007

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).


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