http://bugzilla.kernel.org/show_bug.cgi?id=9823
------- Comment #26 from [EMAIL PROTECTED] 2008-02-25 22:00 -------
Thanks for the info.
>From the info in comment #18 we can know that sometimes the design capacity is
less than the remaining capacity.
>remaining capacity: 3769 mAh
>present: yes
>design capacity: 785 mAh
It is uncorrect. And the above info is obtained by calling the AML code
(_BST, _BIF), in which the internal EC RAM is accessed.
>From the info in commetn #23 we can know that sometimes the returned
current_capacity is 0xffffffff and the returned current_current is 0xffffffff.
So os reports the message of "unknown state".
In fact the info is also related with BIOS.
>From the info in comment #22 we can know that sometimes the status of the
battery is not present. In fact the status of the battery is obtaned by the
following AML code:
>Method (_STA, 0, NotSerialized) {
> If (MBTS) {
> Return (0x1F)
> } Else{
> Return (0x0F) }
> }
From the above code the status of the battery is determined by the value of
MBTS, which is located in internal EC access region.
According to the above analysis it seems that the bug is related with EC and
there are two possible reasons .
a. the broken EC firmware ( related with BIOS).
b. Uncorrect EC I/O access (related with EC driver)
Maybe a is the mainly root cause.
Will you please upgrade BIOS and see whether the problem still exists?
--
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.
-------------------------------------------------------------------------
This SF.net email is sponsored by: Microsoft
Defy all challenges. Microsoft(R) Visual Studio 2008.
http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/
_______________________________________________
acpi-bugzilla mailing list
acpi-bugzilla@lists.sourceforge.net
https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
