Please attach the acpidump of your laptop.
Please attach the output of "grep . /proc/acpi/battery/*/*" when you think it's working/broken.

> sometimes no AC adapter is detected.

BTW, do you mean there is no notification when AC is plugged/unplugged?

Created attachment 26649 [details]
acpidump output

Hi

When I do 'acpidump > acpidump.txt' displays this error 'Wrong checksum for generic table!' and with 'dmesg' displays this error 'ACPI Warning: Incorrect checksum in table [OEMB] - 58, should be 83 (20090903/tbutils-314)'

I attached acpidump output

grep . /proc/acpi/battery/*/*

/proc/acpi/battery/BAT1/alarm:alarm:                   unsupported
/proc/acpi/battery/BAT1/info:present:                 no
/proc/acpi/battery/BAT1/state:present:                 yes
/proc/acpi/battery/BAT1/state:capacity state:          ok
/proc/acpi/battery/BAT1/state:charging state:          charged
/proc/acpi/battery/BAT1/state:present rate:            unknown
/proc/acpi/battery/BAT1/state:remaining capacity:      unknown
/proc/acpi/battery/BAT1/state:present voltage:         10000 mV


The battery is charged, when I see other state I will send it to you.


do you mean there is no notification when AC is plugged/unplugged?

No, the AC adapter is always plugged, but acpi shows that sometimes is plugged and sometimes it isn't.

Thanks

Another battery state: Battery full and it shows all OK

[usuario@localhost BAT1]$ grep . *
alarm:alarm:                   unsupported
info:present:                 yes
info:design capacity:         4800 mAh
info:last full capacity:      3800 mAh
info:battery technology:      rechargeable
info:design voltage:          11100 mV
info:design capacity warning: 0 mAh
info:design capacity low:     0 mAh
info:capacity granularity 1:  1 mAh
info:capacity granularity 2:  1 mAh
info:model number:            MS-1719
info:serial number:           
info:battery type:            LION
info:OEM info:                MSI Corp.
state:present:                 yes
state:capacity state:          ok
state:charging state:          charged
state:present rate:            0 mA
state:remaining capacity:      3800 mAh
state:present voltage:         12531 mV

The battery is charged,but ACPI shows this 55339mV (55 V battery voltage)

alarm:present:                 no
info:present:                 yes
info:design capacity:         2322 mAh
info:last full capacity:      49166 mAh
info:battery technology:      rechargeable
info:design voltage:          55339 mV
info:design capacity warning: 0 mAh
info:design capacity low:     0 mAh
info:capacity granularity 1:  1 mAh
info:capacity granularity 2:  1 mAh
info:model number:            MS-1719
info:serial number:           
info:battery type:            LION
info:OEM info:                MSI Corp.
state:present:                 yes
state:capacity state:          ok
state:charging state:          charging
state:present rate:            2304 mA
state:remaining capacity:      14 mAh
state:present voltage:         55344 mV

(In reply to comment #3)
> 
> do you mean there is no notification when AC is plugged/unplugged?
> 
> No, the AC adapter is always plugged, but acpi shows that sometimes is
> plugged
> and sometimes it isn't.
> 
so you mean that sometimes the AC status is unplugged even if the AC adapter is always plugged, right?

                        Method (_PSR, 0, NotSerialized)
                        {
                            Return (POWS)
                        }

so POWS is not correct sometimes.

I think this is the root cause of the Battery problems as well, as _BST return value varies when POWS is cleared/set.

>so you mean that sometimes the AC status is unplugged even if the AC adapter
>is
always plugged, right?

Yes, that is.

Well, then what I do with:
                        Method (_PSR, 0, NotSerialized)
                        {
                            Return (POWS)
                        }

Usually , battery state doesn't work very often, the AC adapter sometimes.

Thanks for your help.

(In reply to comment #7)
> 
> Usually , battery state doesn't work very often, the AC adapter sometimes.
> 
is there any case that the AC adapter status is correct but the battery status is broken?
If yes,please attach the ac/battery status in that case.

The ac-adapter is OK and the battery shows a 0% of charge.


[user@localhost ac_adapter]$ cat /proc/acpi/ac_adapter/ADP1/state 
state:                   on-line
[user@localhost ac_adapter]$ cat /proc/acpi/battery/BAT1/state 
present:                 yes
capacity state:          ok
charging state:          charging
present rate:            2304 mA
remaining capacity:      14 mAh
present voltage:         55344 mV

Add to Comment #9 

The ac-adapter us plugged and the battery is charged 100%

Thanks

Like you said I tried to plug and unplug the ac-adapter. And sometimes when I turn on the laptop (plugged and the battery charged 100%) shows all OK,then I unplug the ac-adapter and it shows OK,in 1-2 minutes the battery shows charged 0% but battery detected, then I unplug the ac-adapter and it shows the battery isn't present.

Created attachment 26969 [details]
custom UPBS method

please
1. build a kernel later than 2.6.34 with CONFIG_ACPI_DEBUG set.
2. reboot with acpi.debug_layer=0x80 acpi.debug_level=0x06
3. dmesg -c
4. get the AC & battery state
5. attach the dmesg output when AC is online/offline

Do I anything with this file custom UPBS method   (666 bytes, application/octet-stream)?

Thanks

(In reply to comment #13)
> Do I anything with this file custom UPBS method   (666 bytes,
> application/octet-stream)?
> 
oops, please follow the steps below.

(In reply to comment #12)
> Created an attachment (id=26969) [details]
> custom UPBS method
> 
> please
> 1. build a kernel later than 2.6.34 with CONFIG_ACPI_DEBUG set.
> 2. reboot with acpi.debug_layer=0x80 acpi.debug_level=0x06
> 3. dmesg -c

4. mount debugfs
5. the custom UPBS file by running "cat UPBS.aml > /sys/kernel/debug/acpi/custom_method"

> 4. get the AC & battery state
> 5. attach the dmesg output when AC is online/offline

Created attachment 27404 [details]
dmesg -c output

Created attachment 27405 [details]
dmesg output when the ac adapter is plugged

Created attachment 27406 [details]
dmesg output when the ac adapter is unplugged

Sorry, I have had lot of problems with the Kernel's compilation,I've finaly not been able to make it work the system graphic fine with my nvidia.I did everything from console.

1. build a kernel later than 2.6.34 with CONFIG_ACPI_DEBUG set.

I've begun compiling 2.6.35.rc5.git3, I've finished doing it with 2.6.35 stable.I've not found the CONFIG_ACPI_DEBUG option but I've actived all the options in ACPI menu in make menuconfig

2. reboot with acpi.debug_layer=0x80 acpi.debug_level=0x06

I've inserted these options in my menu.lst archive

3. dmesg -c

In the file dmesg_c.txt

4. mount debugfs

I've mounted with 'mount -t debugfs nonedebugs /sys/kernel/debug'

5. the custom UPBS file by running "cat UPBS.aml >
/sys/kernel/debug/acpi/custom_method"

I did it without errors

4. get the AC & battery state

The problem persists , all is equal

> 5. attach the dmesg output when AC is online/offline

They are in the dmesg_ac_on.txt and dmesg_ac_off.txt

there is something else,when I always quit the ac_adapter the battery shows as if It's not present ( It is always plugged)

Hi Zhang

Several months ago I probed kernel 2.6.35 stable without changes in battery problem,after I'd been probing others kernels still 2.6.37.rc3, now I have the same problem, Can I do anything more?

Thank you very much

so this is a regression, right?
Please attach the dmidecode of your laptop.

Created attachment 41732 [details]
dmidecode of laptop R700-U.AP79B

Yes, for me is a regression

Can I do anything more?

I am trying the latest kernels.

I've tried kernel 2.6.37.4 and all it work very fine.

A lot of thanks for your work.

I modify the post title like solved.