Bug 11632

Summary:	Battery information wrong - MSI S271
Product:	Drivers	Reporter:	Bernd Steinhauser (linux)
Component:	Platform	Assignee:	ykzhao (yakui.zhao)
Status:	CLOSED DUPLICATE
Severity:	normal	CC:	acpi-bugzilla
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	2.6.27-rc7	Subsystem:
Regression:	---	Bisected commit-id:
Attachments:	Output of dmesg Output of dmidecode Output of acpidump

Description Bernd Steinhauser 2008-09-23 19:23:42 UTC

Problem similar to bug 9823.
The information provided by acpi about the battery and it's state is wrong.
cat /proc/acpi/battery/BAT1/info
present:                 yes
design capacity:         37008 mAh
last full capacity:      37008 mAh
battery technology:      rechargeable
design voltage:          37008 mV
design capacity warning: 0 mAh
design capacity low:     0 mAh
capacity granularity 1:  1 mAh
capacity granularity 2:  1 mAh
model number:            MS-1058

serial number:

battery type:            LION

OEM info:                MSI Corp.

cat /proc/acpi/battery/BAT1/state
present:                 yes
capacity state:          ok
charging state:          charged
present rate:            unknown
remaining capacity:      unknown
present voltage:         10000 mV

acpi -sV
     Battery 1: slot empty
     Thermal 1: ok, 50.0 degrees C
  AC Adapter 1: on-line

dmesg, acpidump and dmidecode info will follow.

Comment 1 Bernd Steinhauser 2008-09-23 19:32:57 UTC

Created attachment 17992 [details]
Output of dmesg

Comment 2 Bernd Steinhauser 2008-09-23 19:33:26 UTC

Created attachment 17993 [details]
Output of dmidecode

Comment 3 Bernd Steinhauser 2008-09-23 19:44:27 UTC

Created attachment 17994 [details]
Output of acpidump

Comment 4 ykzhao 2008-09-23 20:58:50 UTC

Will you please not load the msi-laptop driver and see whether the problem still exists?

Comment 5 Shaohua 2008-09-23 22:32:22 UTC

So if you directly read the /proc/acpi/battery ... files, the info is correct. But acpi -sV will return error? This might be a bug of acpi tools.

Comment 6 Bernd Steinhauser 2008-09-24 03:11:50 UTC

(In reply to comment #4)
> Will you please not load the msi-laptop driver and see whether the problem
> still exists?
It seems that this indeed brought it back:
cat /proc/acpi/battery/BAT1/info
present:                 yes
design capacity:         4400 mAh
last full capacity:      2938 mAh
battery technology:      rechargeable
design voltage:          14800 mV
design capacity warning: 0 mAh
design capacity low:     0 mAh
capacity granularity 1:  1 mAh
capacity granularity 2:  1 mAh
model number:            MS-1058

serial number:

battery type:            LION

OEM info:                MSI Corp.

cat /proc/acpi/battery/BAT1/state
present:                 yes
capacity state:          ok
charging state:          charged
present rate:            0 mA
remaining capacity:      2938 mAh
present voltage:         16680 mV

Thank you.

So this is more a bug in the msi-laptop module, right?

(In reply to comment #5)
> So if you directly read the /proc/acpi/battery ... files, the info is
> correct.
> But acpi -sV will return error? This might be a bug of acpi tools.
No, both are wrong.
The acpi proc files state correctly, that the battery is present or not, but all the values are wrong.

Comment 7 ykzhao 2008-09-25 00:25:10 UTC

Thanks for the confirmation.
It seems that this issue is related with the following commit:
   > commit 00eb43a1897a8845d0edb198cec69ac5f1f299dd
   > Author: Lennart Poettering <mzxreary@0pointer.de>
   > Date:   Fri May 4 14:16:19 2007 +0200
      >acpi,msi-laptop: Fall back to EC polling mode for MSI laptop specific EC commands
   
   The EC command used in msi-laptop driver is non-standard EC command. Maybe it can be handled by Lennart Poettering <mzxreary@0pointer.de>.
   thanks.

Comment 8 ykzhao 2008-09-27 18:13:22 UTC

As the battery info can be reported correctly if msi-laptop platform driver is not loaded, change it to the category of platform-drivers.

Comment 9 ykzhao 2008-10-06 19:46:31 UTC


*** This bug has been marked as a duplicate of bug 10699 ***