Sony laptop battery has odd behavior with 2.6.26-rc3ish build.

Sony laptop battery has odd behavior with 2.6.26-rc3ish build.

[Robin Holt]

A couple days ago, I updated my test build to commit
8033c6e9736c29cce5f0d0abbca9a44dffb20c39 and noticed an odd behavior
with the battery.  If I unplug the power, the battery discharges and
that is reflected in /proc/acpi/battery/BAT0/state.  I am not certain
the discharge is continuous and uniform or if it goes in steps.  When I
plug the power back in, the level stays at a constant value (+-1mAh)
for a considerable period of time.  It then does a single step back to
the fully charged value.

I have not done any searching to see when this began.  I had been running
the ubuntu 2.6.22-14 kernel before this and the behavior was normal.

I am not certain what information you will need.  Commit is above.

$ cat /proc/acpi/battery/BAT0/alarm
alarm:                   unsupported
$ cat /proc/acpi/battery/BAT0/info
present:                 yes
design capacity:         4800 mAh
last full capacity:      4096 mAh
battery technology:      non-rechargeable
design voltage:          12588 mV
design capacity warning: 1000 mAh
design capacity low:     400 mAh
capacity granularity 1:  100 mAh
capacity granularity 2:  100 mAh
model number:            
serial number:           
battery type:            LiOn
OEM info:                Sony Corp.
$ cat /proc/acpi/battery/BAT0/state
present:                 yes
capacity state:          ok
charging state:          charging
present rate:            unknown
remaining capacity:      4096 mAh
present voltage:         unknown

What I think is relevant .config information:
CONFIG_ACPI=y
CONFIG_ACPI_SLEEP=y
CONFIG_ACPI_PROCFS=y
CONFIG_ACPI_PROCFS_POWER=y
CONFIG_ACPI_SYSFS_POWER=y
CONFIG_ACPI_PROC_EVENT=y
CONFIG_ACPI_AC=m
CONFIG_ACPI_BATTERY=m
CONFIG_ACPI_BUTTON=m
CONFIG_ACPI_VIDEO=m
CONFIG_ACPI_FAN=m
CONFIG_ACPI_DOCK=m
CONFIG_ACPI_BAY=m
CONFIG_ACPI_PROCESSOR=m
CONFIG_ACPI_HOTPLUG_CPU=y
CONFIG_ACPI_THERMAL=m
CONFIG_ACPI_WMI=m
CONFIG_ACPI_ASUS=m
CONFIG_ACPI_TOSHIBA=m
# CONFIG_ACPI_CUSTOM_DSDT is not set
CONFIG_ACPI_BLACKLIST_YEAR=2000
# CONFIG_ACPI_DEBUG is not set
CONFIG_ACPI_EC=y
CONFIG_ACPI_POWER=y
CONFIG_ACPI_SYSTEM=y
CONFIG_ACPI_CONTAINER=m
CONFIG_ACPI_SBS=m
CONFIG_X86_ACPI_CPUFREQ=m
CONFIG_X86_POWERNOW_K7_ACPI=y
CONFIG_X86_POWERNOW_K8_ACPI=y
# CONFIG_X86_ACPI_CPUFREQ_PROC_INTF is not set
CONFIG_HOTPLUG_PCI_ACPI=m
CONFIG_HOTPLUG_PCI_ACPI_IBM=m
CONFIG_PNPACPI=y
CONFIG_THINKPAD_ACPI=m
# CONFIG_THINKPAD_ACPI_DEBUG is not set
CONFIG_THINKPAD_ACPI_BAY=y
CONFIG_THINKPAD_ACPI_VIDEO=y
CONFIG_THINKPAD_ACPI_HOTKEY_POLL=y
CONFIG_BLK_DEV_IDEACPI=y
CONFIG_ATA_ACPI=y
CONFIG_PATA_ACPI=m
CONFIG_SONY_LAPTOP=m
CONFIG_SONYPI_COMPAT=y
CONFIG_SONYPI=m

Thanks,
Robin Holt

Re: Sony laptop battery has odd behavior with 2.6.26-rc3ish build.

[Alexey Starikovskiy]

Could you please open bug report at bugzilla.kernel.org under ACPI/Battery and
attach all the information to it?
dmesg might be helpful too.

Thanks,
Alex.
Robin Holt wrote:
> A couple days ago, I updated my test build to commit
> 8033c6e9736c29cce5f0d0abbca9a44dffb20c39 and noticed an odd behavior
> with the battery.  If I unplug the power, the battery discharges and
> that is reflected in /proc/acpi/battery/BAT0/state.  I am not certain
> the discharge is continuous and uniform or if it goes in steps.  When I
> plug the power back in, the level stays at a constant value (+-1mAh)
> for a considerable period of time.  It then does a single step back to
> the fully charged value.
> 
> I have not done any searching to see when this began.  I had been running
> the ubuntu 2.6.22-14 kernel before this and the behavior was normal.
> 
> I am not certain what information you will need.  Commit is above.
> 
> $ cat /proc/acpi/battery/BAT0/alarm
> alarm:                   unsupported
> $ cat /proc/acpi/battery/BAT0/info
> present:                 yes
> design capacity:         4800 mAh
> last full capacity:      4096 mAh
> battery technology:      non-rechargeable
> design voltage:          12588 mV
> design capacity warning: 1000 mAh
> design capacity low:     400 mAh
> capacity granularity 1:  100 mAh
> capacity granularity 2:  100 mAh
> model number:            
> serial number:           
> battery type:            LiOn
> OEM info:                Sony Corp.
> $ cat /proc/acpi/battery/BAT0/state
> present:                 yes
> capacity state:          ok
> charging state:          charging
> present rate:            unknown
> remaining capacity:      4096 mAh
> present voltage:         unknown
> 
> What I think is relevant .config information:
> CONFIG_ACPI=y
> CONFIG_ACPI_SLEEP=y
> CONFIG_ACPI_PROCFS=y
> CONFIG_ACPI_PROCFS_POWER=y
> CONFIG_ACPI_SYSFS_POWER=y
> CONFIG_ACPI_PROC_EVENT=y
> CONFIG_ACPI_AC=m
> CONFIG_ACPI_BATTERY=m
> CONFIG_ACPI_BUTTON=m
> CONFIG_ACPI_VIDEO=m
> CONFIG_ACPI_FAN=m
> CONFIG_ACPI_DOCK=m
> CONFIG_ACPI_BAY=m
> CONFIG_ACPI_PROCESSOR=m
> CONFIG_ACPI_HOTPLUG_CPU=y
> CONFIG_ACPI_THERMAL=m
> CONFIG_ACPI_WMI=m
> CONFIG_ACPI_ASUS=m
> CONFIG_ACPI_TOSHIBA=m
> # CONFIG_ACPI_CUSTOM_DSDT is not set
> CONFIG_ACPI_BLACKLIST_YEAR=2000
> # CONFIG_ACPI_DEBUG is not set
> CONFIG_ACPI_EC=y
> CONFIG_ACPI_POWER=y
> CONFIG_ACPI_SYSTEM=y
> CONFIG_ACPI_CONTAINER=m
> CONFIG_ACPI_SBS=m
> CONFIG_X86_ACPI_CPUFREQ=m
> CONFIG_X86_POWERNOW_K7_ACPI=y
> CONFIG_X86_POWERNOW_K8_ACPI=y
> # CONFIG_X86_ACPI_CPUFREQ_PROC_INTF is not set
> CONFIG_HOTPLUG_PCI_ACPI=m
> CONFIG_HOTPLUG_PCI_ACPI_IBM=m
> CONFIG_PNPACPI=y
> CONFIG_THINKPAD_ACPI=m
> # CONFIG_THINKPAD_ACPI_DEBUG is not set
> CONFIG_THINKPAD_ACPI_BAY=y
> CONFIG_THINKPAD_ACPI_VIDEO=y
> CONFIG_THINKPAD_ACPI_HOTKEY_POLL=y
> CONFIG_BLK_DEV_IDEACPI=y
> CONFIG_ATA_ACPI=y
> CONFIG_PATA_ACPI=m
> CONFIG_SONY_LAPTOP=m
> CONFIG_SONYPI_COMPAT=y
> CONFIG_SONYPI=m
> 
> Thanks,
> Robin Holt

Re: Sony laptop battery has odd behavior with 2.6.26-rc3ish build.

[Pavel Machek]

Hi!

> A couple days ago, I updated my test build to commit
> 8033c6e9736c29cce5f0d0abbca9a44dffb20c39 and noticed an odd behavior
> with the battery.  If I unplug the power, the battery discharges and
> that is reflected in /proc/acpi/battery/BAT0/state.  I am not certain
> the discharge is continuous and uniform or if it goes in steps.  When I
> plug the power back in, the level stays at a constant value (+-1mAh)
> for a considerable period of time.  It then does a single step back to
> the fully charged value.
> 
> I have not done any searching to see when this began.  I had been running
> the ubuntu 2.6.22-14 kernel before this and the behavior was normal.
> 
> I am not certain what information you will need.  Commit is above.

git bisect would certainly help...

> $ cat /proc/acpi/battery/BAT0/alarm
> alarm:                   unsupported
> $ cat /proc/acpi/battery/BAT0/info
> present:                 yes
> design capacity:         4800 mAh
> last full capacity:      4096 mAh
> battery technology:      non-rechargeable

Because something is clearly wrong here.

						Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Re: Sony laptop battery has odd behavior with 2.6.26-rc3ish build.

[Robin Holt]

I think this is my battery/laptop ACPI.  I just booted back to  2.6.22-14
and the behavior remained the same.  Interestingly, it started chaged
to 4096mAh and I unplugged it.  The battery began discharging.  When it
reached 3800mAh, I plugged it back in.  The battery indicated it was
charging, but remaining capacity slowly declined to 3072mAh where it
stablized.  Removing/Instaling the battery gave no change in behavior,
upon reinsertion, the reading remained at 3072mAh.  I then unplugged the
charger.  It was approx 35 seconds before the reading began to trickle
back down.  Again, it trickled down slowly (which it is doing currently).

Either it has always behaved this way and I just didn't notice it or
something has changed inside my battery.  I have not done any BIOS update
in years (last one that was available).

Thanks,
Robin

On Fri, May 23, 2008 at 09:21:56AM +0200, Pavel Machek wrote:
> Hi!
> 
> > A couple days ago, I updated my test build to commit
> > 8033c6e9736c29cce5f0d0abbca9a44dffb20c39 and noticed an odd behavior
> > with the battery.  If I unplug the power, the battery discharges and
> > that is reflected in /proc/acpi/battery/BAT0/state.  I am not certain
> > the discharge is continuous and uniform or if it goes in steps.  When I
> > plug the power back in, the level stays at a constant value (+-1mAh)
> > for a considerable period of time.  It then does a single step back to
> > the fully charged value.
> > 
> > I have not done any searching to see when this began.  I had been running
> > the ubuntu 2.6.22-14 kernel before this and the behavior was normal.
> > 
> > I am not certain what information you will need.  Commit is above.
> 
> git bisect would certainly help...
> 
> > $ cat /proc/acpi/battery/BAT0/alarm
> > alarm:                   unsupported
> > $ cat /proc/acpi/battery/BAT0/info
> > present:                 yes
> > design capacity:         4800 mAh
> > last full capacity:      4096 mAh
> > battery technology:      non-rechargeable
> 
> Because something is clearly wrong here.
> 
> 						Pavel
> -- 
> (english) http://www.livejournal.com/~pavelmachek
> (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

Re: Sony laptop battery has odd behavior with 2.6.26-rc3ish build.

[Robin Holt]

Definitely the battery.  I just rebooted to XP and did a similar
experiment with their battery monitor and it behaved equivalently
(although they present only percentages).  So, I would say this is
something unrelated and was just finally noticed because I was paying
more attention.

Thanks,
Robin

On Fri, May 23, 2008 at 03:43:46AM -0500, Robin Holt wrote:
> I think this is my battery/laptop ACPI.  I just booted back to  2.6.22-14
> and the behavior remained the same.  Interestingly, it started chaged
> to 4096mAh and I unplugged it.  The battery began discharging.  When it
> reached 3800mAh, I plugged it back in.  The battery indicated it was
> charging, but remaining capacity slowly declined to 3072mAh where it
> stablized.  Removing/Instaling the battery gave no change in behavior,
> upon reinsertion, the reading remained at 3072mAh.  I then unplugged the
> charger.  It was approx 35 seconds before the reading began to trickle
> back down.  Again, it trickled down slowly (which it is doing currently).
> 
> Either it has always behaved this way and I just didn't notice it or
> something has changed inside my battery.  I have not done any BIOS update
> in years (last one that was available).
> 
> Thanks,
> Robin
> 
> On Fri, May 23, 2008 at 09:21:56AM +0200, Pavel Machek wrote:
> > Hi!
> > 
> > > A couple days ago, I updated my test build to commit
> > > 8033c6e9736c29cce5f0d0abbca9a44dffb20c39 and noticed an odd behavior
> > > with the battery.  If I unplug the power, the battery discharges and
> > > that is reflected in /proc/acpi/battery/BAT0/state.  I am not certain
> > > the discharge is continuous and uniform or if it goes in steps.  When I
> > > plug the power back in, the level stays at a constant value (+-1mAh)
> > > for a considerable period of time.  It then does a single step back to
> > > the fully charged value.
> > > 
> > > I have not done any searching to see when this began.  I had been running
> > > the ubuntu 2.6.22-14 kernel before this and the behavior was normal.
> > > 
> > > I am not certain what information you will need.  Commit is above.
> > 
> > git bisect would certainly help...
> > 
> > > $ cat /proc/acpi/battery/BAT0/alarm
> > > alarm:                   unsupported
> > > $ cat /proc/acpi/battery/BAT0/info
> > > present:                 yes
> > > design capacity:         4800 mAh
> > > last full capacity:      4096 mAh
> > > battery technology:      non-rechargeable
> > 
> > Because something is clearly wrong here.
> > 
> > 						Pavel
> > -- 
> > (english) http://www.livejournal.com/~pavelmachek
> > (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
> > --
> > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> > the body of a message to majordomo@vger.kernel.org
> > More majordomo info at  http://vger.kernel.org/majordomo-info.html
> > Please read the FAQ at  http://www.tux.org/lkml/
> --
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/