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

DISCUSSION Robin Holt 3 participants 5 messages May 21, 2008 – May 23, 2008 ACPI

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Robin Holt

author

2008-05-21 11:57 UTC #0 lore raw

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

Alexey Starikovskiy

2008-05-21 12:14 UTC #1 lore raw

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.

Quoted 85 lines · 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

Pavel Machek

2008-05-23 07:22 UTC #2 lore raw

In reply to Robin Holt

Hi!

Quoted 9 lines

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.

Quoted 4 lines

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...

Quoted 7 lines

$ 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

Signature · 2 lines

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

Robin Holt

author

2008-05-23 08:43 UTC #3 lore raw

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

Quoted 37 lines · Pavel Machek

Hi!
Quoted 9 lines
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.
Quoted 4 lines
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...
Quoted 7 lines
$ 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
Signature · 7 lines
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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Robin Holt

author

2008-05-23 09:40 UTC #4 lore raw

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

Quoted 60 lines · 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
Quoted 26 lines · Pavel Machek
Hi!
Quoted 9 lines
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.
Quoted 4 lines
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...
Quoted 7 lines
$ 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
Quoted 11 lines
Because something is clearly wrong here.
Pavel
Signature · 7 lines
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
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To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected]
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