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



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