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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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