Hi, I have two batteries for my Thinkpad X60 Tablet, one 6-cell and one 9-cell, with very different capacities. If I boot up or resume from suspend with say battery A connected, then /proc/acpi/battery/BAT0/info correctly shows information about battery A. If I then connect the system to AC power and remove battery A, /proc/acpi/battery/BAT0/info correctly shows that no battery is present. If I then attach battery B, then /proc/acpi/battery/BAT0/info incorrectly shows the information about battery A again! (And similarly e.g. kpowersave shows the wrong capacity.) On the other hand /proc/acpi/battery/BAT0/state always shows the correct information. A suspend-resume cycle clears up the problem. For example: andy@chirality ~ $ cat /proc/acpi/battery/BAT0/state present: yes capacity state: ok charging state: charged present rate: 0 mW remaining capacity: 61650 mWh present voltage: 16587 mV andy@chirality ~ $ cat /proc/acpi/battery/BAT0/info present: yes design capacity: 28800 mWh last full capacity: 23550 mWh battery technology: rechargeable design voltage: 14400 mV design capacity warning: 1177 mWh design capacity low: 200 mWh capacity granularity 1: 1 mWh capacity granularity 2: 1 mWh model number: 93P5031 serial number: 482 battery type: LION OEM info: SANYO and then after suspend-resume, the correct information: andy@chirality ~ $ cat /proc/acpi/battery/BAT0/info present: yes design capacity: 66240 mWh last full capacity: 61650 mWh battery technology: rechargeable design voltage: 14400 mV design capacity warning: 3082 mWh design capacity low: 200 mWh capacity granularity 1: 1 mWh capacity granularity 2: 1 mWh model number: 42T4507 serial number: 833 battery type: LION OEM info: SANYO At the moment I am seeing this problem with kernel 2.6.25.3, but I believe I have had it for a while (I was reminded of it only just now because I started using kpowersave again). Any ideas? I'm happy to try to debug, but don't know where to start. Thanks, and best wishes, -Andy -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
