I too have had this problem in Feisty and Gusty Ubuntu. I have a Toshiba M100 Laptop. I posted this problem several months ago on the Ubuntu forums but no one has replied to it. You'll notice the acpi -V giving a message saying the battery is discharging and the AC is online. This bug is very annoying...
Here are the specs of my system: *Note: These results are for Feisty, I get the same results in Gusty except for the uname -a of course. Feisty Ubuntu 7.04 Toshiba Satellite M100 9 Cell Battery Intel Centrino Core Duo T2400 / 1.83 Ghz $uname -a Linux nanode 2.6.20-16-generic #2 SMP Fri Aug 31 00:55:27 UTC 2007 i686 GNU/Linux $acpi -V Battery 1: discharging, 66%, remaining No support for device type: thermal AC Adapter 1: on-line $hal-find-by-capability --capability battery /org/freedesktop/Hal/devices/acpi_BAT1 $cat /proc/acpi/battery/BAT1/info present: yes design capacity: 8600 mAh last full capacity: 8600 mAh battery technology: rechargeable design voltage: 11100 mV design capacity warning: 420 mAh design capacity low: 258 mAh capacity granularity 1: 264 mAh capacity granularity 2: 3780 mAh model number: PA3400U serial number: 3658Q battery type: Li-Ion OEM info: TOSHIBA $cat /proc/acpi/battery/BAT1/state present: yes capacity state: ok charging state: discharging present rate: 0 mA remaining capacity: 5160 mAh present voltage: 11100 mV -- ubuntu doesn't notice when running on battery https://bugs.launchpad.net/bugs/39413 You received this bug notification because you are a member of Ubuntu Bugs, which is a direct subscriber. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs