Steve, Perhaps you can remove the "battery charging" aspect of your observation by removing the battery and running directly from AC w/o a battery present? (not every laptop will run in this mode, but most will)
It is possible that your laptop enables some power savings modes when on DC that it is not enabling when on AC. Eg. most laptops boot in low-frequency-mode when on DC, but some boot in high-frequency-mode when on AC... You'd be able to tell pretty quick by comparing the bogomips from the AC vs DC boot messages. While sometimes these difference are hidden in firmware, sometimes they are exposed to ACPI. Please attach the output from "acpidump" so we can figure out what the laptop exposes. Also, the output from dmesg -s64000. -- CPU overheats during high usage "throttling <not supported>" https://bugs.launchpad.net/bugs/22336 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