CPU usage increases on switching to battery from AC power

Thanks for your bug report.

Could you please run either "top" in a terminal or "System -> Administration -> System Monitor (and sort on cpu)" and attempt to identify which processes are using most cpu when you switch from power to battery.

Hello, I ran top with and without the battery and i'm attaching a full screen shot of the top command with and without battery. You can refer to those two screen shots which i'm attaching. Thank you

I also want to add one more thing. When running on battery power i'd mentioned that the cpu usage shoots up. Now when I plug my AC power back, the cpu usage drops down back to the previous value

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage . I have classified this bug as a bug in FIREFOX.
For future reference you might be interested to know that a lot of applications have bug reporting functionality built in to them. This can be accessed via the Report a Problem option in the Help menu for the application with which you are having an issue. You can learn more about this feature at https://wiki.ubuntu.com/ReportingBugs.

This isn't a Firefox bug as much as it is acpi. fire fox does use a bit more cpu% than most apps but since you were running 2 apps and they both went up when you unpluged the ac/dc than its more battery or acpi. firefox isnt going to change just because you unplug laptop

I've been trying to replicate this. Sometimes I get a percentage increase and sometimes a percentage decrease. However both of these are within +/- 10% either side.

sanath: are there any particular pages (eg. was it something showing a flash movie in firefox, or which URL was it?) and for the video (totem instance) you mentioned, how large was the video and in which format? (Most of the actual video scaling part is done by a hardware scaler so should not appear to make any difference to the CPU level).

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to New. Thanks again!.