That shows that the kernel sends us an update for all 4 power supplies every 10 seconds, which doesn't sound "excessive". So I'm glad that we at least ruled out this end.
So going one step up the stack, could you run "upower --monitor-detail" when this happens? In theory this should exactly mirror the kernel uevents for the power_supply updates; but earlier comments seem to suggest that it sends out a lot more. → If it shows tons of updates, we have our culprit → If it shows 4 updates every 10 s, it's fine. In that case, please run dbus-monitor --system | ts -s '%.S' to see what's going on on the bus, i. e. whether upower actually sends so many signals (or something else is). (dbus-monitor doesn't do time-stamping by itself, so piping it through ts is better for logging). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1337200 Title: High CPU due to excessive device changed signals from upower To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-system-settings/+bug/1337200/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
