Someone suggested out of band that I open a kernel.org bugzilla. By way of preparation for doing that, I searched the existing bugzilla for "ACPI CPU C3 interrupt" and turned up additional insight:
In BZ 10409 http://bugzilla.kernel.org/show_bug.cgi?id=10409 it was suggested leaving HPET enabled, and applying boot option 'acpi_skip_timer_override' Running powertop with this option set, I am told the CPU is in C3 state 95.3% of the time, and that the wakeups are: 23% hpet3 18% hrtimer_start (tick_sched_timer) I suspect that to those who understand how HPET ACPI interrupts work, this is probably the key insight into understanding what to do next. Any suggestions for a next step for me to take? ** Bug watch added: Linux Kernel Bug Tracker #10409 http://bugzilla.kernel.org/show_bug.cgi?id=10409 -- Jaunty will not boot on Dell Optiplex 760 unless hpet=disable https://bugs.launchpad.net/bugs/348694 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
