In my case I only have one kacpid process. I used various Ubuntu releases and since DAPPER I have this problem. I've tested EDGY, FEISTY, and all the kernels used in those releases. As I known kacpid is a communication process between acpi and kernel, in fact this bug usually starts when I connect or disconnect the battery. The CPU goes to 75-80-85...-90-95% and there is nothing running. The pc over heats and the fan doesn't start...When I reboot the pc, the bios launch the fan, and it starts working in Ubuntu. I've tested fedora core 6 and the bug is there too, but it allows you to run a console and launch top, in Ubuntu the only thing I can do is a simulation of power down (poweroff in the button :P).
I don't know where the bug is but it's there....I've noticed that many people have this problem, but they do not report, so I think that it is important to refer it one more time, and if you google around you'll find more people with it. I' using an Asus Notebook, and I've noticed that this happens in most of the cases in notebooks. cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 13 model name : Intel(R) Pentium(R) M processor 1.60GHz stepping : 6 cpu MHz : 600.000 cache size : 2048 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe up est tm2 bogomips : 1200.88 clflush size : 64 ------//------- top: 31 root 11 -5 0 0 0 S 56.0 0.0 6:45.76 kacpid 5578 brasco 15 0 11020 5316 3368 R 3.6 1.0 0:11.60 xterm Hope hearing a solution from you soon, guys.... thks -- kacpid-work eat 99% CPU after resuming from hibernate https://bugs.launchpad.net/bugs/56246 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs