APIC error on CPU1: 60(60) in my dmesg log. What does it mean? Should I be worried! Is this some hardware issue?

  • Please be more detailed: OS and kernel version, and type of hardware. Also, are you on bare metal or in a virtual machine? – AndrewQ Dec 14 '11 at 12:59
  • bare matal centos 5.6, 2.6.18-238.5.1.el5 x86_64 type of hardware its simple workstation(desktop) working as server, CPU Pentium(R) Dual CPU E2220 @ 2.40GHz – B14D3 Dec 14 '11 at 14:00

This error indicates a failure in the Advanced Programmable Interrupt Controller. The failure means that the kernel was not able to communicate with the CPU APIC (wrong message). There isn't a unique solution to this; the cause may be:

  • a buggy driver (network card driver is a good candidate, as for unused modules that kernel loads anyway);
  • an old or defective BIOS;
  • some kind of wrong setting in the BIOS;
  • a broken motherboard or (uncommon) CPU.

If you experience a lot of crashes, freezings, strange behaviour of software, you can try:

  • boot with the "noapic" kernel parameter;
  • upgrade BIOS;
  • upgrade CentOS to 5.7 or 6.0;

Otherwise, if everything works, dont'worry....

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