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