Lonni J Friedman wrote:
I just performed a fresh FC5-x86 installation on a Toshiba Tecra M3 notebook. All was good until I updated to the latest kernel. Now i'm seeing this error in dmesg about 10 times/second, non-stop: unexpected IRQ trap at vector 12 Anyone have any ideas on what is going on here? I tried booting with both noapic and acpi=off, and neither made any difference.
Basically a device on IRQ 12 is spamming you with interrupts, Linux believes that is an "Illegal vector":
/*
* 'what should we do if we get a hw irq event on an illegal
vector'.
* each architecture has to answer this themself.
*/
For i386 the answer is to print that dmesg message.
What is an "illegal vector"? I guess one that does not have a driver
ready to service the interrupts.
Normally hardware devices don't start issuing interrupts until they are recognized and asked to do so by a driver.
What does cat /proc/interruptssay? What devices are on your box that you are not using under Linux? How about a PS/2-style mouse-like device or somesuch? Anything in /var/log/messages at boot-time about devices not being recognized properly?
-Andy
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