[GTALUG] war story: irq 19: nobody cared (try booting with the "irqpoll" option)

I moved my CentOS 6.6 system to new hardware (just moved the disk and booted). Things mostly worked but I'd get told of a kernel oops at roughly each boot. Reason: irq 19: nobody cared (try booting with the "irqpoll" option) There was not enough diagnostic informtion to report a bug using ABRT (so it told me).

From googling, I picked up a suggestion to tell the BIOS to set the SATA controller to AHCI mode rather than IDE. My BIOS only gave me a choice of IDE or RAID. With trepidation, I set it to RAID and all has been well. Even with only one disk.

<http://forums.fedoraforum.org/showpost.php?p=1103298> The hardware is an old Dell Inspiron 530s desktop.