The system logs a warning "Please reboot with intremap=off" in the system log

Solution Verified - Updated -

Issue

  • The following warning is logged in the dmesg output or in the system log:
[Hardware Error]: This system BIOS has enabled interrupt remapping
on a chipset that contains an errata making that
feature unstable.  Please reboot with intremap=off
added to the kernel command line and contact
your BIOS vendor for an update
  • Interrupt remapping enabled causes various problems on systems with the Intel 5500 and 5520 chipsets (revision 0x13) and the Intel X58 chipset (revisions 0x12, 0x13, 0x22).

  • The symptoms can range from network link state flapping and partial to the complete loss of the network connectivity with the probable following messages in the system log:

kernel: do_IRQ: X.Y No irq handler for vector (irq -1)

Environment

  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Intel 5500 and 5520 chipsets (revision 0x13)
  • Intel X58 chipset (revisions 0x12, 0x13, 0x22)

Subscriber exclusive content

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Current Customers and Partners

Log in for full access

Log In

New to Red Hat?

Learn more about Red Hat subscriptions

Using a Red Hat product through a public cloud?

How to access this content