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VirtualBox: piix4_smbus Error [fix]

Post Ever notice this annoying (but harmless) error when booting up a Linux VM in Virtualbox?

piix4_smbus 0000.00.07.0: SMBus base address uninitialized - upgrade bios or use force_addr=0xaddr

Here’s how to fix it:

  1. Check to see if module is loaded by running this command: lsmod | grep i2c_piix4
  2. If so, blacklist it in /etc/modprobe.d/blacklist.conf by adding the following line: blacklist i2c_piix4
  3. Finish by updating the initramfs: update-initramfs -u -k all
  4. Done!