SMBus base address unitialized

When your system or your virtualization software (such as VirtualBox) doesn’t provide the System Management Bus (SMBus) which is a derivate of the I2C communication protocol, then your kernel will report this at boot time. You can also check with dmesg if there’s a SMBus error.

dmesg | grep smbus
[    5.242007] piix4_smbus 0000:00:007.0: SMBus base address unitialized - upgrade BIOS or use force_addr=0xaddr

Fix it!

Tell your system not to load the module i2c_piix4 on boot time. To do so execute

sudo echo "blacklist i2c_piix4" >> /etc/modprobe.d/blacklist.conf

After this change you must recreate the initial RAM disk.

Arch Linux

sudo mkinitcpio -p linux


sudo update-initramfs -u -k all

Reboot and verify your change

sudo shutdown -r now

The error message should have gone.

1 Comment

  1. JP

    Hello, after I have finally managed to install Arch Linux, I would like to know how I can access a console in the first place? I’m still a little confused regarding all the shells Linux has to offer, so I don’t know how and where I have to enter the commands above.

    Thanks in advance

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