• CalcProgrammer1M
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    1 year ago

    You also need to load the i2c driver for your motherboard. i2c-dev is the framework for accessing i2c from userspace but does not provide the actual hardware interface. This is provided by another module. For Intel boards, this is i2c-i801. For AMD, this is i2c-piix4.

    It doesn’t hurt to load both.

    sudo modprobe i2c-piix4

    sudo modprobe i2c-i801

    • Dremor@lemmy.world
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      1 year ago

      Good to know. Strangely enough i2c-dev seem to be enough to detect my RAM, without loading i2c-piix4 (Asus Dark Hero). Those were the only devices not detected without i2c.

      • CalcProgrammer1M
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        1 year ago

        It’s possible that i2c-piix4 is already being loaded for some reason or that the driver is compiled into your kernel rather than as a module. Kernel configurations vary across distros. Glad it’s working either way!