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yoctobitbake

error when starting wifi interface: failed to load regulatory.db

I bitbake'd my yocto image but when I start my wifi interface on the target I see an error such as:

platform regulatory.0: Direct firmware load for regulatory.db failed with error -2
cfg80211: failed to load regulatory.db

How can I fix this?

Solution

  • You need to add the wireless-regdb:

     IMAGE_INSTALL_append = " wireless-regdb-static"

    Note the static which will include the necessary firmware files. If the problem persists you may suffer from a bug which has been discussed is this thread. A solution can be found within this thread as well, which would be

    Download wireless-regdb 2017.12.23, untar, and copy regulatory.db and regulatory.db.p7s to /lib/firmware;.

    [See reply by gerardo diaz]. In my case this made the error disappear during boot.

    Furthermore, ensure that the kernel modules are enable as Cleiton Bueno pointed out.

    Note: I'm posting this rather for documentation and hope this might help others, too.