Laird Connectivity is now Ezurio/filters:background_color(white)/s3fs-public/2018-10/60_2230C_straight.png)
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Answer
On a linux system if the dmesg is reporting an unknown symbol this is usually due to one of the following:
- The backports drivers didn't get compiled against the correct kernel.
- WLAN, CONFIG_BT, and WIRELESS were not removed from the kernel menuconfig.
- backports was compiled with different flags than how the kernel was compiled.