Turris Omnia WiFi cards dectection sometimes fails
ls: /sys/bus/pci/devices/0000:00:01.0/000*/iee*/phy*: No such file or directory
This happens most likely because wifi cards are not yet detected at time of board script execution.
/etc/board.d scripts are executed as one of the last steps in preinit but all kernel modules are loaded right after preinit. The drivers are not built in so the devices are just not available.
The result of this is that led for wifi card is just not configured to blink with appropriate device. In effect it is set to not blink at all.