When I powered the Raspberry Pi 3B on (I use Gentoo), WiFi was working. After reboot, it stopped working, both ip link list and ifconfig commands do not list it (they do if WiFi is working).

I am experimenting a bit, after some reboots it was working, sometimes not.

I think it could be caused by power supply that not enough (it is only 2A). When I was using Raspbian, WiFi was working without problems with the same supply.

I tried to reboot (shutdown -r now) 6 times, 5 times it was OK. When I tusrned it off (shutdown -h now) and reconnected supply 6 times, it was OK only 2 times.

What can cause this problem?

  • 1
    What exactly is your question? You sound like you have a promising path to test - replacing the power supply. Though you should check the voltage (carefully). It could also be the usb cable. – NomadMaker Jul 28 '18 at 15:38
  • @NomadMaker I tried also 3A supply, it was still the same. – jiwopene Jul 28 '18 at 15:41
  • I compiled WiFi driver as module. It looks it works now. – jiwopene Jul 28 '18 at 16:09
  • If you have found an answer, can you please make an answer to finish this question? – Ingo Jul 28 '18 at 16:15
  • @Ingo I was not sure. (I am still not sure it will work "forever") – jiwopene Jul 28 '18 at 16:16

I compiled the WiFi driver as module. It works without any problems.

I think it is because WiFi is now started when is the supply not as loaded as during early boot phases (kernel load, HW starting).

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