I have setup a Pi Zero v 1.1 & Camera with latest Raspian Buster Lite to replace an old Drone Camera which has failed. I have it running as a router using this url and streaming the video fine from here. The problem is the WiFi keeps cutting out every 30 - 60 secs and staying off for 30 to 120 secs. By a lot of searching I discovered that the WiFi Power Saving was enabled by using this command:

sudo journalctl | grep brcmfmac

gave this result:

brcmf_cfg80211_set_power_mgmt: power save enabled

So more searching I found this from this forum as a way to disable the Power saving which works as shown by issuing the command:

sudo systemctl enable [email protected]

and then the command above to show the result on a reboot:

brcmf_c_preinit_dcmds: Firmware: BCM43430/1 wl0: Oct 22 2019 01:59:28 version (r723000 CY) FWID 01-3b33decd
brcmfmac: brcmf_cfg80211_set_power_mgmt: power save enabled
brcmf_cfg80211_set_power_mgmt: power save disabled

It would seem that the Power Saving has been disabled, but this has made no difference to the behavior. The WiFi is still cutting out.

I would be delighted to overcome this and save buying a new drone!

  • What's your question?
    – Dougie
    Feb 10, 2021 at 20:14
  • Am I correct in inferring that your issue is the WiFi connection and the fact there is a camera for use in a drone is extra information about context of the application (but there are no issues with that side of things)? To help us provide a useful answer, what are the minimum set of steps you would follow (from fresh image) in order to observe this issue whereby the WiFi drops out? Feb 11, 2021 at 7:44
  • My question is - How can I stop the WiFi dropping out despite having disabled the Power Saving.
    – themetman
    Feb 11, 2021 at 7:44
  • The Camera side of things works perfectly. There is no WiFi interference (nearest house is a good kilometer away) I have two access points one on channel 3 another on channel 11. I have set the Pi at channel 7. I have a WiFi scanner on my phone. I can see the Pi come up on channel 7 for up to a couple of minutes then drop out for 30secs to 2 mins and so on. When the WiFi is up I can connect fine and see the streaming video. So why is the WiFi dropping out despite being disabled
    – themetman
    Feb 11, 2021 at 7:50
  • Powersaving mode isn't an issue anymore since years, no matter if it is off or on. Don't waste your time with it.
    – Ingo
    Feb 11, 2021 at 20:25


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