Raspberry pi 2B+ loses Wifi connection / USB Wifi dongle

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binderth asked Sep 30, '21

Raspberry pi 2B+ loses Wifi connection / USB Wifi dongle

I'm using Venus OS 2.73 on a Raspberry Pi 2B+ with a Wifi dongle.

Wifi works fine, but after a while Venus OS goes offline and shows "error" on the Wifi, and I have to manually reboot the Pi. I know, there's a "power saving" mode in Raspberry Pi regarding Wifi and normally I would add to my /etc/network/interfaces

wireless-power off

But from what I see inside that file, connman is used for Internet connectivity, which I don't know and I didn't find powersaving options in connman man-pages...

Is there some way I can deactivate power saving - or do something on my Pi losing Wifi? (the router is right next to the Pi, so signal is strong enough.

strangely enough, power_save seems to be off anyways:

root@venus:~# iw wlan0 get power_save
Power save: off

Raspberry Pi error wifi

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Answer 1 · 2022-01-22T11:05:42Z

aph answered · Jan 22, 2022 at 11:05 AM

Hi binderth, I seem to have the exact same problem, once every 24 hours wifi stops working and can only be restarted by reboot.
did you find a solution to this?

CU >>> Arne <<<

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Answer 2 · 2023-02-06T03:47:26Z

chuckenglehart answered · Feb 06, 2023 at 03:47 AM

I am seeing the same issue with an older Netgear USB WiFi dongle with VenusOS v2.92 on a Pi 2B. 5v/2A power supply. I have tried this dongle on other non-pi machines and haven't seen an issue.

From lsusb:

Bus 001 Device 006: ID 0846:6a00 NetGear, Inc. WG111v2 54 Mbps Wireless [RealTek RTL8187L]

So far I am in the same spot, tried the same commands.

For the next few days I am just going to try having a cron job reboot the pi every 4 hours to see how that works.

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chuckenglehart commented · Feb 06, 2023 at 01:08 PM

I got rid of my cronjob, and clicked the option to reboot after no network activity, and set the threshold to 3 minutes.

While this isn't a fix, it has been a good workaround.

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