Wi-Fi Issue on 2.4GHz. 5GHz Is Fine

gomertose on 12/11/2024 - 17:40
Last edited 12/11/2024 - 19:25 by 1 other user

I turned off my home modem and Asus RT-AX56U router when on holiday.

After returning, I have had issues with the connection to the 2.4Ghz band. The 5G band seems fine.

No settings have changed since I turned the router on again.

When I try to connect to the 2.4Ghz band with my mobile, it will try and then "can't connect". Since the mobile can connect to the 5G, it's not an issue, but the problem is with devices like the topo cameras and roborock vacuum which only use 2.4Ghz.

The strange thing is, after I reboot the router, my mobile and the other devices can connect to 2.4Ghz and everything seems all and good, but something happens during the day which makes the devices "drop out" and unable to reconnect to 2.4Ghz.

The only device that seems to maintain a connection to 2.4Ghz when the others drop out is the meross garage door opener (can see that it is up for ##hrs - since the time of router reboot).

I will take a screenshot of the wifi settings after work today and update.

Internet ASUS Wireless Router

Comments

  • MS Paint on 12/11/2024 - 17:54
    +3

    Imagine that your floors don't get vacuumed because your router is playing up.

    What a time to be alive.

  • ihfree on 12/11/2024 - 18:05
    +1

    Try some of the following:

    • check router logs - see if anything stands out
    • turn it in and off again
    • update firmware
    • factory reset and test with fresh configuration
    • contact Asus support
    • gomertose on 12/11/2024 - 18:29

      Well as mentioned in the original post. Rebooting the router seems to allow all devices to connect to 2.4Ghz, but then at some point later on something must change and they get dropped.

      I will have a closer look at the logs tonight.

      • ihfree on 12/11/2024 - 18:38

        There are also a few options that you could look into disabling(beam forming springs to mind looking at my router's settings)- would google something along the lines of Asus wifi drops to find out what they are.

  • psyren89 on 12/11/2024 - 18:13

    Download Wifiman and run some diagnostics.

  • Porker on 12/11/2024 - 18:32
    +2

    I had another ASUS router that had known issue with 2.4GHz. Essentially the same symptoms as you've mentioned - everything is fine on 5Ghz, but 2.4Ghz was flaky or dropped out.

    I ended up contacting ASUS and they replaced the unit and issue has not re-occurred.

  • Ocker on 12/11/2024 - 18:39

    Is your microwave oven, or the automatic garage door opener interfering?

    • gomertose on 12/11/2024 - 18:48

      Never had an issue prior before I turned everything off for a month, so I highly doubt it's due to these. Microwave is an old Sharp which is more than a decade old and no issues prior.

  • Ozbar Gain on 12/11/2024 - 18:49

    A workaround would be to create 2 distinct SSIDs for 2.4 and 5ghz

    • gomertose on 12/11/2024 - 19:11

      They are already on different SSIDS

    • ihfree on 12/11/2024 - 19:21

      Setting is called Smart Connect and off by default.

  • trex on 12/11/2024 - 19:10

    Had similar issue with Asus RT-AC68U that started occurring out of no where. All 2.4Ghz wifi devices would drop out and fail to reconnect. Check for new firmware, updating solved my issue.

  • bokka on 12/11/2024 - 20:55
    +1

    Try forcing the wifi channel.

    When you reboot your router and the devices can connect ok note down the wifi channel. Then go into the settings and turn off auto channel selection and force the channel to what was working.

  • skid on 12/11/2024 - 21:41

    Had this happen but only for 10 minutes every hour. To fix it change:

    Wireless > Protected Management Frames > Disable

  • jattsta on 13/11/2024 - 08:29

    as others mentioned: firmware update. disable 5ghz band and see if issue persists. factory reset.

  • Mavryk on 13/11/2024 - 09:09
    +1

    First of all, I would check to see if a device on your network is causing the issue. Try turning off all the devices on the 2.4 band and then try turning them back on one day at a time to see if one of them starts causing the issue.

    Another option could be the channels. While there are bands of wifi, like 2.4, 5, and now 6, there are channels within them. When you reboot your router, its probably looking for the least used channel to avoid interference with other wifi routers that use the same bands. So if your neighbours have wifi thats blasting out, it could be drowning out your signal. LinusTechTips did a video recently that goes into more details, called something like “too many wifi”. He explains the channels, and how to find the optimal one for you. It could be the culprit if nothing changes on your network daily. Perhaps next doors router or access points keep changing their channels to find the one with the least amount of traffic and it floods yours.

  • Cyberdon on 13/11/2024 - 10:14

    Try loging into the router and click the Wireless 2.4G configuration. Check for the setting Max Clients. Check the number in the field and increase it to a higher one. The maximum allowed is 16 i think.

  • Ramrunner on 13/11/2024 - 16:29

    Also - and I apologise I don't know the layout of Asus nor it's options but I came upon this yesterday with a crappy Telstra modem. It may help or may be a waste of your time.

    Make sure Band Steering is off for the 2.4GHz channel or try it for both.

    For some reason even when Telstra modem is split into mutliple frequencies, it STILL enables band steering for 2.4Ghz, which causes devices to initially connect and then drop.

    All the best.

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