The instant I disconnected my USB hub WiFi was restored. Which is great, but still BS. I need the hub.
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WIFI issues with Big Sur
- Thread starter asflyboy
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I fixed the wifi disconnects to my MBP 16, by turning off the "automatic" selection of wifi channels in Ubiquiti, and manually set the wifi channels to be unique on each access point and my disconnects went away. I chose the least used channels based on the wifi scan of my environment. My older devices weren't dropping of the network, just my new MBP 16. It's been fine for over a week now since I made the wifi channel change.
Mine has been working just fine.
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My ethernet drops often after updating to Big Sur on my 2018 Mac mini. Looking in the Network settings it says no cable is connected, which it is. Never had these issues on Catalina. My collegaue is running Big Sur on a M1 Macbook Air, and he experiences the same issue, but over wifi. Really annoying! Seriusly considering going back to Catalina, which in its current version runs smooth and stable. We are nearing a .3 update for Big Sur, impressive that it is still so buggy.
Hi all, I'm a recent updater to an M1 Mac mini and Big Sur, I have an ethernet connection to my router and wifi, I want to use my ethernet for stability and speed but then function like sidecar don't work, if wifi is on then it 'takes over' for all traffic. Is there a way to use ethernet for primary traffic but have wifi on for features such as sidecar? thanks
Two things.
In network system preferences, click the gear in the bottom of the interface window and "Set Service Order". Make sure the ethernet is on top. That has it look there first. If that still doenst work right, you can go into the wifi interface and disable IPv4. Just turn it to off. This will allow the Wifi connection to stay on without getting an internet connection. That should still let it communicate with the Sidecar iPad. Id do both.
I have had an M1 Mac Mini since December 2020 and the WiFi worked perfectly ok with either 5GHz and 2.4 GHz connections. In the last couple of weeks I have noticed that the 2.4 Ghz connection is no longer connecting. It can detect the connection to the router but requires the password to be entered but then fails to connect. I have tried connecting to a portable 4G mobile router but that will not connect, it uses 2.4 GHz. I have also tried connecting to my iPhone personal hotspot but that also fails. My iPad and iPhone happily connect to both the 2.4GHz and 5GHz channels on my router and so does my older Mac Mini (Intel 2011 chip). It does seem that this is a software issue with the Mac OS Big Sur 11.2.3 should I report this to Apple or hope that they will resolve it in a later release given that many people are talking about WiFi problems with M1 on different Macs?
Yes I’ve seen reports that substantiate this. Big reports, people talking to Apple in escalations, using betas w issues fixed etc
Thank you for your reply which confirms my perception of the issue. At present I am now using a wired ethernet connection to a range extender which is working well and with impressive speed. My concern is to ensure that the WiFi connection is working if I need to move the computer elsewhere. Otherwise the new Mac Mini does seem to be a great piece of kit, I just hope that Apple will sneek in an update soon that solves the WiFi problem.
Same boat same machine. But not using WiFi. Colleagues who i support who have m1 MacBook pros share your WiFi pain.
Thanks for the help, checked the first bit and Ethernet was already top of the priority list, I don’t / can’t see an IPv4 option, could you possibly step me through where to look?
Go to system prefs/ network
then click on wifi
then click the advanced button
then the TCP/IP tab
Set configure IPv4 to off
Now your machine will still link to your wireless network but it wont do internet things. Should still work with local services like Sidecar. Let us know if it works out. It should!
No problem. Just remember that if you ever want to use the Wi-Fi for internet you will need to re-enable IPv4
Same problem with a MBP 2015 15". Wifi looks connected, but no actual traffic is being made. No page can be loaded. The only option seems to be a restart. This never happened before Big Sur with this machine.
Weird thing is that it doesn't always do this. It's not after each wake from sleep. It's only sometimes. And it's quite annoying. Has anyone reported this issue to Apple for fixing? This is 100% software issue, and only starting with Big Sur.
Weird thing is that it doesn't always do this. It's not after each wake from sleep. It's only sometimes. And it's quite annoying. Has anyone reported this issue to Apple for fixing? This is 100% software issue, and only starting with Big Sur.
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I'm curious about this. What is the reasoning? The default MTU is set to 1500 on my machine.
Generally, I'm wondering how to go about diagnosing the issues I'm having. My Wifi stays connected, but randomly, a site will "hang" and fail to load. I'm wondering where along the network stack this is happening. Is Safari to blame? The DNS cache? Random interference with the Wifi signal, someone's baby phone or microwave? I don't know how to go about ruling out the options.
The MTU size is considered to be one of the first steps in troubleshooting when you find that your Internet connection speed isn’t as fast as you would expect, or if you experience other performance-related issues.
Thankfully, this process is both quick and easy to perform; no additional hardware or software is needed. You can perform the testing and make the necessary changes with just a computer and your router.
The larger the MTU size is, the more data that can fit into fewer packets. This generally results in a faster and more efficient transmission of data across your network.
On the other hand, if an error occurs, the packet will take longer to re-transmit. Also, more data within fewer packets can result in the packets being bloated.
Larger packets are more likely to suffer from delays and even corruption. A greater MTU size can also increase latency, whereas setting it to a smaller number can help improve the overall latency.
Therefore, you should change the MTU size to be the maximum it can be without any detrimental effects. It may take a few tries to find the best size, but is worth the time investment to help optimize the performance of your network.
Anyone having trouble after upgrading router to Wi-Fi 6+? Some, yes. Routers have their own cpu, memory, and are caching traffic. For me, a decade of "why do I need to use airplane mode and/or toggle Wi-Fi odd/on" went away... Sometimes it looked like latest iphone was at fault - and why I migrated over to Samsung flagship phones.