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发布于 2012 年 6 月, 型号 A1278. Intel 处理器，支持 Turbo Boost, 最多 512 MB DDR5 显存

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WiFi not working sometimes

Bought the MacBook yesterday online, it worked that night. Today, I am having issues with the WiFi connectivity of the laptop. I can connect to a hotspot just fine, but whenever I connect to my regular network (WPA 2, hidden), it has full bars, but WiFi isn't working. I pinged google through terminal and I am getting the error "Request timeout for icmp_seq" or "no route to host". Sometimes the WiFi does work, but is very unreliable. I have another of the same MacBook, but it is running Yosemite. It can connect to the network just fine. I have tried resetting the PRAM and a dns flush. Still not working. Any help would be appreciated. Thanks

Edit: The MacBook that is broken is running macOS Catalina. The one that is working is on OS X Yosemite. This issue is also occurring in Recovery Mode

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WiFi antenna cable was cut in half. Couldn't even tell until I replaced hinges.

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You’ll need to clear the WiFi setting cache as you have something getting in the way.

You might want to fully wipe the drive (format it) and upgrade to Catalina which is as high as Apple supported on your system.

Sadly, the world has press onward with newer HTML code and you’ll want to run OpenCore to jump to a newer MacOS so you can gain the better version of Safari or other web browser of your choosing as the older versions have issues.

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The MacBook is running Catalina but the other one I have, which is working, is on Yosemite. I should have mentioned this in the post

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The issue is also happening in Recovery Mode, so I don't know if clearing wifi cache or wiping the drive will fix it.

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@ryzobyte - How about downloading the Catalina OS installer file and setup a bootable OS installer USB thumb drive. If you have a spotty connection to the internet (including WiFi) I find this approach is just faster and better!

Here’s the links:

▪️How to download and install macOS

▪️Create a bootable installer for macOS

This way you can fully wipe the drive down booting up under the USB drive.

This still might not solve your issue but it’s the best first step!

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@danj I just reinstalled macOS Catalina via internet recovery but it is still doing the same thing. Any ideas of what could be wrong?

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@ryzobyte - How where you connecting to the internet, I won’t trust the WiFi at this point.


Upgrading won’t clear the caches, you need to either delete them manually or as I was aiming you to just wiping the drive down fully and rebuild.

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