I'm having a strange Wi‑Fi problem on Linux Mint 22.3 Cinnamon and previously experienced the same thing on CachyOS. My home network appears to stop working unless I click the Wi‑Fi icon and leave the network menu open; as soon as I close it, the connection often stops again. The issue is inconsistent—some sessions work normally, while others are nearly unusable. Connecting through my phone's hotspot works without problems, and the same home network works normally in Windows. I've already tried changing power-management settings, disabling Secure Boot and Windows Fast Startup, and I'm dual-booting with each operating system on separate storage. My system has a Ryzen 5 3550H, 16 GB RAM, and a Realtek RTL8822CE wireless card. What could cause this, and how can I fix it?
3 Answers
Windows Fast Startup can sometimes leave hardware in an odd state after shutdown, so disabling it is a good troubleshooting step for dual-boot systems. Also check whether the RTL8822CE driver or firmware package is up to date, since intermittent behavior with that adapter can be driver-related.
A factory reset of the wireless adapter may clear a bad saved state or configuration. After resetting it, reconnect to the home network and remove any old saved connection profile if the problem returns. In this case, resetting the Wi‑Fi card resolved the issue.
Since the phone hotspot works but the home network behaves strangely, the problem may be specific to the router’s connection with the Realtek card rather than a general Linux networking failure. Restarting or resetting the router could help, and checking its 2.4 GHz/5 GHz settings may also be worthwhile.
That was confusing because the same home network works fine on my phone and in Windows, but the issue does seem specific to this Linux setup.

Fast Startup was already disabled, so that didn’t change anything.