I turned off my computer for an hour then opened it. At boot screen it showed some text (attached the picture).

My kernel is 6.5.2-arch1-1. And my wifi adapter is MEDIATEK Corp. MT7921K (RZ608) Wi-Fi 6E 80MHz.

I did some tests and:

In lspci -k, it doesnt show kernel driver in use.

output:

04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 15)
Subsystem: Micro-Star International Co., Ltd. [MSI] RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
Kernel driver in use: r8169
Kernel modules: r8169
05:00.0 Network controller: MEDIATEK Corp. MT7921K (RZ608) Wi-Fi 6E 80MHz
Subsystem: MEDIATEK Corp. MT7921K (RZ608) Wi-Fi 6E 80MHz
Kernel modules: mt7921e

as you can see it shows for my ethernet driver but not for Wi-Fi driver.
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I solved the issue by powering my laptop off, unplugging the charging cable then waiting for 5-10 minutes. When i booted up, the Wi-Fi was working.

I found this solution on the internet and it worked. And i dont think this is the first time i live this issue. I lived issues about Wi-Fi hardware not working in both my Windows and Endeavour OS with this same hardware. I think the problem is bigger than some OS specific driver. I do not use Windows nor Endeavour now. I use Arch and i still saw this. Back then i had no idea about this and problem got solved itself (i didnt care so much about it back then). So i solved the problem unconciously, if you can call it a solve.


Here are the people who lived the issue on other distros.

https://askubuntu.com/a/1348844 -- Here is the solution abd bug by a guy who lived the problem in Ubuntu.

https://github.com/openwrt/mt76/issues/548 -- And here is an upstream bug report. Reported wrote the solution too.