From d108ea7613f2c2ec6b313fc21c60339bb3b12834 Mon Sep 17 00:00:00 2001
From: Z4HD <Z4HD@outlook.com>
Date: Sun, 16 Oct 2022 23:24:45 +0800
Subject: [PATCH] Add new post

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+---
+title: Fedora 34 中无法修改无线网卡的 county code
+subtitle: ""
+date: 2022-10-16T23:19:29+08:00
+lastmod: 2022-10-16T15:23:17.002Z
+draft: false
+tags:
+  - GNU/Linux
+  - Fedora
+categories:
+  - 运维
+  - 故障排除
+---
+
+## 症状
+
+无法正常设置WiFi Country Code，也无法通过  `iw reg get` 查看到正确的 Country Code 信息。
+
+<!--more-->
+
+## 问题原因
+
+f34的软件源中的 `crda` 已被 `wireless-regdb` 取代。
+
+## 解决方案
+
+```shell
+sudo dnf install wireless-regdb
+```
+
+安装完成后重启，使用 `iw reg get` 查看到的区域信息应恢复正常。
+
+```shell
+$ iw reg get
+global
+country US: DFS-FCC
+        (2402 - 2472 @ 40), (N/A, 30), (N/A)
+        (5170 - 5250 @ 80), (N/A, 30), (N/A), AUTO-BW
+        (5250 - 5330 @ 80), (N/A, 24), (0 ms), DFS, AUTO-BW
+        (5490 - 5730 @ 160), (N/A, 24), (0 ms), DFS
+        (5735 - 5835 @ 80), (N/A, 30), (N/A)
+        (57240 - 70200 @ 2160), (N/A, 40), (N/A)
+
+```
+
+后续便可以通过 `sudo iw reg set` 设置无线网卡的 Country Code。
+
+## Reference
+
+- [e877342](https://src.fedoraproject.org/rpms/crda/c/e877342d3cbb4b7b287db4e2d16771bbec6d6c7a
+) Obsoleted by wireless-regdb