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持续的 tx 功率变化

tag-icon • tag-icon 18.04 wireless intel iwlwifi
持续的 tx 功率变化

我使用以下命令来设置我的笔记本电脑的发射功率：

sudo iwconfig wlp2s0 txpower 19

但是，当我重新启动系统时，txpower 会重置为默认值（对于我的机器，该值为 21）。如何才能使此更改在电源循环期间保持不变？

编辑：

sudo iw reg 获取：

global
country 00: DFS-UNSET
    (2402 - 2472 @ 40), (N/A, 20), (N/A)
    (2457 - 2482 @ 20), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
    (2474 - 2494 @ 20), (N/A, 20), (N/A), NO-OFDM, PASSIVE-SCAN
    (5170 - 5250 @ 80), (N/A, 20), (N/A), AUTO-BW, PASSIVE-SCAN
    (5250 - 5330 @ 80), (N/A, 20), (0 ms), DFS, AUTO-BW, PASSIVE-SCAN
    (5490 - 5730 @ 160), (N/A, 20), (0 ms), DFS, PASSIVE-SCAN
    (5735 - 5835 @ 80), (N/A, 20), (N/A), PASSIVE-SCAN
    (57240 - 63720 @ 2160), (N/A, 0), (N/A)

phy#0 (self-managed)
country US: DFS-UNSET
    (2402 - 2437 @ 40), (6, 22), (N/A), AUTO-BW, NO-HT40MINUS, NO-80MHZ, NO-160MHZ
    (2422 - 2462 @ 40), (6, 22), (N/A), AUTO-BW, NO-80MHZ, NO-160MHZ
    (2447 - 2482 @ 40), (6, 22), (N/A), AUTO-BW, NO-HT40PLUS, NO-80MHZ, NO-160MHZ
    (5170 - 5190 @ 80), (6, 22), (N/A), AUTO-BW, NO-HT40MINUS, NO-160MHZ
    (5190 - 5210 @ 80), (6, 22), (N/A), AUTO-BW, NO-HT40PLUS, NO-160MHZ
    (5210 - 5230 @ 80), (6, 22), (N/A), AUTO-BW, NO-HT40MINUS, NO-160MHZ
    (5230 - 5250 @ 80), (6, 22), (N/A), AUTO-BW, NO-HT40PLUS, NO-160MHZ
    (5250 - 5270 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
    (5270 - 5290 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
    (5290 - 5310 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
    (5310 - 5330 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
    (5490 - 5510 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
    (5510 - 5530 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
    (5530 - 5550 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
    (5550 - 5570 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
    (5570 - 5590 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
    (5590 - 5610 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
    (5610 - 5630 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
    (5630 - 5650 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
    (5650 - 5670 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
    (5670 - 5690 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
    (5690 - 5710 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40MINUS, NO-160MHZ, PASSIVE-SCAN
    (5710 - 5730 @ 80), (6, 22), (0 ms), DFS, AUTO-BW, NO-HT40PLUS, NO-160MHZ, PASSIVE-SCAN
    (5735 - 5755 @ 80), (6, 22), (N/A), AUTO-BW, NO-HT40MINUS, NO-160MHZ
    (5755 - 5775 @ 80), (6, 22), (N/A), AUTO-BW, NO-HT40PLUS, NO-160MHZ
    (5775 - 5795 @ 80), (6, 22), (N/A), AUTO-BW, NO-HT40MINUS, NO-160MHZ
    (5795 - 5815 @ 80), (6, 22), (N/A), AUTO-BW, NO-HT40PLUS, NO-160MHZ
    (5815 - 5835 @ 20), (6, 22), (N/A), AUTO-BW, NO-HT40MINUS, NO-HT40PLUS, NO-80MHZ, NO-160MHZ

消息 | grep-i tx：

[    5.622476] Bluetooth: hci0: command 0xfc09 tx timeout
[    8.669328] wlp2s0: Limiting TX power to 21 (24 - 3) dBm as advertised by 9a:15:54:aa:a5:df

答案1

我认为，如果您的监管域设置正确，路由器和无线设备将更好地管理 TX 功率。您检查了您的监管域并得到：国家 00：DFS-UNSET。

如果您选择 00，则这是一个通用的设置。请在此处查找您的设置：http://en.wikipedia.org/wiki/ISO_3166-1_alpha-2然后暂时设置一下：

sudo iw reg set IS

当然，如果不是冰岛，请替换您的国家代码。永久设置它：

sudo nano /etc/default/crda

将最后一行改为：

REGDOMAIN=IS

仔细校对，保存并关闭文本编辑器。

重启后，TX 功率报告什么？

iwconfig

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