安装RTW88 WiFi驱动程序

Question

我有一个Ubuntu18.04的ASUS X405U。我从一开始就遇到了无线连接的问题，直到现在我都能解决它们。

最近，有时候连接非常慢，而且wifi一直在随机失败(它只是“消失”了)，所以我不得不运行sudo service network-manager restart，甚至有时它不工作，我需要重新启动。

我知道有一些新的Realtek驱动程序，RTW88，我希望它能解决所有问题。我怎么安装它？

如果你需要任何系统信息，请告诉我。谢谢。

lspci -nnk | grep 0280 -A3的输出：

03:00.0 Network controller [0280]: Realtek Semiconductor Co., Ltd. RTL8822BE 802.11a/b/g/n/ac WiFi adapter [10ec:b822]
    Subsystem: AzureWave Device [1a3b:2950]
    Kernel driver in use: r8822be
    Kernel modules: r8822be, wl

具有wifi工作的nmcli dev wifi list输出：

IN-USE  SSID           MODE   CHAN  RATE        SIGNAL  BARS  SECURITY  
*       Familia Munoz  Infra  6     130 Mbit/s  65      ▂▄▆_  WPA1 WPA2 

无线网络崩溃后nmcli dev wifi list的输出：

IN-USE  SSID  MODE  CHAN  RATE  SIGNAL  BARS  SECURITY

具有wifi工作的dmesg | grep -e r88 -e rtl输出：

[   38.974962] r8822be: module is from the staging directory, the quality is unknown, you have been warned.
[   38.988582] r8822be 0000:03:00.0: enabling device (0000 -> 0003)
[   39.016594] r8822be: Using firmware rtlwifi/rtl8822befw.bin
[   39.070299] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[   39.071704] r8822be: rtlwifi: wireless switch is on
[   40.205859] r8822be 0000:03:00.0 wlp3s0: renamed from wlan0

故障后的输出与最后一行相同

[ 5263.365570] r8822be: AP off, try to reconnect now

故障后dmesg | grep -e r88 -e rtl的新输出：

[   33.869049] r8822be: module is from the staging directory, the quality is unknown, you have been warned.
[   33.882232] r8822be 0000:03:00.0: enabling device (0000 -> 0003)
[   33.917453] r8822be: Using firmware rtlwifi/rtl8822befw.bin
[   33.933010] ieee80211 phy0: Selected rate control algorithm 'rtl_rc'
[   33.933226] r8822be: rtlwifi: wireless switch is on
[   34.105866] r8822be 0000:03:00.0 wlp3s0: renamed from wlan0
[ 3868.671203] r8822be: rtlwifi: wireless switch is on
[10093.691441] r8822be: rtlwifi: wireless switch is on

我相信，每次我重新启动网络管理器时，都会有一个“开关已接通”的线路。

3573故障后dmesg | grep wlp的输出(短)：

[   36.613832] r8822be 0000:03:00.0 wlp3s0: renamed from wlan0
[   56.161528] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[   56.789080] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[   56.876570] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[   60.536567] wlp3s0: authenticate with 8c:e1:17:89:62:5a
[   60.574341] wlp3s0: send auth to 8c:e1:17:89:62:5a (try 1/3)
[   60.576518] wlp3s0: authenticated
[   60.580053] wlp3s0: associate with 8c:e1:17:89:62:5a (try 1/3)
[   60.583760] wlp3s0: RX AssocResp from 8c:e1:17:89:62:5a (capab=0x1411 status=0 aid=2)
[   60.584167] wlp3s0: associated
[   60.635162] IPv6: ADDRCONF(NETDEV_CHANGE): wlp3s0: link becomes ready
[   60.637428] wlp3s0: Limiting TX power to 30 (30 - 0) dBm as advertised by 8c:e1:17:89:62:5a
[ 3573.615659] wlp3s0: deauthenticating from 8c:e1:17:89:62:5a by local choice (Reason: 3=DEAUTH_LEAVING)
[ 3578.411916] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 3579.008456] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 3579.580439] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready
[ 3579.581045] IPv6: ADDRCONF(NETDEV_UP): wlp3s0: link is not ready

Answer 1

首先，检查路由器中的设置。优先考虑WPA2-AES；没有任何WPA和WPA2混合模式，当然也不是TKIP.第二，如果您的路由器能够达到N个速度，那么在2.4个GHz频段内，信道宽度为20 GHz，而不是自动的20/40 MHz，可能会更好地连接起来，尽管这可能会影响N个速度。我推荐一个固定的通道，要么1，6或11，而不是自动频道选择。另外，要确保路由器不被设置为只使用N个速度；自动B、G和N是首选。

接下来，我建议显式地设置您的管理域。检查你的：

sudo iw reg get

如果你得到00，那是一个单一大小-也许-适合-所有的设置。在这里找到您的：http://en.wikipedia.org/wiki/ISO_3166-1_阿尔法-2然后临时设置它：

sudo iw reg set IS

当然，如果不是冰岛，就用你的国家代码来代替吧。永久设置：

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。

我曾经处理过不止一种情况，在这种情况下，SSID或路由器的名称中的一个空间阻碍了平稳、持续的连接。我建议您将SSID的名称更改为FamiliaMunoz或Familia_Munoz或其他类似的名称，不要在名称中添加任何空格。

在进行这些更改后，重新启动路由器。请进行测试并报告。