手机卡盟网站建设,asp.net网站开发与项目实战,html5商业网站开发北大青鸟,建筑方案设计考试前言:树莓派上的WIFI驱动类型比较多#xff0c;经常有更好驱动的需求本文给出RealTek的无线WIFI模组#xff0c;8821CU的驱动更新办法步骤第一 通过其他方式连接网络小车通过网线或者老的WIFI连接到网络上第二 构建驱动模块并下载驱动首先#xff0c;我们需要打开一个ubuntu…前言:树莓派上的WIFI驱动类型比较多经常有更好驱动的需求本文给出RealTek的无线WIFI模组8821CU的驱动更新办法步骤第一 通过其他方式连接网络小车通过网线或者老的WIFI连接到网络上第二 构建驱动模块并下载驱动首先我们需要打开一个ubuntu的命令行窗口进入bash用三个键的联合命令就可以打开【CTRL】【Alt】【T】构建一个存放驱动模块的文件夹mkdir -p ~/8821CU/
cd ~/8821CU2.下载模块git clone https://github.com/brektrou/rtl8821CU.git3 进入刚才文件夹cd rtl8821CU4.进入Jetbot的驱动配置目录准备构建新的驱动模块执行下面两行命令sudo cp /lib/modules/$(uname -r)/build/arch/arm64/Makefile /lib/modules/$(uname -r)/build/arch/arm64/Makefile.$(date %Y%m%d%H%M)
sudo sed -i s/-mgeneral-regs-only// /lib/modules/$(uname -r)/build/arch/arm64/Makefile5.更新新的驱动模块sudo apt-get install nano
nano ~/8821CU/rtl8821CU/Makefile6.修改编译文件Makefile将文件中102行左右的配置##################### Platform Related #######################
CONFIG_PLATFORM_I386_PC y
CONFIG_PLATFORM_ARM_RPI n
CONFIG_PLATFORM_ARM64_RPI n
CONFIG_PLATFORM_ANDROID_X86 n
CONFIG_PLATFORM_ANDROID_INTEL_X86 n
CONFIG_PLATFORM_JB_X86 n
CONFIG_PLATFORM_ARM_S3C2K4 n改为##################### Platform Related #######################
CONFIG_PLATFORM_I386_PC n
CONFIG_PLATFORM_ARM_RPI n
CONFIG_PLATFORM_ARM64_RPI y
CONFIG_PLATFORM_ANDROID_X86 n
CONFIG_PLATFORM_ANDROID_INTEL_X86 n
CONFIG_PLATFORM_JB_X86 n
CONFIG_PLATFORM_ARM_S3C2K4 n7. 安装DKMS包7.1 下载sudo apt-get update
sudo apt-get install dkms7AA7.2 配置安装sudo ./dkms-install.sh安装成功如下;第三安装硬件WIFI模块重启Jetson Nano第四在Ubuntu里面配置WIFI连接可能遇到的问题1 DKMS安装无法解析域名 ports.ubuntu解决办法就是换成国内的下载源先把linux header这些先下载了1.1 先备份源列表sudo cp /etc/apt/sources.list /etc/apt/sources.list_backup1.2 更新到清华源sudo gedit /etc/apt/sources.list# 默认注释了源码镜像以提高 apt update 速度如有需要可自行取消注释deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiverse# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiverse# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-updates main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiverse# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-backports main restricted universe multiversedeb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/deb https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/# deb-src https://mirrors.tuna.tsinghua.edu.cn/ubuntu/ xenial-security main restricted universe multiverse这样会装linux header的相关文件1.3 注意重启网络连接然后用一个更新的强制的命令选项 【这个在报错的提示里面有】1.4 重新安装dkms然后重新执行注意这里增加了额外的命令选项sudo apt-get install dkms --fix-missing如果还有问题参考以下额外步骤这部分因为笔者已经没有问题所以没有执行### Additional steps after plug it in, and was not recognized as a WiFi adapter:The USB ID is required to be known in order to change it later:bash
lsusb
In this case my adapter showed up as:bash
Bus 001 Device 005: ID 0bda:1a2b Realtek Semiconductor Corp.
Later, an utility has to be installed to change the USB behavior:bash
sudo apt-get install usb_modeswitch
Then, to change the USB behavior the following command has to be executed, note that the vendor and product ID (-v and -p flags parameters have to match with your device):bash
sudo usb_modeswitch -KW -v 0bda -p 1a2b
Additionally, the bluetooth service has to be activated if inactive (not really sure why **brektrou** mentions it, but I suspect that is due to some adapters that are a combination of both and may have some relation at deeper level):bash
systemctl start bluetooth.service
By now, it should work, but this configuration is not permanent.### Make permanent available the configuration for the WiFi adapter- The usb_modeswitch rules need to be open for modification:bashsudo nano /lib/udev/rules.d/40-usb_modeswitch.rules- Append the following prior to LABELmodeswitch_rules_end line, which is located at the end-of-file. Again, make sure to match the vendor and product ID with your device as previous commands# Realtek 8211CU Wifi AC USBATTR{idVendor}0bda, ATTR{idProduct}1a2b, RUN/usr/sbin/usb_modeswitch -K -v 0bda -p 1a2bNow, configuration is **permanent** on your system.At this point it should be possible to connect to an WiFi AP by using GUI or CLI.If you would like to do a headless setup, then follow the instructions at https://www.linuxbabe.com/command-line/ubuntu-server-16-04-wifi-wpa-supplicant. While paying attention to stop NetworkManager process, otherwise it wont let you scan and add your WiFi AP.bash
sudo systemctl stop NetworkManager
## Sources- https://github.com/brektrou/rtl8821CU- https://www.linuxbabe.com/command-line/ubuntu-server-16-04-wifi-wpa-supplicant参考Linux 模块管理方法之 DKMS - 知乎 (zhihu.com)(1条消息) Linux换国内镜像源(Ubuntu、Debian等)_linux换源_Raywit的博客-CSDN博客
