Archlinux安装Realtek

​ 在公司台式机上装了Arch Linux，自己的笔记本用Windows，用Synergy共享键鼠，由于网口有限，台式机接有线，笔记本连wifi，不在一个网段内，公司网络不稳定，Synergy时不时会断开连接，于是就想把手里的Realtek-8812AU（后面简称无线网卡）用在台式机上，这样台式机和笔记本都连wifi，出问题的概率应该会小一点。

​ 于是开始找驱动，买无线网卡时附带了一个刻有驱动的光盘，我把驱动拷贝后光盘就丢掉了，里面有Linux驱动。123456789101112131415161718[kinboy@kinboyarchlinux Linux]$ ltotal 104K4.0K -rw-r--r-- 1 kinboy kinboy 183 Aug 1 2014 'Last Drivers Download.url' 0 -rw-r--r-- 1 kinboy kinboy 0 Feb 19 2014 RTL8812AU_linux_v4.2.4_9390.20131023 40K -rw-r--r-- 1 kinboy kinboy 37K Oct 23 2013 ReleaseNotes.pdf4.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 WiFi_Direct_User_Interface4.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 android_ref_codes_JB_4.14.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 android_ref_codes_JB_4.24.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 android_ref_codes_JB_4.34.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 android_reference_codes4.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 android_reference_codes_ICS_nl802114.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 document4.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 driver4.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 hardware_wps_pbc4.0K -rw-r--r-- 1 kinboy kinboy 3.1K Aug 21 2013 install.sh 12K -rw-r--r-- 1 kinboy kinboy 8.1K Oct 23 2013 readme.txt4.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 wireless_tools4.0K drwxr-xr-x 2 kinboy kinboy 4.0K Sep 12 2016 wpa_supplicant_hostapd

执行 install.sh 编译时出错123456789101112131415161718192021222324252627282930313233343536373839make ARCH=x86_64 CROSS_COMPILE= -C /lib/modules/4.18.12-arch1-1-ARCH/build M=/home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023 modulesmake[1]: Entering directory '/usr/lib/modules/4.18.12-arch1-1-ARCH/build' CC [M] /home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/core/rtw_cmd.oIn file included from /home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/osdep_service.h:41, from /home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/drv_types.h:32, from /home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/core/rtw_cmd.c:22:/home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/osdep_service_linux.h: In function '_init_timer':/home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/osdep_service_linux.h:253:8: error: '_timer' {aka 'struct timer_list'} has no member named 'data' ptimer->data = (unsigned long)cntx; ^~/home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/osdep_service_linux.h:254:2: error: implicit declaration of function 'init_timer'; did you mean '_init_timer'? [-Werror=implicit-function-declaration] init_timer(ptimer); ^~~~~~~~~~ _init_timerIn file included from /home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/drv_types.h:32, from /home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/core/rtw_cmd.c:22:/home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/osdep_service.h: In function 'thread_enter':/home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/osdep_service.h:342:2: error: implicit declaration of function 'allow_signal'; did you mean 'do_signal'? [-Werror=implicit-function-declaration] allow_signal(SIGTERM); ^~~~~~~~~~~~ do_signal/home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/osdep_service.h: In function 'flush_signals_thread':/home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/osdep_service.h:352:6: error: implicit declaration of function 'signal_pending'; did you mean 'timer_pending'? [-Werror=implicit-function-declaration] if (signal_pending (current)) ^~~~~~~~~~~~~~ timer_pending/home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/include/osdep_service.h:354:3: error: implicit declaration of function 'flush_signals'; did you mean 'do_signal'? [-Werror=implicit-function-declaration] flush_signals(current); ^~~~~~~~~~~~~ do_signalcc1: some warnings being treated as errorsmake[2]: *** [scripts/Makefile.build:318: /home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023/core/rtw_cmd.o] Error 1make[1]: *** [Makefile:1517: _module_/home/kinboy/Linux/driver/rtl8812AU_linux_v4.2.4_9390.20131023] Error 2make[1]: Leaving directory '/usr/lib/modules/4.18.12-arch1-1-ARCH/build'make: *** [Makefile:1161: modules] Error 2##################################################Compile make driver error: 2Please check error Mesg##################################################

google implicit declaration of function ‘allow_signal’ 找到了这篇文章，大概讲了错误的原因和解决办法

我在操作过程中没有得到同样的结果，后来又在GitHub中找到了匹配版本的驱动的源码，地址12345git clone https://github.com/abperiasamy/rtl8812AU_8821AU_linux.gitcd rtl8812AU_8821AU_linuxmakesudo make installsudo modprobe -a rtl8812au

插上USB无线网卡，灯亮！

更新：内核升级至 4.19 后，无线网卡驱动失效，之前的驱动源码在 4.19 内核下无法编译成功，找到可以成功编译的驱动源码。