我的 Kubuntu 版本是 19.10 笔记本电脑是 LENOVO G580。TP-Link AC600 Archer T2U Nano 驱动程序能够捕获 2.4Ghz wifi，但无法捕获 5Ghz wifi
我按照这里的步骤操作，但没有成功。
这是第一个解决方案：
sudo apt install git dkms
git clone https://github.com/jeremyb31/rtl8812au-1.git
cd rtl8812au-1
sudo ./dkms-install.sh
并给出以下错误：
About to run dkms install steps...
Error! DKMS tree already contains: rtl8812au-5.3.4
You cannot add the same module/version combo more than once.
Kernel preparation unnecessary for this kernel. Skipping...
Building module:
cleaning build area...
'make' -j8 KVER=5.3.0-26-generic KSRC=/lib/modules/5.3.0-26-
generic/build......(bad exit status: 2)
ERROR (dkms apport): binary package for rtl8812au: 5.3.4 not found
Error! Bad return status for module build on kernel: 5.3.0-26-generic (x86_64)
Consult /var/lib/dkms/rtl8812au/5.3.4/build/make.log for more information.
Kernel preparation unnecessary for this kernel. Skipping...
Building module:
cleaning build area...
'make' -j8 KVER=5.3.0-26-generic KSRC=/lib/modules/5.3.0-26-
generic/build......(bad exit status: 2)
ERROR (dkms apport): binary package for rtl8812au: 5.3.4 not found
Error! Bad return status for module build on kernel: 5.3.0-26-generic (x86_64)
Consult /var/lib/dkms/rtl8812au/5.3.4/build/make.log for more information.
Finished running dkms install steps.
然后我转向了第二种解决方案：
sudo apt install git dkms
git clone https://github.com/aircrack-ng/rtl8812au.git
cd rtl8812au
sudo ./dkms-install.sh
没有出现任何错误，但仍然无法捕获 5Ghz wifi
以下是 sudo dkms status 的输出：
bcmwl, 6.30.223.271+bdcom, 5.3.0-7625-generic, x86_64: installed
nvidia, 440.44, 5.3.0-7625-generic, x86_64: installed
rtl8812au, 5.3.4: added
rtl8812au, 5.6.4.2, 5.3.0-7625-generic, x86_64: installed
system76, 1.0.6~1568425791~19.10~5ba8ce9, 5.3.0-7625-generic, x86_64: installed
system76_acpi, 1.0.1~1571170639~19.10~d625910, 5.3.0-7625-generic, x86_64: installed
system76-io, 1.0.1~1559663713~19.10~ea5f61a, 5.3.0-7625-generic, x86_64: installed
请提供建议，我为此已经挣扎很久了！