I installed manjaro XFCE with open source. though I have Nvidia graphics card. So should I re install with Propitiatory drivers? please help me. and my ethernet connection is not working. so what can I do?
You can use mhwd/manjaro settings gui to install nvidia drivers no need to reinstall
Definitely use proprietary drivers for NVIDIA. Always.
You should make a separate post for your ethernet issue.
There is no need to reinstall your whole system to install a different driver. You can use MHWD, which is built into your installation. There is a GUI. But without internet access, you wouldn’t be able to download the driver.
Also… you didn’t need to make this post about it when you already have the other post you could have just commented in: