I love to know whether my internet access is being used or not on desktop so I always use speed indicator on my top panel. Usually I use NetSpeed by hedayaty but when reviewing GNOME 3.34, it failed to work, so I tested Simple net speed by bijignome and it worked. It shows both upload and download speed just like NetSpeed. I'm using it now and it's nice. If you don't know how to install it, simply follow this guide. Happy working!
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