Can not use proxy to download packages on Ubuntu 20.04

Hi all,
I am a new user using RStudio on Linux.
I am also using RStudio on Windows for a long time and always using outbound proxy due to bad network connection in my university.
Now I found that RStudio on Linux could not use outbound proxy to download packages both in install.packages() and BiocManager::install() functions.

My settings are following this topic:
https://support.rstudio.com/hc/en-us/articles/200488488-Configuring-R-to-Use-an-HTTP-Proxy
And yes, it works when I tried downloading packages on terminal but it was not working when I using RStudio which is quite slow and no traffic from my proxy.
Is there any other solutions or anything else I should set up for a Linux settings?

At last, thanks for forgiving my poor English!

This topic was automatically closed 21 days after the last reply. New replies are no longer allowed.

If you have a query related to it or one of the replies, start a new topic and refer back with a link.