Configure proxy settings like follows on Debian / Ubuntu Client.
Brightness controls not working on Gigabyte display
It sounds like you don't have the GD extension installed. I don't use Ubuntu any longer, but I think it may be named php5-gd,...
How to Install Firmware in Debian Buster to Enable Wireless This package contains the binary firmware for Intel Wireless cards supported by the iwl3945, iwl4965, and...
Command line interface for testing internet bandwidth using speedtest.net How to check Internet Speed via Terminal?