At the beginning of this year, Debian was installed with a fixed IP address. When I went online in July, I found that I could not find a network connection tool. Later I switched to xubuntu and spent one day installing the development environment yesterday. I modified the network configuration file of the system, set a fixed IP address, and then restarted. I found that the problem on Debian appeared again, but I have already entered the account password for the ADSL connection, however, the dsl1 connection cannot be found in the panel indicator. After I delete the fixed IP address segment in the NIC configuration, I restarted and solved the problem... dsl1.
In the trough, the desktop version cannot have a fixed IP address or a fixed IP address, so modem information cannot be accessed. What are you doing?
# Xubuntu # slot, the problem was finally found out (the last blog this summer)