Ubuntu's Sources. list Auto generator (http://www.ubuntu-nl.org/source-o-matic/) is easy to use, with three pages in total. The first page requires you to enter your country. By default, it is generally selected for you. Select your Ubuntu version number and enter the CPU type. The second page is to select the software library, split two default ones, and there are 10 software libraries for you to choose, depending on your preferences. The third page is the result. Change the original
Ubuntu's Sources. list Auto generator (http://www.ubuntu-nl.org/source-o-matic/) is easy to use, with three pages in total.
The first page requires you to enter your country. By default, it is generally selected for you. Select your Ubuntu version number and enter the CPU type.
The second page is to select the software library, split two default ones, and there are 10 software libraries for you to choose, depending on your preferences.
The third page is the result.
Back up the original sources. list, paste the result on the third page above, and then execute
Sudo apt-get update
Sudo apt-get update
Everything is OK.
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