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Lubuntu will stop providing 32-bit versions starting from 19.04
Lubuntu - Wikipedia
lubuntu – lightweight, fast, easier
Amazon.com: Lubuntu Linux 18.04 DVD - FAST Desktop Live DVD - Official 32- bit Release
Network socket icon not showing up in tray (lubuntu 18.04) - Ask Ubuntu
Is Lubuntu 18.04 LTS supported until 2021 or 2023? : r/Lubuntu