I should consider possible misinterpretations. Maybe the user is referring to an old or unofficial version? Let me check Ubuntu's official naming conventions. The standard name is like Ubuntu 22.04.1 LTS (Jammy Jellyfish) for the 22.04 release. The numbering is year and release number, then architecture. The "2x64" could be a mix-up; x64 is common for 64-bit systems. So maybe "2x64" is a typo for x86_64 or amd64.