Ubuntu used a patch for this, but it's just a work-around for now and multiple upstream's developers told me that is not the right approach to use. -- debbug#555134 ...
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ID Status▲ Resolution Sev Product Comp Assignee▲ Reporter Summary
47168 NEW --- nor Альт Раб Ошибки р sem sysoevas В настройках "Параметры монитора" есть возможность выбрать 120 Гц

File a new bug in the "Ошибки работы" component of the "Альт Рабочая станция" product