Eu resolvi isso :) finalmente
etapas:
sudo apt-get update && sudo apt-get install laptop-mode-tools
que causou um popup de atualização automática do ubuntu depois de ter pressionado o botão ok foi algo instalado, estou postando o arquivo de log a partir deste momento (claro que a maioria dessas atualizações não estão relacionadas a este problema, mas de qualquer maneira)
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