Ubuntu問題解決匯總
1.Ubuntu支持安裝多媒體播放插件（新系統安裝後必備）
ubuntu-restricted-extras package allows users to install ability to play popular non-free media formats, including DVD, MP3, Quicktime, and Windows Media formats.
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sudo apt-get install ubuntu-restricted-extras
2.VirtualBox is not currently allowed to access USB devices. You can change this by adding your user to the 'vboxusers' group. Please see the user manual for a more detailed explanation.
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sudo usermod -aG vboxusers username
username為你登錄系統的名稱，添加之後，需要重啟才能生效。
