我尝试将 Ubuntu 16.04 更新到 18.04，但当我从 GUI 尝试时，它告诉我需要权限，然后不久之后，它提示我更新，但当我按更新时，它消失了，什么也没发生。我尝试通过终端更新，但它给了我这个
sudo do-release-upgrade
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [819 B]
Get:2 Upgrade tool [1,251 kB]
Fetched 1,252 kB in 0s (0 B/s)
authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg'
extracting 'bionic.tar.gz'
Reading cache
Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Hit http://repository.spotify.com stable InRelease
Hit http://archive.ubuntu.com/ubuntu xenial InRelease
Get:1 http://archive.ubuntu.com/ubuntu xenial-updates InRelease [99.8 kB]
Hit https://dl.winehq.org/wine-builds/ubuntu xenial InRelease
Hit https://brave-browser-apt-release.s3.brave.com stable InRelease
Hit https://repo.steampowered.com/steam stable InRelease
Get:2 https://dl.winehq.org/wine-builds/ubuntu bionic InRelease [6,263 B]
Get:3 https://dl.winehq.org/wine-builds/ubuntu jammy InRelease [8,041 B]
Get:4 http://archive.ubuntu.com/ubuntu xenial-security InRelease [99.8 kB]
Get:5 https://esm.ubuntu.com/infra/ubuntu xenial-infra-security InRelease [7,518 B]
Ign https://dl.winehq.org/wine-builds/ubuntu bionic InRelease
Get:6 https://esm.ubuntu.com/infra/ubuntu xenial-infra-updates InRelease [7,475 B]
Ign https://dl.winehq.org/wine-builds/ubuntu jammy InRelease
Get:7 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 DEP-11 Metadata [326 kB]
Get:8 http://archive.ubuntu.com/ubuntu xenial-updates/universe amd64 DEP-11 Metadata [281 kB]
Get:9 http://archive.ubuntu.com/ubuntu xenial-updates/multiverse amd64 DEP-11 Metadata [5,960 B]
Get:10 http://archive.ubuntu.com/ubuntu xenial-security/main amd64 DEP-11 Metadata [93.8 kB]
Get:11 http://archive.ubuntu.com/ubuntu xenial-security/universe amd64 DEP-11 Metadata [130 kB]
Get:12 http://archive.ubuntu.com/ubuntu xenial-security/multiverse amd64 DEP-11 Metadata [2,464 B]
Fetched 1,068 kB in 0s (0 B/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
Restoring original system state
Aborting
Reading package lists... Done
Building dependency tree
Reading state information... Done
值得一提的是，我使用的笔记本电脑是处于开发者模式的 Chromebook，使用 crouton 运行 ubuntu。
该笔记本电脑的功能足够强大，可以进行更新。
现在运行的 ubuntu 版本是 Ubuntu 16.04.7 LTS 64 位，据我所知，它运行的是某种形式的 gnome。我对 Linux 还很陌生，所以我不确定。