结果sudo do-release-upgrade：
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [819 B]
Get:2 Upgrade tool [1.338 kB]
Fetched 1.339 kB in 0s (0 B/s)
authenticate 'groovy.tar.gz' against 'groovy.tar.gz.gpg'
extracting 'groovy.tar.gz'
Reading cache
Checking package manager
Reading package lists... Done
Building dependency tree
Reading state information... Done
Hit http://dk.archive.ubuntu.com/ubuntu focal InRelease
Hit http://dk.archive.ubuntu.com/ubuntu focal-updates InRelease
Hit http://security.ubuntu.com/ubuntu focal-security InRelease
Hit http://archive.ubuntu.com/ubuntu focal InRelease
Hit http://ppa.launchpad.net/system76/pop/ubuntu focal InRelease
Hit http://dk.archive.ubuntu.com/ubuntu focal-backports InRelease
Fetched 0 B in 0s (0 B/s)
Reading package lists... Done
Building dependency tree
Reading state information... Done
Checking for installed snaps
Calculating snap size requirements
Updating repository information
Traceback (most recent call last): File
"/tmp/ubuntu-release-upgrader-1p89v3_w/groovy", line 8, in <module>
sys.exit(main()) File "/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeMain.py",
line 238, in main
if app.run(): 文件“/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py”，第 2089 行，在运行中返回 self.fullUpgrade() 文件“/tmp/ubuntu-release-upgrader-1p89v3_w /DistUpgrade/DistUpgradeController.py”，第 1932 行，在 fullUpgrade 如果不是 self.updateSourcesList()：文件“/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py”，第 801 行，在 updateSourcesList self.sources = SourcesList(matcherPath=self.datadir) 文件“/usr/lib/python3/dist-packages/aptsources/sourceslist.py”，第 273 行，位于在里面 self.matcher = SourceEntryMatcher(matcherPath) 文件“/usr/lib/python3/dist-packages/aptsources/sourceslist.py”，第 470 行，位于在里面 dist = DistInfo(base_dir=matcherPath) 文件“/usr/lib/python3/dist-packages/aptsources/distinfo.py”，第 184 行，位于 在里面 with open(dist_fname) as dist_file: FileNotFoundError: [Errno 2] 没有这样的文件或目录: '/tmp/ubuntu-release-upgrader-1p89v3_w/Pop.info' sys.excepthook 中的错误：回溯（最近一次调用）：文件“/usr/lib/python3/dist-packages/problem_report.py”，第 477 行，在 add_to_existing self.write(f) 文件“/usr/lib/python3/dist-packages/problem_report.py”，第 430 行，在写入块= f.read（1048576）文件“/usr/lib/python3.8/codecs.py”，第322行，在解码（结果，消耗）= self._buffer_decode（数据，self.errors，最终）UnicodeDecodeError ：“utf-8”编解码器无法解码位置 1 中的字节 0x8b：起始字节无效
原始异常是：回溯（最近一次调用最后一次）：文件“/tmp/ubuntu-release-upgrader-1p89v3_w/groovy”，第 8 行，在 sys.exit(main()) 文件“/tmp/ubuntu-release-upgrader” -1p89v3_w/DistUpgrade/DistUpgradeMain.py”，第 238 行，在 main if app.run() 中：文件“/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py”，第 2089 行，在运行中返回 self。 fullUpgrade（）文件“/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py”，第1932行，在fullUpgrade中，如果不是self.updateSourcesList（）：文件“/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade /DistUpgradeController.py”，第 801 行，在 updateSourcesList self.sources = SourcesList(matcherPath=self.datadir) 文件“/usr/lib/python3/dist-packages/aptsources/sourceslist.py”，第 273 行，在在里面 self.matcher = SourceEntryMatcher(matcherPath) 文件“/usr/lib/python3/dist-packages/aptsources/sourceslist.py”，第 470 行，位于在里面 dist = DistInfo(base_dir=matcherPath) 文件“/usr/lib/python3/dist-packages/aptsources/distinfo.py”，第 184 行，位于 在里面
with open(dist_fname) as dist_file: FileNotFoundError: [Errno 2] No such file or directory:
> '/tmp/ubuntu-release-upgrader-1p89v3_w/Pop.info'
编辑：
sudo apt install ppa-purge
Reading package lists... Done
Building dependency tree
Reading state information... Done
Suggested packages:
aptitude
The following NEW packages will be installed:
ppa-purge
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
Need to get 6.312 B of archives.
After this operation, 24,6 kB of additional disk space will be used.
Get:1 http://dk.archive.ubuntu.com/ubuntu focal/universe amd64 ppa-purge all 0.2.8+bzr63 [6.312 B]
Fetched 6.312 B in 0s (14,3 kB/s)
Selecting previously unselected package ppa-purge.
(Reading database ... 327513 files and directories currently installed.)
Preparing to unpack .../ppa-purge_0.2.8+bzr63_all.deb ...
Unpacking ppa-purge (0.2.8+bzr63) ...
Setting up ppa-purge (0.2.8+bzr63) ...
Processing triggers for man-db (2.9.1-1) ...
x@x:~$ sudo ppa-purge ppa:system76/pop
Updating packages lists
PPA to be removed: system76 pop
Warning: Could not find package list for PPA: system76 pop
答案1
我在尝试升级到 Pop 时遇到了同样的“缺少 Pop.info”错误！操作系统 20.10。我能够通过以下过程解决这个问题：
# Begin upgrade
sudo do-release-upgrade
# Pause the process with Ctrl-Z
^Z
# Create an empty Pop.info file in the newest /tmp/ubuntu-release-upgrader-* directory
sudo touch /tmp/ubuntu-release-upgrade-*/Pop.info
# Resume the upgrade process
fg
答案2
除了@cwc的回答之外，
# Begin upgrade
sudo do-release-upgrade
# Pause the process with Ctrl-Z
^Z
# Find the tmp folder that newly created. And store LAST_CREATED_FOLDER variable.
LAST_CREATED_FOLDER=$(sudo ls -t /tmp/ | grep ubuntu-release-upgrader | head -1)
# Create an empty Pop.info file in the newest /tmp/ubuntu-release-upgrader-* directory
sudo touch /tmp/$LAST_CREATED_FOLDER/Pop.info
# Resume the upgrade process
fg