无法更新到20.10

Question

sudo do-release-upgrade的结果：

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

如果"/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py"，()：app.run第2089行，在运行返回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init "/usr/lib/python3/dist-packages/aptsources/sourceslist.py"，= SourcesList(matcherPath=self.datadir)文件"/usr/lib/python3/dist-packages/aptsources/distinfo.py"，第273行中，在init self.matcher = SourceEntryMatcher(matcherPath)文件"/usr/lib/python3/dist-packages/aptsources/sourceslist.py"，第470行中，在init dist = DistInfo(base_dir=matcherPath)“/usr/lib/python3/dist-packages/aptsources/distinfo.py”，第184行中，在init with "/usr/lib/python3/dist-packages/problem_report.py"，(Dist_fname) as dist_file: FileNotFoundError：Errno 2 No这类文件或目录中: sys.excepthook: Traceback (最近一次调用)中的文件错误:文件dist_fname第477行，add_to_existing self.write(f)文件"/usr/lib/python3/dist-packages/problem_report.py"，第430行，在写块= f.read(1048576) File "/usr/lib/python3.8/codecs.py“中，第322行，在解码(结果，消费)=self._buffer_decode(数据，self.errors，最终) UnicodeDecodeError：'utf- 8‘编解码器不能解码位置1的字节0x8b :无效的起始字节原始异常是:回溯(最近一次调用)：文件第8行，在"/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeMain.py"，( main ())sys.exit第238行中，在main if app.run()：File app.run第2089行中，在run #en2# self.fullUpgrade() File "/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py"，第1932行中，在“如果不是"/tmp/ubuntu-release-upgrader-1p89v3_w/DistUpgrade/DistUpgradeController.py"，()：File "/usr/lib/python3/dist-packages/aptsources/sourceslist.py"，801”中，在updateSourcesList self.sources = SourcesList(matcherPath=self.datadir) File "/usr/lib/python3/dist-packages/aptsources/sourceslist.py"，第273行中，在init self.matcher = SourceEntryMatcher(matcherPath)文件“/usr/lib/python3/dist-packages/aptsources/sourceslist.py”，第470行中，在init = DistInfo(base_dir=matcherPath)文件第184行中，在init

    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

Answer 1

在试图升级到Pop时，我遇到了同样的“丢失Pop.info”错误！OS 20.10。我能够通过以下程序来解决这个问题：

# 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