我一直在嘗試從 Ubuntu 15.10 升級到 16.04，但沒有成功，無法完成。當升級失敗時，從終端機執行更新管理器會給予以下資訊。透過搜尋發現這與 python 問題有關。由於我對 linux/ubuntu 的了解有限，我請求幫助/指導如何解決問題，以便我可以成功升級，即我可以檢查日誌等或發出命令以獲取線索來查明我遇到的問題。
升級失敗時的提示訊息：
Checking for a new Ubuntu release
Your Ubuntu release is not supported anymore.
For upgrade information, please visit:
http://www.ubuntu.com/releaseendoflife
Gtk-Message: GtkDialog mapped without a transient parent. This is discouraged.
authenticate 'xenial.tar.gz' against 'xenial.tar.gz.gpg'
extracting 'xenial.tar.gz'
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-46o837s0/xenial", line 8, in <module>
sys.exit(main())
File "/tmp/ubuntu-release-upgrader-46o837s0/DistUpgrade/DistUpgradeMain.py", line 239, in main
save_system_state(logdir)
File "/tmp/ubuntu-release-upgrader-46o837s0/DistUpgrade/DistUpgradeMain.py", line 131, in save_system_state
scrub_sources=True)
File "/tmp/ubuntu-release-upgrader-46o837s0/DistUpgrade/apt_clone.py", line 149, in save_state
self._write_state_installed_pkgs(sourcedir, tar)
File "/tmp/ubuntu-release-upgrader-46o837s0/DistUpgrade/apt_clone.py", line 203, in _write_state_installed_pkgs
import lsb_release
ImportError: No module named 'lsb_release'
Error in sys.excepthook:
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/problem_report.py", line 480, in add_to_existing
self.write(f)
File "/usr/lib/python3/dist-packages/problem_report.py", line 433, in write
block = f.read(1048576)
File "/usr/lib/python3.4/codecs.py", line 319, in decode
(result, consumed) = self._buffer_decode(data, self.errors, final)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x8b in position 1: invalid start byte
Original exception was:
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-46o837s0/xenial", line 8, in <module>
sys.exit(main())
File "/tmp/ubuntu-release-upgrader-46o837s0/DistUpgrade/DistUpgradeMain.py", line 239, in main
save_system_state(logdir)
File "/tmp/ubuntu-release-upgrader-46o837s0/DistUpgrade/DistUpgradeMain.py", line 131, in save_system_state
scrub_sources=True)
記錄檔
2017-05-26 19:37:22,056 ERROR not handled exception:
Traceback (most recent call last):
File "/tmp/ubuntu-release-upgrader-4vs1duge/xenial", line 8, in <module>
sys.exit(main())
File "/tmp/ubuntu-release-upgrader-4vs1duge/DistUpgrade/DistUpgradeMain.py", line 239, in main
save_system_state(logdir)
File "/tmp/ubuntu-release-upgrader-4vs1duge/DistUpgrade/DistUpgradeMain.py", line 131, in save_system_state
scrub_sources=True)
File "/tmp/ubuntu-release-upgrader-4vs1duge/DistUpgrade/apt_clone.py", line 149, in save_state
self._write_state_installed_pkgs(sourcedir, tar)
File "/tmp/ubuntu-release-upgrader-4vs1duge/DistUpgrade/apt_clone.py", line 203, in _write_state_installed_pkgs
import lsb_release
ImportError: No module named 'lsb_release'
2017-05-26 19:37:22,057 DEBUG running apport_crash()
2017-05-26 19:37:22,263 DEBUG enabling apt cron job
跑步lsb_release -a
LSB Version: core-2.0-amd64:core-2.0-noarch:core-3.0-amd64:core-3.0-noarch:core-3.1-amd64:core-3.1-noarch:core-3.2-amd64:core-3.2-noarch:core-4.0-amd64:core-4.0-noarch:core-4.1-amd64:core-4.1-noarch:cxx-3.0-amd64:cxx-3.0-noarch:cxx-3.1-amd64:cxx-3.1-noarch:cxx-3.2-amd64:cxx-3.2-noarch:cxx-4.0-amd64:cxx-4.0-noarch:cxx-4.1-amd64:cxx-4.1-noarch:desktop-3.1-amd64:desktop-3.1-noarch:desktop-3.2-amd64:desktop-3.2-noarch:desktop-4.0-amd64:desktop-4.0-noarch:desktop-4.1-amd64:desktop-4.1-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.0-amd64:graphics-3.0-noarch:graphics-3.1-amd64:graphics-3.1-noarch:graphics-3.2-amd64:graphics-3.2-noarch:graphics-4.0-amd64:graphics-4.0-noarch:graphics-4.1-amd64:graphics-4.1-noarch:languages-3.2-amd64:languages-3.2-noarch:languages-4.0-amd64:languages-4.0-noarch:languages-4.1-amd64:languages-4.1-noarch:multimedia-3.2-amd64:multimedia-3.2-noarch:multimedia-4.0-amd64:multimedia-4.0-noarch:multimedia-4.1-amd64:multimedia-4.1-noarch:printing-3.2-amd64:printing-3.2-noarch:printing-4.0-amd64:printing-4.0-noarch:printing-4.1-amd64:printing-4.1-noarch:qt4-3.1-amd64:qt4-3.1-noarch:security-4.0-amd64:security-4.0-noarch:security-4.1-amd64:security-4.1-noarch
Distributor ID: Ubuntu
Description: Ubuntu 15.10
Release: 15.10
Codename: wily
答案1
發現問題是由於lsb_release安裝的版本造成的。
從終端運行
python /usr/bin/lsb_release
或者
python2.7 /usr/bin/lsb_release
都很好
儘管
python3 /usr/bin/lsb_release
或者
python3.4 /usr/bin/lsb_release
給了
ImportError: No module named 'lsb_release'
我使用 Synaptic Package Manager 降級lsb_release回4.1+Debian11ubuntu8版本來解決該問題。