libgnutls.so.30に関連する再配置エラー、最後の更新後のエラーコード（127）[終了]

最後の更新後、これが起こりました：

/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
Reading package lists... Done
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly

これは何ですか？どうすれば解決できますか？

取得した最新のコマンドと結果：

$ sudo apt-get update
Hit:1 http://archive.ubuntu.com/ubuntu bionic InRelease
Get:2 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Hit:3 http://ppa.launchpad.net/certbot/certbot/ubuntu bionic InRelease
Get:4 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Hit:5 http://ppa.launchpad.net/ondrej/apache2/ubuntu bionic InRelease
Get:6 http://ppa.launchpad.net/ondrej/php/ubuntu bionic InRelease [20.8 kB]
Get:7 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 kB]
Get:8 http://security.ubuntu.com/ubuntu bionic-security/main i386 Packages [368 kB]
Get:9 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 Packages [51.7 kB]
Get:10 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages [729 kB]
Get:11 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main i386 Packages [51.7 kB]
Get:12 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages [503 kB]
Get:13 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main Translation-en [24.3 kB]
Get:14 http://archive.ubuntu.com/ubuntu bionic-updates/main i386 Packages [581 kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/main Translation-en [170 kB]
Get:16 http://archive.ubuntu.com/ubuntu bionic-updates/main Translation-en [263 kB]
Get:17 http://security.ubuntu.com/ubuntu bionic-security/restricted amd64 Packages [6,712 B]
Get:18 http://security.ubuntu.com/ubuntu bionic-security/restricted Translation-en [2,872 B]
Get:19 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 Packages [604 kB]
Get:20 http://archive.ubuntu.com/ubuntu bionic-updates/universe i386 Packages [979 kB]
Get:21 http://security.ubuntu.com/ubuntu bionic-security/universe i386 Packages [590 kB]
Get:22 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 Packages [1,003 kB]
Get:23 http://security.ubuntu.com/ubuntu bionic-security/universe Translation-en [201 kB]
Get:24 http://archive.ubuntu.com/ubuntu bionic-updates/multiverse i386 Packages [6,788 B]
Get:25 http://archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 Packages [7,312 B]
Get:26 http://security.ubuntu.com/ubuntu bionic-security/multiverse amd64 Packages [4,688 B]
Get:27 http://security.ubuntu.com/ubuntu bionic-security/multiverse i386 Packages [4,152 B]
Fetched 6,424 kB in 4s (1,604 kB/s)
Reading package lists... Done

$ sudo apt-get upgrade
Reading package lists... Done
Building dependency tree
Reading state information... Done
Calculating upgrade... Done
The following packages have been kept back:
  linux-generic linux-headers-generic linux-image-generic
The following packages will be upgraded:
  landscape-common libidn2-0 libnss-systemd libpam-systemd libpython2.7 libpython2.7-dev libpython2.7-minimal libpython2.7-stdlib libpython3.6 libpython3.6-minimal
  libpython3.6-stdlib libsystemd0 libudev1 linux-libc-dev memcached python2.7 python2.7-dev python2.7-minimal python3.6 python3.6-minimal systemd systemd-sysv udev
23 upgraded, 0 newly installed, 0 to remove and 3 not upgraded.
Need to get 44.7 MB of archives.
After this operation, 1,024 B disk space will be freed.
Do you want to continue? [Y/n] y
Get:1 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libnss-systemd amd64 237-3ubuntu10.29 [105 kB]
Get:2 http://ppa.launchpad.net/ondrej/php/ubuntu bionic/main amd64 libidn2-0 amd64 2.2.0-1+ubuntu18.04.1+deb.sury.org+1 [66.4 kB]
Get:3 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libsystemd0 amd64 237-3ubuntu10.29 [204 kB]
Get:4 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpam-systemd amd64 237-3ubuntu10.29 [108 kB]
Get:5 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 systemd amd64 237-3ubuntu10.29 [2,902 kB]
Get:6 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 udev amd64 237-3ubuntu10.29 [1,101 kB]
Get:7 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libudev1 amd64 237-3ubuntu10.29 [53.8 kB]
Get:8 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 systemd-sysv amd64 237-3ubuntu10.29 [11.6 kB]
Get:9 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpython3.6 amd64 3.6.8-1~18.04.2 [1,414 kB]
Get:10 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 python3.6 amd64 3.6.8-1~18.04.2 [202 kB]
Get:11 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpython3.6-stdlib amd64 3.6.8-1~18.04.2 [1,710 kB]
Get:12 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 python3.6-minimal amd64 3.6.8-1~18.04.2 [1,609 kB]
Get:13 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpython3.6-minimal amd64 3.6.8-1~18.04.2 [532 kB]
Get:14 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 python2.7-dev amd64 2.7.15-4ubuntu4~18.04.1 [279 kB]
Get:15 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpython2.7-dev amd64 2.7.15-4ubuntu4~18.04.1 [28.3 MB]
Get:16 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpython2.7 amd64 2.7.15-4ubuntu4~18.04.1 [1,052 kB]
Get:17 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 python2.7 amd64 2.7.15-4ubuntu4~18.04.1 [239 kB]
Get:18 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpython2.7-stdlib amd64 2.7.15-4ubuntu4~18.04.1 [1,915 kB]
Get:19 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 python2.7-minimal amd64 2.7.15-4ubuntu4~18.04.1 [1,293 kB]
Get:20 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 libpython2.7-minimal amd64 2.7.15-4ubuntu4~18.04.1 [336 kB]
Get:21 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 landscape-common amd64 18.01-0ubuntu3.4 [85.4 kB]
Get:22 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 linux-libc-dev amd64 4.15.0-62.69 [1,124 kB]
Get:23 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 memcached amd64 1.5.6-0ubuntu1.2 [109 kB]
Fetched 44.7 MB in 11s (3,952 kB/s)
Preconfiguring packages ...
(Reading database ... 111983 files and directories currently installed.)
Preparing to unpack .../libnss-systemd_237-3ubuntu10.29_amd64.deb ...
Unpacking libnss-systemd:amd64 (237-3ubuntu10.29) over (237-3ubuntu10.28) ...
Preparing to unpack .../libsystemd0_237-3ubuntu10.29_amd64.deb ...
Unpacking libsystemd0:amd64 (237-3ubuntu10.29) over (237-3ubuntu10.28) ...
Setting up libsystemd0:amd64 (237-3ubuntu10.29) ...
(Reading database ... 111983 files and directories currently installed.)
Preparing to unpack .../libpam-systemd_237-3ubuntu10.29_amd64.deb ...
Unpacking libpam-systemd:amd64 (237-3ubuntu10.29) over (237-3ubuntu10.28) ...
Preparing to unpack .../systemd_237-3ubuntu10.29_amd64.deb ...
Unpacking systemd (237-3ubuntu10.29) over (237-3ubuntu10.28) ...
Preparing to unpack .../udev_237-3ubuntu10.29_amd64.deb ...
Unpacking udev (237-3ubuntu10.29) over (237-3ubuntu10.28) ...
Preparing to unpack .../libudev1_237-3ubuntu10.29_amd64.deb ...
Unpacking libudev1:amd64 (237-3ubuntu10.29) over (237-3ubuntu10.28) ...
Setting up libudev1:amd64 (237-3ubuntu10.29) ...
Setting up systemd (237-3ubuntu10.29) ...
(Reading database ... 111983 files and directories currently installed.)
Preparing to unpack .../00-systemd-sysv_237-3ubuntu10.29_amd64.deb ...
Unpacking systemd-sysv (237-3ubuntu10.29) over (237-3ubuntu10.28) ...
Preparing to unpack .../01-libpython3.6_3.6.8-1~18.04.2_amd64.deb ...
Unpacking libpython3.6:amd64 (3.6.8-1~18.04.2) over (3.6.8-1~18.04.1) ...
Preparing to unpack .../02-python3.6_3.6.8-1~18.04.2_amd64.deb ...
Unpacking python3.6 (3.6.8-1~18.04.2) over (3.6.8-1~18.04.1) ...
Preparing to unpack .../03-libpython3.6-stdlib_3.6.8-1~18.04.2_amd64.deb ...
Unpacking libpython3.6-stdlib:amd64 (3.6.8-1~18.04.2) over (3.6.8-1~18.04.1) ...
Preparing to unpack .../04-python3.6-minimal_3.6.8-1~18.04.2_amd64.deb ...
Unpacking python3.6-minimal (3.6.8-1~18.04.2) over (3.6.8-1~18.04.1) ...
Preparing to unpack .../05-libpython3.6-minimal_3.6.8-1~18.04.2_amd64.deb ...
Unpacking libpython3.6-minimal:amd64 (3.6.8-1~18.04.2) over (3.6.8-1~18.04.1) ...
Preparing to unpack .../06-python2.7-dev_2.7.15-4ubuntu4~18.04.1_amd64.deb ...
Unpacking python2.7-dev (2.7.15-4ubuntu4~18.04.1) over (2.7.15-4ubuntu4~18.04) ...
Preparing to unpack .../07-libpython2.7-dev_2.7.15-4ubuntu4~18.04.1_amd64.deb ...
Unpacking libpython2.7-dev:amd64 (2.7.15-4ubuntu4~18.04.1) over (2.7.15-4ubuntu4~18.04) ...
Preparing to unpack .../08-libpython2.7_2.7.15-4ubuntu4~18.04.1_amd64.deb ...
Unpacking libpython2.7:amd64 (2.7.15-4ubuntu4~18.04.1) over (2.7.15-4ubuntu4~18.04) ...
Preparing to unpack .../09-python2.7_2.7.15-4ubuntu4~18.04.1_amd64.deb ...
Unpacking python2.7 (2.7.15-4ubuntu4~18.04.1) over (2.7.15-4ubuntu4~18.04) ...
Preparing to unpack .../10-libpython2.7-stdlib_2.7.15-4ubuntu4~18.04.1_amd64.deb ...
Unpacking libpython2.7-stdlib:amd64 (2.7.15-4ubuntu4~18.04.1) over (2.7.15-4ubuntu4~18.04) ...
Preparing to unpack .../11-python2.7-minimal_2.7.15-4ubuntu4~18.04.1_amd64.deb ...
Unpacking python2.7-minimal (2.7.15-4ubuntu4~18.04.1) over (2.7.15-4ubuntu4~18.04) ...
Preparing to unpack .../12-libpython2.7-minimal_2.7.15-4ubuntu4~18.04.1_amd64.deb ...
Unpacking libpython2.7-minimal:amd64 (2.7.15-4ubuntu4~18.04.1) over (2.7.15-4ubuntu4~18.04) ...
Preparing to unpack .../13-libidn2-0_2.2.0-1+ubuntu18.04.1+deb.sury.org+1_amd64.deb ...
Unpacking libidn2-0:amd64 (2.2.0-1+ubuntu18.04.1+deb.sury.org+1) over (2.0.4-1.1build2) ...
Setting up libidn2-0:amd64 (2.2.0-1+ubuntu18.04.1+deb.sury.org+1) ...
(Reading database ... 112006 files and directories currently installed.)
Preparing to unpack .../landscape-common_18.01-0ubuntu3.4_amd64.deb ...
Unpacking landscape-common (18.01-0ubuntu3.4) over (18.01-0ubuntu3.3) ...
Preparing to unpack .../linux-libc-dev_4.15.0-62.69_amd64.deb ...
Unpacking linux-libc-dev:amd64 (4.15.0-62.69) over (4.15.0-60.67) ...
Preparing to unpack .../memcached_1.5.6-0ubuntu1.2_amd64.deb ...
Unpacking memcached (1.5.6-0ubuntu1.2) over (1.5.6-0ubuntu1.1) ...
Setting up libnss-systemd:amd64 (237-3ubuntu10.29) ...
Setting up landscape-common (18.01-0ubuntu3.4) ...
Setting up memcached (1.5.6-0ubuntu1.2) ...
Setting up systemd-sysv (237-3ubuntu10.29) ...
Setting up linux-libc-dev:amd64 (4.15.0-62.69) ...
Setting up libpython3.6-minimal:amd64 (3.6.8-1~18.04.2) ...
Setting up udev (237-3ubuntu10.29) ...
update-initramfs: deferring update (trigger activated)
Setting up libpython2.7-minimal:amd64 (2.7.15-4ubuntu4~18.04.1) ...
Setting up libpython2.7-stdlib:amd64 (2.7.15-4ubuntu4~18.04.1) ...
Setting up python2.7-minimal (2.7.15-4ubuntu4~18.04.1) ...
Setting up libpython3.6-stdlib:amd64 (3.6.8-1~18.04.2) ...
Setting up libpam-systemd:amd64 (237-3ubuntu10.29) ...
Setting up python3.6-minimal (3.6.8-1~18.04.2) ...
Setting up python2.7 (2.7.15-4ubuntu4~18.04.1) ...
Setting up libpython2.7:amd64 (2.7.15-4ubuntu4~18.04.1) ...
Setting up libpython2.7-dev:amd64 (2.7.15-4ubuntu4~18.04.1) ...
Setting up python2.7-dev (2.7.15-4ubuntu4~18.04.1) ...
Setting up libpython3.6:amd64 (3.6.8-1~18.04.2) ...
Setting up python3.6 (3.6.8-1~18.04.2) ...
Processing triggers for ureadahead (0.100.0-21) ...
Processing triggers for libc-bin (2.27-3ubuntu1) ...
Processing triggers for systemd (237-3ubuntu10.29) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
Processing triggers for dbus (1.12.2-1ubuntu1.1) ...
Processing triggers for mime-support (3.60ubuntu1) ...
Processing triggers for initramfs-tools (0.130ubuntu3.8) ...
update-initramfs: Generating /boot/initrd.img-4.15.0-60-generic

$ sudo apt-get install linux-generic linux-headers-generic linux-image-generic
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
  linux-headers-4.15.0-62 linux-headers-4.15.0-62-generic linux-image-4.15.0-62-generic linux-modules-4.15.0-62-generic linux-modules-extra-4.15.0-62-generic
Suggested packages:
  fdutils linux-doc-4.15.0 | linux-source-4.15.0 linux-tools
Recommended packages:
  thermald
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly

$ sudo apt-get update
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
/usr/lib/apt/methods/http: relocation error: /usr/lib/x86_64-linux-gnu/libgnutls.so.30: symbol _idn2_punycode_decode version IDN2_0.0.0 not defined in file libidn2.so.0 with link time reference
Reading package lists... Done
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Method http has died unexpectedly!
E: Sub-process http returned an error code (127)
E: Method /usr/lib/apt/methods/http did not start correctly
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic/InRelease
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic-updates/InRelease
E: Failed to fetch http://archive.ubuntu.com/ubuntu/dists/bionic-backports/InRelease
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease
E: Failed to fetch http://ppa.launchpad.net/certbot/certbot/ubuntu/dists/bionic/InRelease
E: Failed to fetch http://ppa.launchpad.net/ondrej/apache2/ubuntu/dists/bionic/InRelease
E: Failed to fetch http://ppa.launchpad.net/ondrej/php/ubuntu/dists/bionic/InRelease
E: Some index files failed to download. They have been ignored, or old ones used instead.

Launchpadのバグ1843507によると、少なくとも一時的にコメント＃4が機能しました。

$ wget http://mirrors.kernel.org/ubuntu/pool/main/libi/libidn2/libidn2-0_2.0.4-1.1build2_amd64.deb
$ sudo dpkg -i libidn2-0_2.0.4-1.1build2_amd64.deb
$ sudo apt-mark hold libidn2-0

更新：バグレポートから、これはlaunchpad.net/~ondrejからPHPを使用している人にのみ影響を与えるようです。

更新：Ondřejは、PHPビルドの更新を既にリリースしています。libidn2-0をダウングレードして、aptが再び機能するようにすることができます。

$ wget http://mirrors.kernel.org/ubuntu/pool/main/libi/libidn2/libidn2-0_2.0.4-1.1build2_amd64.deb
$ sudo dpkg -i libidn2-0_2.0.4-1.1build2_amd64.deb

次に：

$ sudo apt update
$ sudo apt upgrade

そして、あなたは行ってもいいはずです。

このlibidn2-0_2.0.5-1_amd64.debパッケージをDebianリポジトリからマシンにダウンロードし、実行して、障害のあるUbuntuパッケージの代わりにインストールします。sudo dpkg -i /path/to/.deb

私のマシンでも同じ問題が発生しました。イーサネットケーブル経由でインターネットに接続し、@ Mason Pawseyが回答で言及したパッケージをプルダウンすることができました。

私はそれを行う方法に慣れていなかったので、@ chili555によるこの投稿からいくつかの助けを見つけました。

パッケージをダウングレードし、通常のように起動することができました。ただし、の/etc/network/interfacesファイルにはまだのエントリがあり、eth0これによりwifi経由で接続できなくなります。だから私はファイルに入って、下にあるすべてをコメントアウトしましたauto eth0（後で必要になった場合に備えて）。

エントリを削除し、コンピュータを再起動した後、すべてがうまくいきました。

これが将来このページを訪れる人の助けになることを願っています。