[SOLVED] Random update manager errors: repository no longer has a Release file

[stoffl]

UPDATE:

The problem was caused by apt trying to connect to repos via IPv6. Why this suddenly happened is unclear because my settings and network didn't change. The solution was to disable IPv6 in the network connection.

---

Starting yesterday I see random errors in the update manager of this sort:

The repository 'http://mirror.ratiokontakt.de/mirror/ubuntu bionic Release' no longer has a Release file., W:Updating from such a repository can't be done securely, and is therefore disabled by default., W:See apt-secure(8) manpage for repository creation and user configuration details.

• It happens randomly for one ore more of sources I have in /etc/apt/sources.list.d/ (e.g. seen http://dl.google.com/linux/chrome/deb, https://deb.nodesource.com/node_10.x, https://download.docker.com/linux/ubuntu.

• Selecting another mirror server does not help

• When I click on "refresh", it sometimes gives me an error about yet another repository. If I retry several times there's no error anymore.

• "sudo apt update" always works without an error on the command line.

mint_update_failure.png

[gm10]

Are you on an unstable connection? I could imagine you're getting timeouts on some of them, or you've got a slow proxy that takes a while to populate the cache, that's why the issue eventually resolves itself. I should imagine apt update would produce errors as well if you were to run it first.

[stoffl]

No, my connection seems very stable: I have several IMs, (Skype, Slack, ...) and work remotely on a server via SSH. None of these has any signs of disconnection. I would really notice if the connection went down.

I just clicked refresh and got yet another warning, this time for 'http://archive.canonical.com/ubuntu bionic Release'. The connection was fine all the time.

When I closed the warning window, after some seconds the updater says "Your system is up to date" (translated from german).

It's really weird.

UPDATE: I ran ping for some time to monitor my connection. There are indeed about 1% packet loss. But IMO that's way to low to explain the updater issues. It would be extreme coincidence if the updater always finds the 1% time slot when the connection is not available.

Code: Select all

$ ping -i 2 -f 8.8.8.8
PING 8.8.8.8 (8.8.8.8) 56(84) bytes of data.
.................^C
--- 8.8.8.8 ping statistics ---
1432 packets transmitted, 1415 received, 1% packet loss, time 2865559ms
rtt min/avg/max/mdev = 15.358/18.251/160.657/5.012 ms, ipg/ewma 2002.487/20.185 ms

[stoffl]

This is driving me nuts. My connection is fine and yet again I just got this message from the updater:

Das Depot »http://mirror.ratiokontakt.de/mirror/ubuntu bionic Release« enthält keine Release-Datei mehr.Eine Aktualisierung von solch einem Depot kann nicht auf eine sichere Art durchgeführt werden, daher ist es standardmäßig deaktiviert.Weitere Details zur Erzeugung von Paketdepots sowie zu deren Benutzerkonfiguration finden Sie in der Handbuchseite apt-secure(8).Das Depot »http://mirror.ratiokontakt.de/mirror/ubuntu bionic-updates Release« enthält keine Release-Datei mehr.Eine Aktualisierung von solch einem Depot kann nicht auf eine sichere Art durchgeführt werden, daher ist es standardmäßig deaktiviert.Weitere Details zur Erzeugung von Paketdepots sowie zu deren Benutzerkonfiguration finden Sie in der Handbuchseite apt-secure(8).Das Depot »http://mirror.ratiokontakt.de/mirror/ubuntu bionic-backports Release« enthält keine Release-Datei mehr.Eine Aktualisierung von solch einem Depot kann nicht auf eine sichere Art durchgeführt werden, daher ist es standardmäßig deaktiviert.Weitere Details zur Erzeugung von Paketdepots sowie zu deren Benutzerkonfiguration finden Sie in der Handbuchseite apt-secure(8).Das Depot »http://archive.canonical.com/ubuntu bionic Release« enthält keine Release-Datei mehr.Eine Aktualisierung von solch einem Depot kann nicht auf eine sichere Art durchgeführt werden, daher ist es standardmäßig deaktiviert.Weitere Details zur Erzeugung von Paketdepots sowie zu deren Benutzerkonfiguration finden Sie in der Handbuchseite apt-secure(8).Das Depot »https://download.docker.com/linux/ubuntu bionic Release« enthält keine Release-Datei mehr.

[gm10]

UPDATE: I ran ping for some time to monitor my connection. There are indeed about 1% packet loss. But IMO that's way to low to explain the updater issues. It would be extreme coincidence if the updater always finds the 1% time slot when the connection is not available.

Dropping a tiny "ping" packet isn't quite the same thing as a full max transmit window sized data packet on a different protocol getting lost.

But the possible connection issues aside, just in case go Mint menu > Software Sources > Maintenance > Fix MergeList errors

The fact that you're saying your apt update doesn't produce any errors means this likely won't change a thing but it can't hurt, either.

[stoffl]

Dropping a tiny "ping" packet isn't quite the same thing as a full max transmit window sized data packet on a different protocol getting lost.

But the possible connection issues aside, just in case go Mint menu > Software Sources > Maintenance > Fix MergeList errors

Did as you suggested and after that was asked to do another update. Ended up with the same error

So what would you suggest to check my connection? Everything else works just fine: Youtube, Downloads, etc...

Can I manually download the repository files somehow? I'd then run a little script do constantly download these files to see if it works.

[gm10]

So what would you suggest to check my connection?

First let's establish what system you are actually on, please post output of

Code: Select all

inxi -Fxz

Then let's see what apt is doing, please run this:

Code: Select all

sudo apt-get update -o Debug::Acquire::http=true 2> ~/apt.log

and then you'll find a transaction log in the file

Code: Select all

~/apt.log

Either copy & paste the entire contents here, if they're not too long, or compress the file and upload as an attachment to your next post (or put the whole thing into a pastebin.com and link it here). If you can, verify that there are actually error messages in there first, I'm not sure how regular you are running into this issue.

[stoffl]

Code: Select all

$ inxi -Fxz
System:    Host: Nilar Kernel: 4.15.0-43-generic x86_64 bits: 64 compiler: gcc v: 7.3.0 Desktop: Cinnamon 4.0.9 
           Distro: Linux Mint 19.1 Tessa base: Ubuntu 18.04 bionic 
Machine:   Type: Desktop Mobo: ASRock model: B85M-ITX serial: <filter> UEFI [Legacy]: American Megatrends v: P2.50 
           date: 01/07/2016 
CPU:       Topology: Quad Core model: Intel Core i7-4790K bits: 64 type: MT MCP arch: Haswell rev: 3 L2 cache: 8192 KiB 
           flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 63984 
           Speed: 2500 MHz min/max: 800/4400 MHz Core speeds (MHz): 1: 2498 2: 2501 3: 2501 4: 2500 5: 2500 6: 2506 7: 2503 
           8: 2501 
Graphics:  Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor Integrated Graphics vendor: ASRock driver: i915 v: kernel 
           bus ID: 00:02.0 
           Display: x11 server: X.Org 1.19.6 driver: modesetting unloaded: fbdev,vesa resolution: 1920x1200~60Hz 
           OpenGL: renderer: Mesa DRI Intel Haswell Desktop v: 4.5 Mesa 18.0.5 direct render: Yes 
Audio:     Device-1: Intel Xeon E3-1200 v3/4th Gen Core Processor HD Audio vendor: ASRock driver: snd_hda_intel v: kernel 
           bus ID: 00:03.0 
           Device-2: Intel 8 Series/C220 Series High Definition Audio vendor: ASRock driver: snd_hda_intel v: kernel 
           bus ID: 00:1b.0 
           Device-3: Sennheiser type: USB driver: hid-generic,snd-usb-audio,usbhid bus ID: 3-10:9 
           Sound Server: ALSA v: k4.15.0-43-generic 
Network:   Device-1: Qualcomm Atheros QCA8171 Gigabit Ethernet vendor: ASRock driver: alx v: kernel port: e000 bus ID: 02:00.0 
           IF: enp2s0 state: up speed: 100 Mbps duplex: full mac: <filter> 
           IF-ID-1: br-1f1a0ba098d7 state: up speed: N/A duplex: N/A mac: <filter> 
           IF-ID-2: br-6ea378bc9a98 state: down mac: <filter> 
           IF-ID-3: br-8d27d8400b76 state: down mac: <filter> 
           IF-ID-4: docker0 state: down mac: <filter> 
           IF-ID-5: veth458a7f2 state: up speed: 10000 Mbps duplex: full mac: <filter> 
           IF-ID-6: veth962d74a state: up speed: 10000 Mbps duplex: full mac: <filter> 
           IF-ID-7: veth9fb0261 state: up speed: 10000 Mbps duplex: full mac: <filter> 
Drives:    Local Storage: total: 232.89 GiB used: 53.13 GiB (22.8%) 
           ID-1: /dev/sda vendor: Samsung model: SSD 840 Series size: 232.89 GiB 
Partition: ID-1: / size: 212.10 GiB used: 52.91 GiB (24.9%) fs: ext4 dev: /dev/dm-1 
           ID-2: /boot size: 703.5 MiB used: 220.7 MiB (31.4%) fs: ext4 dev: /dev/sda1 
           ID-3: swap-1 size: 15.66 GiB used: 0 KiB (0.0%) fs: swap dev: /dev/dm-2 
Sensors:   System Temperatures: cpu: 38.0 C mobo: N/A 
           Fan Speeds (RPM): N/A 
Info:      Processes: 344 Uptime: 7d 2h 13m Memory: 15.33 GiB used: 4.89 GiB (31.9%) Init: systemd runlevel: 5 Compilers: 
           gcc: 7.3.0 Shell: bash v: 4.4.19 inxi: 3.0.27

Code: Select all

GET /js-reynaud/kicad-5/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: ppa.launchpad.net
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Sat, 08 Dec 2018 02:06:25 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ppa.launchpad.net/js-reynaud/kicad-5/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 08:29:15 GMT
Server: Apache
Connection: close
ETag: "3c16-57c792dde0dbb"
Expires: Wed, 23 Jan 2019 08:29:15 GMT
Cache-Control: max-age=0, s-maxage=270, proxy-revalidate

GET /ubuntu/dists/bionic-security/InRelease HTTP/1.1
Host: security.ubuntu.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Wed, 23 Jan 2019 07:21:00 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /malteworld/ppa/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: ppa.launchpad.net
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Wed, 05 Sep 2018 10:38:13 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ppa.launchpad.net/malteworld/ppa/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 08:29:15 GMT
Server: Apache
Connection: close
ETag: "3bf6-5751d5f141aae"
Expires: Wed, 23 Jan 2019 08:29:15 GMT
Cache-Control: max-age=0, s-maxage=270, proxy-revalidate

Answer for: http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 08:29:15 GMT
Server: Apache/2.4.18 (Ubuntu)
ETag: "14525-5801aef8c2f00"
Expires: Wed, 23 Jan 2019 08:29:15 GMT
Cache-Control: max-age=0, s-maxage=3300, proxy-revalidate

GET /stefansundin/truecrypt/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: ppa.launchpad.net
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Thu, 20 Dec 2018 07:29:56 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ppa.launchpad.net/stefansundin/truecrypt/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache
Connection: close
ETag: "3c08-57d6f18e486de"
Expires: Wed, 23 Jan 2019 08:29:16 GMT
Cache-Control: max-age=0, s-maxage=270, proxy-revalidate

GET /mirror/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Thu, 26 Apr 2018 23:38:40 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /mint/packages/dists/tessa/InRelease HTTP/1.1
Host: ftp.fau.de
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
ETag: "3b180-56ac8e31ec000"

GET /mirror/ubuntu/dists/bionic-updates/InRelease HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 23:13:00 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ftp.fau.de/mint/packages/dists/tessa/InRelease
HTTP/1.1 404 Not Found
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache/2.4
Content-Length: 297
Content-Type: text/html; charset=iso-8859-1

GET /mint/packages/dists/tessa/Release HTTP/1.1
Host: ftp.fau.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Fri, 11 Jan 2019 16:07:52 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic-updates/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
ETag: "15a92-580141e52d700"

GET /mirror/ubuntu/dists/bionic-backports/InRelease HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 23:13:00 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ftp.fau.de/mint/packages/dists/tessa/Release
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache/2.4
ETag: "5e41-57f30e5b61f39"

GET /linux/chrome/deb/dists/stable/InRelease HTTP/1.1
Host: dl.google.com
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic-backports/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
ETag: "12342-580141e52d700"

GET /ubuntu/dists/bionic/InRelease HTTP/1.1
Host: archive.canonical.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 08 Jan 2019 16:59:54 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://dl.google.com/linux/chrome/deb/dists/stable/InRelease
HTTP/1.1 404 Not Found
Content-Length: 1449
Content-Type: text/html; charset=utf-8
Server: downloads
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block
Date: Wed, 23 Jan 2019 08:29:16 GMT

GET /linux/chrome/deb/dists/stable/Release HTTP/1.1
Host: dl.google.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 22:08:50 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://dl.google.com/linux/chrome/deb/dists/stable/Release
HTTP/1.1 304 Not Modified
Etag: "318540"
Server: downloads
Vary: *
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block
Date: Wed, 23 Jan 2019 08:29:16 GMT

Answer for: http://archive.canonical.com/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache/2.4.18 (Ubuntu)
ETag: "27d6-57ef5464b5e47"

GET /mirror/ubuntu/dists/bionic/main/i18n/by-hash/SHA256/8be406e66d1b69607105bf1257a14f7a58419247825cefabc32d17c65aefb72f HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic/main/i18n/by-hash/SHA256/8be406e66d1b69607105bf1257a14f7a58419247825cefabc32d17c65aefb72f
HTTP/1.1 200 OK
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
Last-Modified: Thu, 26 Apr 2018 23:38:40 GMT
ETag: "6ef4c-56ac8e31ec000"
Accept-Ranges: bytes
Content-Length: 454476

GET /mirror/ubuntu/dists/bionic/restricted/i18n/by-hash/SHA256/112dead8c3160fb5448be53eaffb4e4ab28422a33ba4f0fa2003e3008fff90c8 HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /mirror/ubuntu/dists/bionic/universe/i18n/by-hash/SHA256/de3de14552fc3e0f5d3601380114de186876c2894dc4a017149c08666867d2fc HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /mirror/ubuntu/dists/bionic/multiverse/i18n/by-hash/SHA256/efcfb17379087fdf16dea82d2769456550ddc422036760d09a98cc84cf43741a HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic/restricted/i18n/by-hash/SHA256/112dead8c3160fb5448be53eaffb4e4ab28422a33ba4f0fa2003e3008fff90c8
HTTP/1.1 200 OK
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
Last-Modified: Thu, 26 Apr 2018 23:38:40 GMT
ETag: "8dc-56ac8e31ec000"
Accept-Ranges: bytes
Content-Length: 2268

Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic/universe/i18n/by-hash/SHA256/de3de14552fc3e0f5d3601380114de186876c2894dc4a017149c08666867d2fc
HTTP/1.1 200 OK
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
Last-Modified: Thu, 26 Apr 2018 23:38:40 GMT
ETag: "22aba0-56ac8e31ec000"
Accept-Ranges: bytes
Content-Length: 2272160

Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic/multiverse/i18n/by-hash/SHA256/efcfb17379087fdf16dea82d2769456550ddc422036760d09a98cc84cf43741a
HTTP/1.1 200 OK
Date: Wed, 23 Jan 2019 08:29:16 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
Last-Modified: Thu, 26 Apr 2018 23:38:40 GMT
ETag: "149e8-56ac8e31ec000"
Accept-Ranges: bytes
Content-Length: 84456

E: Das Depot »https://deb.nodesource.com/node_10.x bionic Release« enthält keine Release-Datei mehr.
N: Eine Aktualisierung von solch einem Depot kann nicht auf eine sichere Art durchgeführt werden, daher ist es standardmäßig deaktiviert.
N: Weitere Details zur Erzeugung von Paketdepots sowie zu deren Benutzerkonfiguration finden Sie in der Handbuchseite apt-secure(8).

There seem to be some problems here. But the update manager complains about a lot more (e.g. just yet again about google, ratiokontakt, node, ...)

[gm10]

Code: Select all

E: Das Depot »https://deb.nodesource.com/node_10.x bionic Release« enthält keine Release-Datei mehr.
N: Eine Aktualisierung von solch einem Depot kann nicht auf eine sichere Art durchgeführt werden, daher ist es standardmäßig deaktiviert.
N: Weitere Details zur Erzeugung von Paketdepots sowie zu deren Benutzerkonfiguration finden Sie in der Handbuchseite apt-secure(8).

There seem to be some problems here. But the update manager complains about a lot more (e.g. just yet again about google, ratiokontakt, node, ...)

Actually the only error there is for a https connected repo, which I didn't have you debug (the screenshot in the OP only showed http errors). Let's try it again with this command please:

Code: Select all

sudo apt-get update -o Debug::Acquire::http=true -o Debug::Acquire::https=true 2> ~/apt.log

Also I forgot one parameter in the inxi command, I'd also really like to see your configured repositories:

Code: Select all

inxi -r

[stoffl]

Code: Select all

$ inxi -r
Repos:     No active apt repos in: /etc/apt/sources.list 
           Active apt repos in: /etc/apt/sources.list.d/additional-repositories.list 
           1: deb [arch=amd64] https://download.docker.com/linux/ubuntu bionic stable
           Active apt repos in: /etc/apt/sources.list.d/google-chrome.list 
           1: deb [arch=amd64] http://dl.google.com/linux/chrome/deb/ stable main
           Active apt repos in: /etc/apt/sources.list.d/js-reynaud-kicad-5-bionic.list 
           1: deb http://ppa.launchpad.net/js-reynaud/kicad-5/ubuntu bionic main
           Active apt repos in: /etc/apt/sources.list.d/malteworld-ppa-bionic.list 
           1: deb http://ppa.launchpad.net/malteworld/ppa/ubuntu bionic main
           2: deb-src http://ppa.launchpad.net/malteworld/ppa/ubuntu bionic main
           Active apt repos in: /etc/apt/sources.list.d/nodesource.list 
           1: deb https://deb.nodesource.com/node_10.x bionic main
           2: deb-src https://deb.nodesource.com/node_10.x bionic main
           Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list 
           1: deb http://ftp.fau.de/mint/packages tessa main upstream import backport
           2: deb http://mirror.ratiokontakt.de/mirror/ubuntu bionic main restricted universe multiverse
           3: deb http://mirror.ratiokontakt.de/mirror/ubuntu bionic-updates main restricted universe multiverse
           4: deb http://mirror.ratiokontakt.de/mirror/ubuntu bionic-backports main restricted universe multiverse
           5: deb http://security.ubuntu.com/ubuntu/ bionic-security main restricted universe multiverse
           6: deb http://archive.canonical.com/ubuntu/ bionic partner
           Active apt repos in: /etc/apt/sources.list.d/skype-stable.list 
           1: deb [arch=amd64] https://repo.skype.com/deb stable main
           Active apt repos in: /etc/apt/sources.list.d/stefansundin-truecrypt-bionic.list 
           1: deb http://ppa.launchpad.net/stefansundin/truecrypt/ubuntu bionic main
           2: deb-src http://ppa.launchpad.net/stefansundin/truecrypt/ubuntu bionic main

Code: Select all

GET /mirror/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Thu, 26 Apr 2018 23:38:40 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 09:06:51 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
ETag: "3b180-56ac8e31ec000"

GET /mirror/ubuntu/dists/bionic-updates/InRelease HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 23:13:00 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic-updates/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 09:06:51 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
ETag: "15a92-580141e52d700"

GET /mirror/ubuntu/dists/bionic-backports/InRelease HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 23:13:00 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic-backports/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 09:06:51 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
ETag: "12342-580141e52d700"

GET /linux/chrome/deb/dists/stable/InRelease HTTP/1.1
Host: dl.google.com
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://dl.google.com/linux/chrome/deb/dists/stable/InRelease
HTTP/1.1 404 Not Found
Content-Length: 1449
Content-Type: text/html; charset=utf-8
Server: downloads
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block
Date: Wed, 23 Jan 2019 09:06:51 GMT

GET /linux/chrome/deb/dists/stable/Release HTTP/1.1
Host: dl.google.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 22:08:50 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://dl.google.com/linux/chrome/deb/dists/stable/Release
HTTP/1.1 304 Not Modified
Etag: "318540"
Server: downloads
Vary: *
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block
Date: Wed, 23 Jan 2019 09:06:51 GMT

GET /node_10.x/dists/bionic/InRelease HTTP/1.1
Host: deb.nodesource.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Wed, 26 Dec 2018 19:19:00 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: https://deb.nodesource.com/node_10.x/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Connection: keep-alive
Date: Wed, 23 Jan 2019 09:06:51 GMT
Server: nginx
ETag: "5c23d424-1203"
Age: 603
X-Cache: Hit from cloudfront
Via: 1.1 bee9d99ac2913ec4167e166e6bdb691e.cloudfront.net (CloudFront)
X-Amz-Cf-Id: Fz_jXq8bONvHJzTDS0a1l6IXSyWPxDYYR23tGz-lRBIm1kPBEZVUPA==

GET /mint/packages/dists/tessa/InRelease HTTP/1.1
Host: ftp.fau.de
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /js-reynaud/kicad-5/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: ppa.launchpad.net
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Sat, 08 Dec 2018 02:06:25 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ftp.fau.de/mint/packages/dists/tessa/InRelease
HTTP/1.1 404 Not Found
Date: Wed, 23 Jan 2019 09:06:52 GMT
Server: Apache/2.4
Content-Length: 297
Content-Type: text/html; charset=iso-8859-1

GET /mint/packages/dists/tessa/Release HTTP/1.1
Host: ftp.fau.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Fri, 11 Jan 2019 16:07:52 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ftp.fau.de/mint/packages/dists/tessa/Release
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 09:06:52 GMT
Server: Apache/2.4
ETag: "5e41-57f30e5b61f39"

Answer for: http://ppa.launchpad.net/js-reynaud/kicad-5/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 09:06:52 GMT
Server: Apache
Connection: close
ETag: "3c16-57c792dde0dbb"
Expires: Wed, 23 Jan 2019 09:06:52 GMT
Cache-Control: max-age=0, s-maxage=270, proxy-revalidate

GET /ubuntu/dists/bionic/InRelease HTTP/1.1
Host: archive.canonical.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 08 Jan 2019 16:59:54 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /malteworld/ppa/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: ppa.launchpad.net
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Wed, 05 Sep 2018 10:38:13 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://archive.canonical.com/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 09:06:52 GMT
Server: Apache
ETag: "27d6-57ef5464b5e47"

Answer for: http://ppa.launchpad.net/malteworld/ppa/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 09:06:52 GMT
Server: Apache
Connection: close
ETag: "3bf6-5751d5f141aae"
Expires: Wed, 23 Jan 2019 09:06:52 GMT
Cache-Control: max-age=0, s-maxage=270, proxy-revalidate

GET /ubuntu/dists/bionic-security/InRelease HTTP/1.1
Host: security.ubuntu.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Wed, 23 Jan 2019 07:21:00 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /stefansundin/truecrypt/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: ppa.launchpad.net
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Thu, 20 Dec 2018 07:29:56 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ppa.launchpad.net/stefansundin/truecrypt/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 09:06:52 GMT
Server: Apache
Connection: close
ETag: "3c08-57d6f18e486de"
Expires: Wed, 23 Jan 2019 09:06:52 GMT
Cache-Control: max-age=0, s-maxage=270, proxy-revalidate

Answer for: http://security.ubuntu.com/ubuntu/dists/bionic-security/InRelease
HTTP/1.1 200 OK
Date: Wed, 23 Jan 2019 09:06:52 GMT
Server: Apache/2.4.18 (Ubuntu)
Last-Modified: Wed, 23 Jan 2019 08:59:00 GMT
ETag: "15a94-5801c4e05dd00"
Accept-Ranges: bytes
Content-Length: 88724
Cache-Control: max-age=2827, s-maxage=3300, proxy-revalidate
Expires: Wed, 23 Jan 2019 09:54:00 GMT

GET /ubuntu/dists/bionic-security/main/dep11/by-hash/SHA256/78d1b6398c4b9033240f2dc84be365183cbd364fece51f33575bfdd351e26762 HTTP/1.1
Host: security.ubuntu.com
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /deb/dists/stable/InRelease HTTP/1.1
Host: repo.skype.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 13 Nov 2018 20:30:02 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://security.ubuntu.com/ubuntu/dists/bionic-security/main/dep11/by-hash/SHA256/78d1b6398c4b9033240f2dc84be365183cbd364fece51f33575bfdd351e26762
HTTP/1.1 200 OK
Date: Wed, 23 Jan 2019 09:06:52 GMT
Server: Apache/2.4.18 (Ubuntu)
Last-Modified: Wed, 23 Jan 2019 02:43:57 GMT
ETag: "cc-5801710bd5540"
Accept-Ranges: bytes
Content-Length: 204

GET /ubuntu/dists/bionic-security/universe/dep11/by-hash/SHA256/0c3296992420abc4acc8ae73a7bf487628396006782452ae5575bdb22e0a3094 HTTP/1.1
Host: security.ubuntu.com
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /ubuntu/dists/bionic-security/multiverse/dep11/by-hash/SHA256/806a788d4cd8a57ebffe8488b78f6a7a8cbfc831666b769fa796f7d5aca37334 HTTP/1.1
Host: security.ubuntu.com
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: https://repo.skype.com/deb/dists/stable/InRelease
HTTP/1.1 304 Not Modified
Last-Modified: Tue, 13 Nov 2018 20:30:02 GMT
ETag: "1187-57a91aeaa9412"
Cache-Control: max-age=86400
Date: Wed, 23 Jan 2019 09:06:53 GMT
Connection: keep-alive

Answer for: http://security.ubuntu.com/ubuntu/dists/bionic-security/universe/dep11/by-hash/SHA256/0c3296992420abc4acc8ae73a7bf487628396006782452ae5575bdb22e0a3094
HTTP/1.1 200 OK
Date: Wed, 23 Jan 2019 09:06:53 GMT
Server: Apache/2.4.18 (Ubuntu)
Last-Modified: Wed, 23 Jan 2019 02:55:22 GMT
ETag: "39f4-5801739919a80"
Accept-Ranges: bytes
Content-Length: 14836

Answer for: http://security.ubuntu.com/ubuntu/dists/bionic-security/multiverse/dep11/by-hash/SHA256/806a788d4cd8a57ebffe8488b78f6a7a8cbfc831666b769fa796f7d5aca37334
HTTP/1.1 200 OK
Date: Wed, 23 Jan 2019 09:06:53 GMT
Server: Apache/2.4.18 (Ubuntu)
Last-Modified: Wed, 23 Jan 2019 03:06:33 GMT
ETag: "9a0-5801761904040"
Accept-Ranges: bytes
Content-Length: 2464

GET /linux/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: download.docker.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 09:53:13 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: https://download.docker.com/linux/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Connection: keep-alive
Date: Wed, 23 Jan 2019 09:06:54 GMT
x-amz-version-id: llhORS9PDxfjmv5CWPfJO7Nv_k2gIP9d
Server: AmazonS3
ETag: "dccca4e6e5f6802b180552e6bcbeb808"
Age: 697
X-Cache: Hit from cloudfront
Via: 1.1 a148356b14492df0e216c234ac2c2308.cloudfront.net (CloudFront)
X-Amz-Cf-Id: e1vg_L8yIWTcLb2T2AhhbZsO7X2mZ-EajuyLwFkfv38E76PhWRT8Zw==

[gm10]

Your repositories look fine, nothing wrong there. Thanks for the log but I don't think it caught that error this time, I see nothing wrong in there, either. Maybe try the log again later.

[stoffl]

Ok, here's another one. Not sure if it helps.

Code: Select all

GET /mint/packages/dists/tessa/InRelease HTTP/1.1
Host: ftp.fau.de
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ftp.fau.de/mint/packages/dists/tessa/InRelease
HTTP/1.1 404 Not Found
Date: Wed, 23 Jan 2019 10:35:54 GMT
Server: Apache/2.4
Content-Length: 297
Content-Type: text/html; charset=iso-8859-1

GET /mint/packages/dists/tessa/Release HTTP/1.1
Host: ftp.fau.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Fri, 11 Jan 2019 16:07:52 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ftp.fau.de/mint/packages/dists/tessa/Release
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 10:35:54 GMT
Server: Apache/2.4
ETag: "5e41-57f30e5b61f39"

GET /linux/chrome/deb/dists/stable/InRelease HTTP/1.1
Host: dl.google.com
Cache-Control: max-age=0
Accept: text/*
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://dl.google.com/linux/chrome/deb/dists/stable/InRelease
HTTP/1.1 404 Not Found
Content-Length: 1449
Content-Type: text/html; charset=utf-8
Server: downloads
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block
Date: Wed, 23 Jan 2019 10:35:54 GMT

GET /linux/chrome/deb/dists/stable/Release HTTP/1.1
Host: dl.google.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 22:08:50 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /mirror/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Thu, 26 Apr 2018 23:38:40 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 10:35:54 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
ETag: "3b180-56ac8e31ec000"

GET /mirror/ubuntu/dists/bionic-updates/InRelease HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 23:13:00 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://dl.google.com/linux/chrome/deb/dists/stable/Release
HTTP/1.1 304 Not Modified
Etag: "318540"
Server: downloads
Vary: *
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Xss-Protection: 1; mode=block
Date: Wed, 23 Jan 2019 10:35:54 GMT

GET /js-reynaud/kicad-5/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: ppa.launchpad.net
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Sat, 08 Dec 2018 02:06:25 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic-updates/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 10:35:54 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
ETag: "15a92-580141e52d700"

GET /mirror/ubuntu/dists/bionic-backports/InRelease HTTP/1.1
Host: mirror.ratiokontakt.de
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 23:13:00 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://mirror.ratiokontakt.de/mirror/ubuntu/dists/bionic-backports/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 10:35:54 GMT
Server: Apache/2.4.6 (CentOS) OpenSSL/1.0.2k-fips
ETag: "12342-580141e52d700"

Answer for: http://ppa.launchpad.net/js-reynaud/kicad-5/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 10:35:54 GMT
Server: Apache
Connection: close
ETag: "3c16-57c792dde0dbb"
Expires: Wed, 23 Jan 2019 10:35:54 GMT
Cache-Control: max-age=0, s-maxage=270, proxy-revalidate

GET /node_10.x/dists/bionic/InRelease HTTP/1.1
Host: deb.nodesource.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Wed, 26 Dec 2018 19:19:00 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: https://deb.nodesource.com/node_10.x/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Connection: keep-alive
Date: Wed, 23 Jan 2019 10:35:54 GMT
Server: nginx
ETag: "5c23d424-1203"
Age: 421
X-Cache: Hit from cloudfront
Via: 1.1 5d8c59c4e33ff30f6610982ac8ad0232.cloudfront.net (CloudFront)
X-Amz-Cf-Id: a96PdhCIUKKWhojbFjWBvgWddtJXBR9VTeDztPZwVIz-JkeHgYD1eA==

GET /deb/dists/stable/InRelease HTTP/1.1
Host: repo.skype.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 13 Nov 2018 20:30:02 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


GET /malteworld/ppa/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: ppa.launchpad.net
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Wed, 05 Sep 2018 10:38:13 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: https://repo.skype.com/deb/dists/stable/InRelease
HTTP/1.1 304 Not Modified
Last-Modified: Tue, 13 Nov 2018 20:30:02 GMT
ETag: "1187-57a91aeaa9412"
Cache-Control: max-age=86400
Date: Wed, 23 Jan 2019 10:35:54 GMT
Connection: keep-alive

GET /linux/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: download.docker.com
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Tue, 22 Jan 2019 09:53:13 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ppa.launchpad.net/malteworld/ppa/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 10:35:54 GMT
Server: Apache
Connection: close
ETag: "3bf6-5751d5f141aae"
Expires: Wed, 23 Jan 2019 10:35:54 GMT
Cache-Control: max-age=0, s-maxage=270, proxy-revalidate

Answer for: https://download.docker.com/linux/ubuntu/dists/bionic/InRelease
HTTP/1.1 200 OK
Content-Type: binary/octet-stream
Content-Length: 64442
Connection: keep-alive
Last-Modified: Wed, 23 Jan 2019 09:38:41 GMT
x-amz-version-id: jECF8HeguJcgxJp.sH_ThYpM8s8q7PHf
Server: AmazonS3
Date: Wed, 23 Jan 2019 10:35:22 GMT
ETag: "32183c0c89d96fffb2567175ed3d8946"
Age: 144
X-Cache: Hit from cloudfront
Via: 1.1 9ab847fabb8c9edbd39cff57c2a2f4c0.cloudfront.net (CloudFront)
X-Amz-Cf-Id: LYlrH-dD9aAlNJ2JTj7CQCvkeN5Zs0zfb6exU2-uPCvHabUQgOWTRQ==

GET /stefansundin/truecrypt/ubuntu/dists/bionic/InRelease HTTP/1.1
Host: ppa.launchpad.net
Cache-Control: max-age=0
Accept: text/*
If-Modified-Since: Thu, 20 Dec 2018 07:29:56 GMT
User-Agent: Debian APT-HTTP/1.3 (1.6.6)


Answer for: http://ppa.launchpad.net/stefansundin/truecrypt/ubuntu/dists/bionic/InRelease
HTTP/1.1 304 Not Modified
Date: Wed, 23 Jan 2019 10:35:55 GMT
Server: Apache
Connection: close
ETag: "3c08-57d6f18e486de"
Expires: Wed, 23 Jan 2019 10:35:55 GMT
Cache-Control: max-age=0, s-maxage=270, proxy-revalidate

E: Das Depot »http://archive.canonical.com/ubuntu bionic Release« enthält keine Release-Datei mehr.
N: Eine Aktualisierung von solch einem Depot kann nicht auf eine sichere Art durchgeführt werden, daher ist es standardmäßig deaktiviert.
N: Weitere Details zur Erzeugung von Paketdepots sowie zu deren Benutzerkonfiguration finden Sie in der Handbuchseite apt-secure(8).
E: Das Depot »http://security.ubuntu.com/ubuntu bionic-security Release« enthält keine Release-Datei mehr.
N: Eine Aktualisierung von solch einem Depot kann nicht auf eine sichere Art durchgeführt werden, daher ist es standardmäßig deaktiviert.
N: Weitere Details zur Erzeugung von Paketdepots sowie zu deren Benutzerkonfiguration finden Sie in der Handbuchseite apt-secure(8).

[gm10]

It's weird because it's complaining about not finding a file that it never says it even tried to download.

Let's try this a last time. First let's clear out all the lists again so it all has to be downloaded:

Code: Select all

sudo rm -rf /var/lib/apt/lists/*

Then the fun stuff, more debug options:

Code: Select all

sudo apt-get update -o Debug::pkgAcquire=1 -o Debug::Acquire::Transaction=1 -o Debug::pkgAcquire::Worker=1 -o Debug::Acquire::http=1 -o Debug::Acquire::https=1 2>~/apt.log

If you run it like this it will generate so many debug messages that you'll probably want to add it as an attachment.

[stoffl]

Ok, catched the error for repo.skype.com. See attachment.

[gm10]

There you go, I think we finally got it. It is trying to connect to skype via IPv6 addressing whereas all other successful downloads were using IPv4 addressing. We could troubleshoot your IPv6 connectivity but unless you need IPv6 at this time my suggestion would be to disable it. For that go to your connection settings and on the IPv6 Settings tab you change the Method to Ignore. Then disconnect and reconnect your connection and hopefully that will resolve the issue for good.

[stoffl]

Ok, sounds reasonable. I've disabled IPv6 now. Lets see how this goes.

But this makes me wonder what has changed. I'm on this connection for years. Same for Linux Mint. I didn't change my network at all. Seems time has come where my (quite solid) IPv4 knowledge is not sufficient any more and I have to dig into IPv6 details.

Thanks a lot for your help. I'll also update the OP if the solution works.

[gm10]

I can't say what changed, other than updates to the software involved. Is your connection even IPv6 enabled? It's possible the system only thought so but your ISP's gateway doesn't actually forward that and that's why it failed.

[stoffl]

To my knowledge my DD-WRT based router (connected to a cable modem) doesn't even support IPv6. I must have accidentaly enabled it in my network settings (or is it enabled by default?).

[gm10]

It's enabled by default but assuming you get your gateway via DHCP it shouldn't have configured a route for IPv6 and thus programs should have no reason to connect to it. At least that's the theory, clearly it doesn't always translate to the same thing in practice, but that's all I can tell you really, I'm not sure where the exact problem lies. Hopefully the workaround I could give you did solve the issue for you though.