Package manager broken in Lubuntu 17

I'm running Ubuntu 17.10 (actually "Lubuntu", if it matters). Lately I can't use apt or apt-get, it always fails with missing packages.

Here's what happens when I run sudo apt-get install brasero:

Quote:

:~$ sudo apt-get install brasero -y Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: linux-headers-4.10.0-19 linux-headers-4.10.0-19-generic linux-headers-4.8.0-59 linux-headers-4.8.0-59-generic linux-image-4.10.0-19-generic linux-image-4.8.0-59-generic linux-image-extra-4.10.0-19-generic linux-image-extra-4.8.0-59-generic Use 'sudo apt autoremove' to remove them. The following additional packages will be installed: brasero-cdrkit brasero-common cdrdao dvd+rw-tools dvdauthor growisofs libao-common libao4 libbrasero-media3-1 libgmime-3.0-0 libperl4-corelibs-perl libtotem-plparser-common libtotem-plparser18 libyelp0 nautilus-extension-brasero wodim yelp yelp-xsl Suggested packages: vcdimager libdvdcss2 tracker readom cdrskin cdrkit-doc The following NEW packages will be installed: brasero brasero-cdrkit brasero-common cdrdao dvd+rw-tools dvdauthor growisofs libao-common libao4 libbrasero-media3-1 libgmime-3.0-0 libperl4-corelibs-perl libtotem-plparser-common libtotem-plparser18 libyelp0 nautilus-extension-brasero wodim yelp yelp-xsl 0 upgraded, 19 newly installed, 0 to remove and 1 not upgraded. Need to get 1,494 kB/4,383 kB of archives. After this operation, 20.9 MB of additional disk space will be used. Err:1 http://us.archive.ubuntu.com/ubuntu artful/main amd64 libgmime-3.0-0 amd64 3.0.2-1 404 Not Found Ign:2 http://us.archive.ubuntu.com/ubuntu artful/main amd64 libtotem-plparser-common all 3.10.8-3ubuntu1 Err:3 http://us.archive.ubuntu.com/ubuntu artful/main amd64 libtotem-plparser18 amd64 3.10.8-3ubuntu1 404 Not Found Err:4 http://us.archive.ubuntu.com/ubuntu artful/universe amd64 growisofs amd64 7.1-11.1 404 Not Found Err:5 http://us.archive.ubuntu.com/ubuntu artful/universe amd64 dvd+rw-tools amd64 7.1-11.1 404 Not Found Ign:6 http://us.archive.ubuntu.com/ubuntu artful/universe amd64 libperl4-corelibs-perl all 0.003-2 Err:7 http://us.archive.ubuntu.com/ubuntu artful/main amd64 libyelp0 amd64 3.26.0-1ubuntu1 404 Not Found Ign:8 http://us.archive.ubuntu.com/ubuntu artful/main amd64 yelp-xsl all 3.20.1-2 Err:9 http://us.archive.ubuntu.com/ubuntu artful/main amd64 yelp amd64 3.26.0-1ubuntu1 404 Not Found Err:10 http://us.archive.ubuntu.com/ubuntu artful/universe amd64 cdrdao amd64 1:1.2.3-3 404 Not Found Err:2 http://us.archive.ubuntu.com/ubuntu artful/main i386 libtotem-plparser-common all 3.10.8-3ubuntu1 404 Not Found Err:6 http://us.archive.ubuntu.com/ubuntu artful/universe i386 libperl4-corelibs-perl all 0.003-2 404 Not Found Err:8 http://us.archive.ubuntu.com/ubuntu artful/main i386 yelp-xsl all 3.20.1-2 404 Not Found E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/....2-1_amd64.deb 404 Not Found E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/...buntu1_all.deb 404 Not Found E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/...ntu1_amd64.deb 404 Not Found E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/...11.1_amd64.deb 404 Not Found E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/...11.1_amd64.deb 404 Not Found E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/....003-2_all.deb 404 Not Found E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/...ntu1_amd64.deb 404 Not Found E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/...20.1-2_all.deb 404 Not Found E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/...ntu1_amd64.deb 404 Not Found E: Failed to fetch http://us.archive.ubuntu.com/ubuntu/....3-3_amd64.deb 404 Not Found E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

Running apt-get update gets the same kind of errors:

Quote:

wrybread@wrycade:~$ sudo apt-get update Get:1 http://dl.google.com/linux/chrome/deb stable InRelease [1,811 B] Ign:2 http://us.archive.ubuntu.com/ubuntu artful InRelease Ign:3 https://ookla.bintray.com/debian artful InRelease Err:1 http://dl.google.com/linux/chrome/deb stable InRelease The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 78BD65473CB3BD13 Err:4 http://us.archive.ubuntu.com/ubuntu artful Release 404 Not Found Err:5 https://ookla.bintray.com/debian artful Release 404 Not Found [IP: 52.88.32.158 443] Hit:6 http://ppa.launchpad.net/apandada1/b...troller/ubuntu artful InRelease Ign:7 http://ppa.launchpad.net/daveg/attract/ubuntu artful InRelease Err:8 http://ppa.launchpad.net/jonathonf/ffmpeg-3/ubuntu artful InRelease 403 Forbidden [IP: 2001:67c:1560:8008::15 80] Ign:9 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu artful InRelease Hit:10 http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu artful InRelease Ign:11 http://ppa.launchpad.net/vlijm/nonotifs/ubuntu artful InRelease Err:12 http://ppa.launchpad.net/daveg/attract/ubuntu artful Release 404 Not Found [IP: 2001:67c:1560:8008::15 80] Err:13 http://ppa.launchpad.net/mc3man/trusty-media/ubuntu artful Release 404 Not Found [IP: 2001:67c:1560:8008::15 80] Err:14 http://ppa.launchpad.net/vlijm/nonotifs/ubuntu artful Release 404 Not Found [IP: 2001:67c:1560:8008::15 80] Reading package lists... Done W: GPG error: http://dl.google.com/linux/chrome/deb stable InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 78BD65473CB3BD13 E: The repository 'http://dl.google.com/linux/chrome/deb stable InRelease' is no longer signed. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://us.archive.ubuntu.com/ubuntu artful Release' no longer has a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'https://ookla.bintray.com/debian artful Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://ppa.launchpad.net/daveg/attract/ubuntu artful Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://ppa.launchpad.net/mc3man/trusty-media/ubuntu artful Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. E: The repository 'http://ppa.launchpad.net/vlijm/nonotifs/ubuntu artful Release' does not have a Release file. N: Updating from such a repository can't be done securely, and is therefore disabled by default. N: See apt-secure(8) manpage for repository creation and user configuration details. wrybread@wrycade:~$

Here's the contents of /etc/apt/sources.list:

Quote:

###### Ubuntu Main Repos deb http://us.archive.ubuntu.com/ubuntu/ artful main restricted universe deb-src http://us.archive.ubuntu.com/ubuntu/ artful main restricted universe

Running apt-get with "--fix-missing" doesn't fix the problem either.

It's pretty frustrating, I can't install or update anything.

I don't imagine anyone has any tips?