[PROBLEM] Distribution upgrade to Buster fails

[Nachteule]

Did it. Some packages could not be installed

Code:

E: Unable to locate package 4acl
E: Package 'alsa-base' has no installation candidate
E: Unable to locate package cpp-4.6
E: Couldn't find any package by glob 'cpp-4.6'
E: Couldn't find any package by regex 'cpp-4.6'
E: Unable to locate package cpp-4.9
E: Couldn't find any package by glob 'cpp-4.9'
E: Couldn't find any package by regex 'cpp-4.9'
E: Unable to locate package g++-4.9
E: Couldn't find any package by glob 'g++-4.9'
E: Couldn't find any package by regex 'g++-4.9'
E: Unable to locate package gcc-4.5-base:armhf
E: Couldn't find any package by glob 'gcc-4.5-base'
E: Couldn't find any package by regex 'gcc-4.5-base'
E: Package 'gcc-4.6' has no installation candidate
E: Unable to locate package gcc-4.6-base:armhf
E: Couldn't find any package by glob 'gcc-4.6-base'
E: Couldn't find any package by regex 'gcc-4.6-base'
E: Package 'gcc-4.9' has no installation candidate
E: Unable to locate package gcc-4.9-base:armhf
E: Couldn't find any package by glob 'gcc-4.9-base'
E: Couldn't find any package by regex 'gcc-4.9-base'
E: Package 'get-iplayer' has no installation candidate
E: Unable to locate package jonhedgerows-keyring
E: Package 'libapt-inst1.5' has no installation candidate
E: Package 'libapt-pkg4.12' has no installation candidate
E: Unable to locate package libasan1:armhf
E: Package 'libasprintf0c2' has no installation candidate
E: Package 'libavcodec56' has no installation candidate
E: Unable to locate package libavdevice55:armhf
E: Unable to locate package libavformat56:armhf
E: Unable to locate package libavresample2:armhf
E: Unable to locate package libavutil51:armhf
E: Unable to locate package libavutil54:armhf
E: Unable to locate package libbind9-90
E: Package 'libcec3' has no installation candidate
E: Unable to locate package libdirac-encoder0:armhf
E: Unable to locate package libdns-export100
E: Unable to locate package libdns100
E: Unable to locate package libgcc-4.9-dev:armhf
E: Couldn't find any package by glob 'libgcc-4.9-dev'
E: Couldn't find any package by regex 'libgcc-4.9-dev'
E: Unable to locate package libgcrypt11:armhf
E: Unable to locate package libgnutls-deb0-28:armhf
E: Unable to locate package libgnutls26:armhf
E: Unable to locate package libhogweed2:armhf
E: Unable to locate package libicu52:armhf
E: Unable to locate package libimobiledevice4:armhf
E: Unable to locate package libirs-export91
E: Unable to locate package libisc-export95
E: Unable to locate package libisc95
E: Unable to locate package libisccc90
E: Unable to locate package libisccfg-export90
E: Unable to locate package libisccfg90
E: Unable to locate package libisl10:armhf
E: Unable to locate package libjasper1:armhf
E: Unable to locate package libjson-c2:armhf
E: Unable to locate package libjson0:armhf
E: Unable to locate package liblwres90
E: Unable to locate package libmicrohttpd10
E: Unable to locate package libmpc2:armhf
E: Package 'libmysqlclient18' has no installation candidate
E: Package 'libnettle4' has no installation candidate
E: Unable to locate package libopenjpeg5:armhf
E: Package 'libplist2' has no installation candidate
E: Unable to locate package libprocps0:armhf
E: Unable to locate package libprocps3:armhf
E: Unable to locate package libpsl0:armhf
E: Package 'libreadline6' has no installation candidate
E: Unable to locate package libschroedinger-1.0-0:armhf
E: Couldn't find any package by glob 'libschroedinger-1.0-0'
E: Couldn't find any package by regex 'libschroedinger-1.0-0'
E: Package 'libssl1.0.0' has no installation candidate
E: Unable to locate package libstdc++-4.9-dev:armhf
E: Couldn't find any package by glob 'libstdc++-4.9-dev'
E: Couldn't find any package by regex 'libstdc++-4.9-dev'
E: Unable to locate package libswscale3:armhf
E: Unable to locate package libtasn1-3:armhf
E: Unable to locate package libudev0:armhf
E: Unable to locate package libusbmuxd2:armhf
E: Package 'libvncserver0' has no installation candidate
E: Unable to locate package libvpx1:armhf
E: Unable to locate package libwebp5:armhf
E: Unable to locate package libwebpdemux1:armhf
E: Unable to locate package libwebpmux1:armhf
E: Unable to locate package libx264-142:armhf
E: Unable to locate package libxtables10
E: Unable to locate package raspbian-archive-keyring

Distribution upgrade finished without serious issues [1], and system comes up as expected.

So, one or a couple of those old packages breaks your upgrade. You should get rid of them

If this is your Raspbian based installation for Pi2, you have to replace raspbian-archive-keyring with debian-archive-keyring before upgrade. This is VERY important

[1] lcdproc reported error but did not brake the upgrade process

Code:

dpkg: error processing package lcdproc (--configure):
installed lcdproc package post-installation script subprocess returned error exit status 20

but a sudo apt-get install -f && sudo apt-get install --reinstall xbian-update
did it