Upgrade from 18.04 to 20.04 error "Could not calculate the upgrade"

[baps55]

While trying to upgrade from 18.04 to 20.04 I am getting the following message

Could not calculate the upgrade
An unresolvable problem occurred while calculating the upgrade.

If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. If you want to investigate this yourself the log files in '/var/log/dist-upgrade' will contain details about the upgrade. Specifically, look at 'main.log' and 'apt.log'.

I have tried the following:

• apt-get update (all 0)
• apt-get upgrade (all 0)
• apt-get autoclean
• apt-get check
• apt-get dist-upgrade
• apt install -f
• apt update && apt full-upgrade
• dpkg --configure -a
• apt autoremove

All outputs are 0

Output of grep Broken apt.log

Broken dpkg:amd64 Breaks on libapt-pkg5.0:amd64 < 1.6.17 @ii mK > (< 1.7~b)
Broken libuno-sal3:amd64 Breaks on uno-libs3:amd64 < 6.0.7-0ubuntu0.18.04.13 @ii mK >
Broken libgcc1:amd64 Conflicts on libgcc1:i386 < 1:8.4.0-1ubuntu1~18.04 -> 1:10.3.0-1ubuntu1~20.04 @ii umU Ib >
Broken libqt5core5a:amd64 Breaks on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mK > (< 4:4.8.7+dfsg-20~)
Broken libpython2-stdlib:amd64 Breaks on libpython-stdlib:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
Broken python2-minimal:amd64 Breaks on python-minimal:amd64 < 2.7.15~rc1-1 @ii gK > (< 2.7.15-2)
Broken gnome-settings-daemon-common:amd64 Breaks on gnome-settings-daemon-schemas:amd64 < 3.28.1-0ubuntu1.3 @ii mK > (< 3.30.1.2-2~)
Broken libqtdbus4:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqt4-declarative:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqtgui4:amd64 Depends on libqt4-declarative:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqt4-xml:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken qt-at-spi:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.8~)
Broken libqt4-network:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libldb2:amd64 Breaks on libldb1:amd64 < 2:1.2.3-1ubuntu0.2 @ii mK > (< 2:2~)
Broken libqt4-script:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libsensors-config:amd64 Conflicts on libsensors4:amd64 < 1:3.4.0-4ubuntu0.1 @ii mK >
Broken libsensors-config:amd64 Conflicts on libsensors4:i386 < 1:3.4.0-4ubuntu0.1 @ii mK >
Broken libqt4-sql:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libomp-dev:amd64 Depends on libomp-10-dev:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)
Broken libqt4-sql-mysql:amd64 Depends on libqt4-sql:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqt4-dbus:amd64 Depends on libqtdbus4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqt4-xmlpatterns:amd64 Depends on libqt4-network:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken fwupdate:amd64 Breaks on fwupdate-signed:amd64 < 12-7~ubuntu18.04.3 @ii mK >
Broken fwupdate:amd64 Breaks on libfwup1:amd64 < 12-3bionic2 @ii mK > (< 12-5)
Broken qdbus:amd64 Depends on libqt4-xml:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqt4-svg:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqt4-help:amd64 Depends on libqt4-network:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libedata-book-1.2-25:amd64 Depends on libebackend-1.2-10:amd64 < 3.28.5-0ubuntu0.18.04.3 -> 3.36.5-0ubuntu1 @ii umU > (= 3.28.5-0ubuntu0.18.04.3)
Broken libqtassistantclient4:amd64 Depends on libqt4-network:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (>= 4:4.8.1)
Broken libqt4-test:amd64 Depends on libqtcore4:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libqt4-scripttools:amd64 Depends on libqt4-script:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libomp5:amd64 Depends on libomp5-10:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)
Broken libqt4-designer:amd64 Depends on libqt4-script:amd64 < 4:4.8.7+dfsg-7ubuntu1 @ii mR > (= 4:4.8.7+dfsg-7ubuntu1)
Broken libcupsppdc1:amd64 Depends on libcups2:amd64 < 2.2.7-1ubuntu2.9 -> 2.3.1-9ubuntu1.2 @ii umU > (= 2.2.7-1ubuntu2.9)
Broken python3-pyqt4:amd64 Depends on python3:amd64 < 3.6.7-1~18.04 -> 3.8.2-0ubuntu2 @ii umU > (< 3.7)
Broken libsnmp30:amd64 Depends on libsensors4:amd64 < 1:3.4.0-4ubuntu0.1 @ii mR > (>= 1:3.0.0)
Broken libedata-cal-1.2-28:amd64 Depends on libebackend-1.2-10:amd64 < 3.28.5-0ubuntu0.18.04.3 -> 3.36.5-0ubuntu1 @ii umU > (= 3.28.5-0ubuntu0.18.04.3)
Broken libpolkit-backend-1-0:amd64 Depends on libpolkit-gobject-1-0:amd64 < 0.105-20ubuntu0.18.04.6 -> 0.105-26ubuntu1.3 @ii umU > (= 0.105-20ubuntu0.18.04.6)
Broken libcupscgi1:amd64 Depends on libcups2:amd64 < 2.2.7-1ubuntu2.9 -> 2.3.1-9ubuntu1.2 @ii umU > (= 2.2.7-1ubuntu2.9)
Broken libcupsmime1:amd64 Depends on libcups2:amd64 < 2.2.7-1ubuntu2.9 -> 2.3.1-9ubuntu1.2 @ii umU > (= 2.2.7-1ubuntu2.9)
Broken libebook-1.2-19:amd64 Depends on libedata-book-1.2-25:amd64 < 3.28.5-0ubuntu0.18.04.3 @ii mR > (= 3.28.5-0ubuntu0.18.04.3)
Broken libapt-inst2.0:amd64 Depends on libapt-pkg5.0:amd64 < 1.6.17 @ii mR > (>= 1.1~exp9)
Broken libomp5-9:amd64 Breaks on libomp5:amd64 < 5.0.1-1 | 1:10.0-50~exp1 @ii umH > (< 44)
Broken libomp5:amd64 Depends on libomp5-10:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)
Broken libomp5-9:amd64 Breaks on libomp5:amd64 < 5.0.1-1 | 1:10.0-50~exp1 @ii umH > (< 44)
Broken libomp5:amd64 Depends on libomp5-10:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)
Broken libomp5-9:amd64 Breaks on libomp5:amd64 < 5.0.1-1 | 1:10.0-50~exp1 @ii umH > (< 44)
Broken libomp5:amd64 Depends on libomp5-10:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)
Broken libomp5-9:amd64 Breaks on libomp5:amd64 < 5.0.1-1 | 1:10.0-50~exp1 @ii umH > (< 44)
Broken libomp5:amd64 Depends on libomp5-10:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)
Broken libomp5-9:amd64 Breaks on libomp5:amd64 < 5.0.1-1 | 1:10.0-50~exp1 @ii umH > (< 44)
Broken libomp5:amd64 Depends on libomp5-10:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)
Broken libomp5-9:amd64 Breaks on libomp5:amd64 < 5.0.1-1 | 1:10.0-50~exp1 @ii umH > (< 44)
Broken libomp5:amd64 Depends on libomp5-10:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)
Broken libomp5-9:amd64 Breaks on libomp5:amd64 < 5.0.1-1 | 1:10.0-50~exp1 @ii umH > (< 44)
Broken libomp5:amd64 Depends on libomp5-10:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)
Broken libomp5-9:amd64 Breaks on libomp5:amd64 < 5.0.1-1 | 1:10.0-50~exp1 @ii umH > (< 44)
Broken libomp5:amd64 Depends on libomp5-10:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)
Broken libomp5-9:amd64 Breaks on libomp5:amd64 < 5.0.1-1 | 1:10.0-50~exp1 @ii umH > (< 44)
Broken libomp5:amd64 Depends on libomp5-10:amd64 < none | 1:10.0.0-4ubuntu1 @un uH > (>= 10~)

Content of main.log

2023-05-29 22:19:44,598 INFO Using config files '['./DistUpgrade.cfg.bionic', '/etc/update-manager/release-upgrades.d/ubuntu-advantage-upgrades.cfg']'
2023-05-29 22:19:44,599 INFO uname information: 'Linux Aspire-A515-51G 4.15.0-211-generic #222-Ubuntu SMP Tue Apr 18 18:55:06 UTC 2023 x86_64'
2023-05-29 22:19:45,326 INFO apt version: '1.6.17'
2023-05-29 22:19:45,327 INFO python version: '3.6.9 (default, Mar 10 2023, 16:46:00) 
[GCC 8.4.0]'
2023-05-29 22:19:45,331 INFO release-upgrader version '20.04.40' started
2023-05-29 22:19:45,430 INFO locale: 'en_IN' 'ISO8859-1'
2023-05-29 22:19:45,862 DEBUG Using 'DistUpgradeViewGtk3' view
2023-05-29 22:19:45,943 DEBUG enable dpkg --force-overwrite
2023-05-29 22:19:45,967 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2023-05-29 22:19:53,435 DEBUG lsb-release: 'bionic'
2023-05-29 22:19:53,436 DEBUG _pythonSymlinkCheck run
2023-05-29 22:19:53,437 DEBUG openCache()
2023-05-29 22:19:53,437 DEBUG quirks: running PreCacheOpen
2023-05-29 22:19:53,437 DEBUG running Quirks.PreCacheOpen
2023-05-29 22:19:55,812 DEBUG Comparing 4.15.0-211 with 
2023-05-29 22:19:55,815 DEBUG Comparing 4.15.0-88 with 4.15.0-211
2023-05-29 22:19:56,632 DEBUG /openCache(), new cache size 115764
2023-05-29 22:19:56,632 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2023-05-29 22:19:56,633 DEBUG checkViewDepends()
2023-05-29 22:19:56,636 DEBUG running doUpdate() (showErrors=False)
2023-05-29 22:20:01,608 DEBUG openCache()
2023-05-29 22:20:03,996 DEBUG Comparing 4.15.0-211 with 
2023-05-29 22:20:03,999 DEBUG Comparing 4.15.0-88 with 4.15.0-211
2023-05-29 22:20:04,835 DEBUG /openCache(), new cache size 115764
2023-05-29 22:20:04,835 DEBUG doPostInitialUpdate
2023-05-29 22:20:04,836 DEBUG quirks: running focalPostInitialUpdate
2023-05-29 22:20:04,836 DEBUG running Quirks.focalPostInitialUpdate
2023-05-29 22:20:08,550 WARNING error reading deb2snap.json file (Expected a string or a pair of strings)
2023-05-29 22:20:09,059 DEBUG Snap core18 is installed
2023-05-29 22:20:09,671 DEBUG Snap gnome-3-34-1804 is installed
2023-05-29 22:20:09,674 DEBUG Snap gnome-3-34-1804 is not tracking the release channel
2023-05-29 22:20:09,906 DEBUG Snap gtk-common-themes is installed
2023-05-29 22:20:10,570 DEBUG Snap bare is installed
2023-05-29 22:20:10,570 DEBUG Snap bare is not tracking the release channel
2023-05-29 22:20:10,877 DEBUG Snap canonical-livepatch is installed
2023-05-29 22:20:10,878 DEBUG Snap canonical-livepatch is not tracking the release channel
2023-05-29 22:20:11,286 DEBUG Snap chromium-ffmpeg is installed
2023-05-29 22:20:11,287 DEBUG Snap chromium-ffmpeg is not tracking the release channel
2023-05-29 22:20:11,793 DEBUG Snap core is installed
2023-05-29 22:20:11,793 DEBUG Snap core is not tracking the release channel
2023-05-29 22:20:12,001 DEBUG Snap core20 is installed
2023-05-29 22:20:12,002 DEBUG Snap core20 is not tracking the release channel
2023-05-29 22:20:12,413 DEBUG Snap core22 is installed
2023-05-29 22:20:12,413 DEBUG Snap core22 is not tracking the release channel
2023-05-29 22:20:12,635 DEBUG Snap gnome-3-26-1604 is installed
2023-05-29 22:20:12,890 DEBUG Snap gnome-3-28-1804 is installed
2023-05-29 22:20:12,891 DEBUG Snap gnome-3-28-1804 is not tracking the release channel
2023-05-29 22:20:13,235 DEBUG Snap gnome-3-38-2004 is installed
2023-05-29 22:20:13,235 DEBUG Snap gnome-3-38-2004 is not tracking the release channel
2023-05-29 22:20:13,456 DEBUG Snap gnome-42-2204 is installed
2023-05-29 22:20:13,457 DEBUG Snap gnome-42-2204 is not tracking the release channel
2023-05-29 22:20:13,843 DEBUG Snap gnome-calculator is installed
2023-05-29 22:20:14,263 DEBUG Snap gnome-characters is installed
2023-05-29 22:20:14,447 DEBUG Snap gnome-logs is installed
2023-05-29 22:20:14,772 DEBUG Snap gnome-system-monitor is installed
2023-05-29 22:20:15,173 DEBUG Snap john-the-ripper is installed
2023-05-29 22:20:15,174 DEBUG Snap john-the-ripper is not tracking the release channel
2023-05-29 22:20:15,590 DEBUG Snap opera is installed
2023-05-29 22:20:15,591 DEBUG Snap opera is not tracking the release channel
2023-05-29 22:20:15,860 DEBUG Snap ruby is installed
2023-05-29 22:20:15,861 DEBUG Snap ruby is not tracking the release channel
2023-05-29 22:20:22,348 DEBUG MetaPkgs: ubuntu-desktop
2023-05-29 22:20:29,924 DEBUG Foreign: 
2023-05-29 22:20:29,924 DEBUG Obsolete: cpu-g icaclient virtualbox-5.2 zoom
2023-05-29 22:20:29,925 DEBUG updateSourcesList()
2023-05-29 22:20:30,017 DEBUG rewriteSourcesList() with mirror_check
2023-05-29 22:20:30,018 DEBUG ['ubuntu-minimal', 'ubuntu-standard']
2023-05-29 22:20:30,018 DEBUG Checking pkg: ubuntu-minimal
2023-05-29 22:20:30,022 DEBUG Checking pkg: ubuntu-standard
2023-05-29 22:20:30,026 DEBUG examining: 'deb https://cz.archive.ubuntu.com/ubuntu/ bionic main restricted'
2023-05-29 22:20:30,026 DEBUG verifySourcesListEntry: deb https://cz.archive.ubuntu.com/ubuntu/ focal main restricted
2023-05-29 22:20:30,026 DEBUG url_downloadable: https://cz.archive.ubuntu.com/ubuntu//dists/focal/Release
2023-05-29 22:20:30,026 DEBUG s='https' n='cz.archive.ubuntu.com' p='/ubuntu//dists/focal/Release' q='' f=''
2023-05-29 22:20:30,236 DEBUG entry 'deb https://cz.archive.ubuntu.com/ubuntu/ focal main restricted' updated to new dist
2023-05-29 22:20:30,237 DEBUG examining: 'deb https://cz.archive.ubuntu.com/ubuntu/ bionic-updates main restricted'
2023-05-29 22:20:30,237 DEBUG entry 'deb https://cz.archive.ubuntu.com/ubuntu/ focal-updates main restricted' updated to new dist
2023-05-29 22:20:30,237 DEBUG examining: 'deb https://cz.archive.ubuntu.com/ubuntu/ bionic universe'
2023-05-29 22:20:30,238 DEBUG entry 'deb https://cz.archive.ubuntu.com/ubuntu/ focal universe' updated to new dist
2023-05-29 22:20:30,238 DEBUG examining: 'deb https://cz.archive.ubuntu.com/ubuntu/ bionic-updates universe'
2023-05-29 22:20:30,238 DEBUG entry 'deb https://cz.archive.ubuntu.com/ubuntu/ focal-updates universe' updated to new dist
2023-05-29 22:20:30,239 DEBUG examining: 'deb https://cz.archive.ubuntu.com/ubuntu/ bionic multiverse'
2023-05-29 22:20:30,239 DEBUG entry 'deb https://cz.archive.ubuntu.com/ubuntu/ focal multiverse' updated to new dist
2023-05-29 22:20:30,239 DEBUG examining: 'deb https://cz.archive.ubuntu.com/ubuntu/ bionic-updates multiverse'
2023-05-29 22:20:30,239 DEBUG entry 'deb https://cz.archive.ubuntu.com/ubuntu/ focal-updates multiverse' updated to new dist
2023-05-29 22:20:30,240 DEBUG examining: 'deb https://cz.archive.ubuntu.com/ubuntu/ bionic-security main restricted'
2023-05-29 22:20:30,240 DEBUG entry 'deb https://cz.archive.ubuntu.com/ubuntu/ focal-security main restricted' updated to new dist
2023-05-29 22:20:30,240 DEBUG examining: 'deb https://cz.archive.ubuntu.com/ubuntu/ bionic-security universe'
2023-05-29 22:20:30,240 DEBUG entry 'deb https://cz.archive.ubuntu.com/ubuntu/ focal-security universe' updated to new dist
2023-05-29 22:20:30,240 DEBUG examining: 'deb https://cz.archive.ubuntu.com/ubuntu/ bionic-security multiverse'
2023-05-29 22:20:30,241 DEBUG entry 'deb https://cz.archive.ubuntu.com/ubuntu/ focal-security multiverse' updated to new dist
2023-05-29 22:20:30,246 DEBUG running doUpdate() (showErrors=True)
2023-05-29 22:21:03,484 DEBUG openCache()
2023-05-29 22:21:05,318 DEBUG Comparing 4.15.0-211 with 
2023-05-29 22:21:05,319 DEBUG Comparing 4.15.0-88 with 4.15.0-211
2023-05-29 22:21:06,019 DEBUG /openCache(), new cache size 86403
2023-05-29 22:21:06,019 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2023-05-29 22:21:06,020 DEBUG quirks: running PreDistUpgradeCache
2023-05-29 22:21:06,020 DEBUG running Quirks.PreDistUpgradeCache
2023-05-29 22:21:06,020 INFO checking for python-dbg (auto_inst=False)
2023-05-29 22:21:06,020 INFO checking for python-doc (auto_inst=False)
2023-05-29 22:21:06,020 INFO checking for python-minimal (auto_inst=False)
2023-05-29 22:21:06,020 INFO installing python-is-python2 because python-minimal was installed
2023-05-29 22:21:06,020 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2023-05-29 22:21:06,052 INFO removing python-minimal because python-is-python2 is being installed
2023-05-29 22:21:06,052 DEBUG Removing 'python-minimal' (python-is-python2 is being installed on the system)
2023-05-29 22:21:06,080 INFO failed to remove python-minimal
2023-05-29 22:21:06,081 INFO checking for python-dev (auto_inst=False)
2023-05-29 22:21:06,081 INFO checking for libpython-dev (auto_inst=False)
2023-05-29 22:21:06,081 INFO checking for libpython-stdlib (auto_inst=False)
2023-05-29 22:21:06,081 INFO removing libpython-stdlib because None is being installed
2023-05-29 22:21:06,082 DEBUG Removing 'libpython-stdlib' (None is being installed on the system)
2023-05-29 22:21:06,110 INFO failed to remove libpython-stdlib
2023-05-29 22:21:06,110 INFO checking for libpython-dbg (auto_inst=False)
2023-05-29 22:21:06,111 INFO checking for python-dbg (auto_inst=True)
2023-05-29 22:21:06,111 INFO checking for python-doc (auto_inst=True)
2023-05-29 22:21:06,111 INFO checking for python-minimal (auto_inst=True)
2023-05-29 22:21:06,111 INFO installing python-is-python2 because python-minimal was installed
2023-05-29 22:21:06,111 DEBUG Installing 'python-is-python2' (python-minimal was installed on the system)
2023-05-29 22:21:06,141 INFO removing python-minimal because python-is-python2 is being installed
2023-05-29 22:21:06,141 DEBUG Removing 'python-minimal' (python-is-python2 is being installed on the system)
2023-05-29 22:21:06,141 INFO failed to remove python-minimal
2023-05-29 22:21:06,142 INFO checking for python-dev (auto_inst=True)
2023-05-29 22:21:06,142 INFO checking for libpython-dev (auto_inst=True)
2023-05-29 22:21:06,142 INFO checking for libpython-stdlib (auto_inst=True)
2023-05-29 22:21:06,142 INFO removing libpython-stdlib because None is being installed
2023-05-29 22:21:06,142 DEBUG Removing 'libpython-stdlib' (None is being installed on the system)
2023-05-29 22:21:06,142 INFO failed to remove libpython-stdlib
2023-05-29 22:21:06,142 INFO checking for libpython-dbg (auto_inst=True)
2023-05-29 22:27:33,918 ERROR Dist-upgrade failed: 'E:Error, pkgProblemResolver::Resolve generated breaks, this may be caused by held packages.'
2023-05-29 22:27:33,948 DEBUG abort called
2023-05-29 22:27:33,949 DEBUG openCache()
2023-05-29 22:27:40,599 DEBUG Comparing 4.15.0-211 with 
2023-05-29 22:27:40,602 DEBUG Comparing 4.15.0-88 with 4.15.0-211
2023-05-29 22:27:41,443 DEBUG /openCache(), new cache size 115764

Please advise!

[TheFu]

Backup everything you can't afford to lose.

Sometimes systems have so much cruft that a fresh install is required.

Your 18.04 is running the 4.15 kernel, so you haven't moved to the HWE kernel (5.4.x).

When I'm do an LTS-to-LTS upgrade, I do

1. Create a backup, if I have any concern that the automated backup from last night isn't good.
2. Move to the HWE kernel, if I'm not already there. I usually do that a few months before any planned OS release upgrade. I want to be certain the next kernel works well.
3. sudo apt update
4. sudo apt dist-upgrade
5. sudo do-release-upgrade

I only do 1 LTS-to-LTS upgrade. The next LTS is a fresh install. This cleans out cruft from all the different subsystem changes that happen over a 4 yr period.

[guiverc]

Move to the HWE kernel, if I'm not already there. I usually do that a few months before any planned OS release upgrade. I want to be certain the next kernel works well.

I'll just add to what TheFu mentioned (step 2)

I usually add the HWE stack (or if I'm already using the HWE stack; add the GA stack) so both stacks are installed, that way after the release-upgrade I'll have the HWE kernel stack from the prior LTS release, plus whatever HWE is currently using for the newer LTS I just upgraded too.

Maybe this is just my understanding of TheFu's words, but I want to know that after release-upgrade I have an older kernel still installed.

If GA + HWE was installed pre-release-upgrade, I'll have both post-release-upgrade too, thus rather than the "move" I tend to ensure both are installed. Sure they use extra space (esp. in /boot) and more packages to upgrade; but the cost I feel isn't material.

Do note: If using closed source kernel modules (esp. video kernel modules; aka nvidia) they can have rules that prevent more than a single kernel stack being installed, thus what I'm suggesting here isn't possible where using some closed-source kernel modules.

Looking up package issues is harder given bionic or 18.04 has already completed standard support (five years ending end of April 2023), thus its removed from https://packages.ubuntu.com/ which makes it harder for others to help you, I'd plan the release-upgrade during the five years of supported life next time if you're likely to need support (its now harder)

I noted many Qt4 refs; Qt4 was replaced with Qt5 back in 2012 & was finally removed from both Debian & Ubuntu in 2019 (see https://discourse.ubuntu.com/t/remov...-release/12295) so whatever you have that has need for those old may need you to look at.

[MAFoElffen]

Do note: If using closed source kernel modules (esp. video kernel modules; aka nvidia) they can have rules that prevent more than a single kernel stack being installed, thus what I'm suggesting here isn't possible where using some closed-source kernel modules.

Just a sidenote-- nVidia just released their driver code for Linux Kernel 6.4 as open source.

This should mean 'different things' by the next LTS release. (24.04)

[baps55]

Thank you @TheFu and @guiverc for the recommendations.
I will check articles about how to move to the HWE Kernel and add the GA stack.
I am not aware of all these as this is my first LTS upgrade.

[baps55]

Backup everything you can't afford to lose.

Sometimes systems have so much cruft that a fresh install is required.

Your 18.04 is running the 4.15 kernel, so you haven't moved to the HWE kernel (5.4.x).

When I'm do an LTS-to-LTS upgrade, I do

1. Create a backup, if I have any concern that the automated backup from last night isn't good.
2. Move to the HWE kernel, if I'm not already there. I usually do that a few months before any planned OS release upgrade. I want to be certain the next kernel works well.
3. sudo apt update
4. sudo apt dist-upgrade
5. sudo do-release-upgrade

I only do 1 LTS-to-LTS upgrade. The next LTS is a fresh install. This cleans out cruft from all the different subsystem changes that happen over a 4 yr period.

I found this link regarding installing HWE stack: https://wiki.ubuntu.com/Kernel/LTSEnablementStack
Should I follow the command under the section for 18.04?

[baps55]

I'll just add to what TheFu mentioned (step 2)

I usually add the HWE stack (or if I'm already using the HWE stack; add the GA stack) so both stacks are installed, that way after the release-upgrade I'll have the HWE kernel stack from the prior LTS release, plus whatever HWE is currently using for the newer LTS I just upgraded too.

Maybe this is just my understanding of TheFu's words, but I want to know that after release-upgrade I have an older kernel still installed.

If GA + HWE was installed pre-release-upgrade, I'll have both post-release-upgrade too, thus rather than the "move" I tend to ensure both are installed. Sure they use extra space (esp. in /boot) and more packages to upgrade; but the cost I feel isn't material.

Do note: If using closed source kernel modules (esp. video kernel modules; aka nvidia) they can have rules that prevent more than a single kernel stack being installed, thus what I'm suggesting here isn't possible where using some closed-source kernel modules.

Looking up package issues is harder given bionic or 18.04 has already completed standard support (five years ending end of April 2023), thus its removed from https://packages.ubuntu.com/ which makes it harder for others to help you, I'd plan the release-upgrade during the five years of supported life next time if you're likely to need support (its now harder)

I noted many Qt4 refs; Qt4 was replaced with Qt5 back in 2012 & was finally removed from both Debian & Ubuntu in 2019 (see https://discourse.ubuntu.com/t/remov...-release/12295) so whatever you have that has need for those old may need you to look at.

How do I add the GA stack? I read it was default for a Server install but mine is a Desktop. I couldn't find any document regarding GA stack installation.

[deadflowr]

How do I add the GA stack?

sudo apt install linux-generic

[baps55]

sudo apt install linux-generic

Thank you @deadflowr

[guiverc]

I'll add this, though I'd hope it's not necessary as already answered.

All details can be found in https://wiki.ubuntu.com/Kernel/LTSEnablementStack which has already been provided.

Ubuntu Server ISOs default to the GA kernel stack by default.

Ubuntu Desktop ISOs up to 18.04 (which is now EOSS) with initial media or the .1 media (eg. 18.04 & 18.04.1) install with the GA kernels tack by default, however 18.04.2 & later media default to using the HWE kernel stack by default on install. Ubuntu flavors can still use this pattern, eg. installs with a Lubuntu 22.04.1 or Xubuntu 22.04 LTS media will have your system using the GA kernel stack, however installs using Lubuntu 22.04.2 & Xubuntu 22.04.2 LTS media will use the HWE kernel stack. Ubuntu flavors can still follow the pattern of Ubuntu 18.04 LTS media & earlier (why I'm mentioning the EOSS 18.04 here).

Ubuntu Desktop ISOs starting with 20.04 all default to HWE for all.

If using the HWE kernel stack & you want to switch to GA, search the wiki for the section titled "To downgrade from HWE/OEM to GA kernel:" as all information is in that page, though because the ISO used to make your install sets the default of which kernel stack is default (its not a flag or setting, its only the packages installed), we can have different stacks installed depending on what ISO we installed with.