impossible upgrade

[Max luigi]

Channel closing: too late to send/recv, messages will be lost
ubuntu-bug ubuntu-release-upgrader-core
comm: /var/log/dmesg: File o directory non esistente

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: ubuntu-release-upgrader-core 1:18.04.41
ProcVersionSignature: Ubuntu 4.15.0-124.127-generic 4.15.18
Uname: Linux 4.15.0-124-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.20
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: ubuntu:GNOME
Date: Fri Nov 20 22:06:40 2020
InstallationDate: Installed on 2020-05-30 (174 days ago)
InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 (20180725)
PackageArchitecture: all
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=it_IT.UTF-8
 SHELL=/bin/bash
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to bionic on 2020-11-20 (0 days ago)
VarLogDistupgradeTermlog:

[Max luigi (supermax05)]

020-11-20 21:48:51,294 INFO Using config files '['./DistUpgrade.cfg.bionic']'
2020-11-20 21:48:51,294 INFO uname information: 'Linux maximus01-Sys 4.15.0-124-generic #127-Ubuntu SMP Fri Nov 6 10:54:43 UTC 2020 x86_64'
2020-11-20 21:48:51,724 INFO apt version: '1.6.12ubuntu0.1'
2020-11-20 21:48:51,724 INFO python version: '3.6.9 (default, Oct 8 2020, 12:12:24)
[GCC 8.4.0]'
2020-11-20 21:48:51,727 INFO release-upgrader version '20.04.28' started
2020-11-20 21:48:51,775 INFO locale: 'it_IT' 'UTF-8'
2020-11-20 21:48:51,953 DEBUG Using 'DistUpgradeViewGtk3' view
2020-11-20 21:48:51,999 DEBUG enable dpkg --force-overwrite
2020-11-20 21:48:52,021 DEBUG creating statefile: '/var/log/dist-upgrade/apt-clone_system_state.tar.gz'
2020-11-20 21:48:55,671 DEBUG lsb-release: 'bionic'
2020-11-20 21:48:55,672 DEBUG _pythonSymlinkCheck run
2020-11-20 21:48:55,673 DEBUG openCache()
2020-11-20 21:48:55,674 DEBUG quirks: running PreCacheOpen
2020-11-20 21:48:55,674 DEBUG running Quirks.PreCacheOpen
2020-11-20 21:48:56,763 DEBUG Comparing 4.15.0-124 with
2020-11-20 21:48:56,764 DEBUG Comparing 4.15.0-125 with 4.15.0-124
2020-11-20 21:48:57,018 DEBUG /openCache(), new cache size 101081
2020-11-20 21:48:57,018 DEBUG need_server_mode(): run in 'desktop' mode, (because of pkg 'ubuntu-desktop')
2020-11-20 21:48:57,018 DEBUG checkViewDepends()
2020-11-20 21:48:57,022 DEBUG running doUpdate() (showErrors=False)
2020-11-20 21:49:00,035 DEBUG openCache()
2020-11-20 21:49:01,130 DEBUG Comparing 4.15.0-124 with
2020-11-20 21:49:01,130 DEBUG Comparing 4.15.0-125 with 4.15.0-124
2020-11-20 21:49:01,389 DEBUG /openCache(), new cache size 101081
2020-11-20 21:49:01,389 DEBUG doPostInitialUpdate
2020-11-20 21:49:01,390 DEBUG quirks: running focalPostInitialUpdate
2020-11-20 21:49:01,390 DEBUG running Quirks.focalPostInitialUpdate
2020-11-20 21:49:03,501 DEBUG Snap core18 is installed
2020-11-20 21:49:03,726 DEBUG Snap gnome-3-34-1804 is installed
2020-11-20 21:49:03,727 DEBUG Snap gnome-3-34-1804 is not tracking the release channel
2020-11-20 21:49:03,892 DEBUG Snap gtk-common-themes is installed
2020-11-20 21:49:04,387 DEBUG Snap gnome-3-28-1804 is installed
2020-11-20 21:49:04,387 DEBUG Snap gnome-3-28-1804 is not tracking the release channel
2020-11-20 21:49:04,542 DEBUG Snap gnome-calculator is installed
2020-11-20 21:49:04,857 DEBUG Snap gnome-characters is installed
2020-11-20 21:49:05,189 DEBUG Snap gnome-logs is installed
2020-11-20 21:49:07,479 DEBUG MetaPkgs: ubuntu-desktop
2020-11-20 21:49:10,787 DEBUG Foreign:
2020-11-20 21:49:10,787 DEBUG Obsolete: amdgpu amdgpu-core amdgpu-dkms amdgpu-dkms-firmware amdgpu-lib amdgpu-lib32 amdgpu-pro amdgpu-pro-core amdgpu-pro-lib32 amdgpu-pro-pin cin epson-inkjet-printer-escpr glamor-amdgpu gst-omx-amdgpu libdrm-amdgpu-amdgpu1 libdrm-amdgpu-amdgpu1:i386 libdrm-amdgpu-common libdrm-amdgpu-radeon1 libdrm-amdgpu-radeon1:i386 libdrm2-amdgpu libdrm2-amdgpu:i386 libegl1-amdgpu-mesa libegl1-amdgpu-mesa-drivers libegl1-amdgpu-mesa-drivers:i386 libegl1-amdgpu-mesa:i386 libegl1-amdgpu-pro libegl1-amdgpu-pro:i386 libgbm1-amdgpu libgbm1-amdgpu:i386 libgl1-amdgpu-mesa-dri libgl1-amdgpu-mesa-dri:i386 libgl1-amdgpu-mesa-glx libgl1-amdgpu-mesa...

[Daniel Letzeisen (dtl131)]

You have oibaf PPA still enabled. You need to run ppa-purge on that (and any other PPA you have enabled).

[Brian Murray (brian-murray)]

Reviewing the files from your upgrade attempt you seem to have enabled a PPA that provides Xorg packages. This will prevent the upgrade as that PPA contains package version numbers greater than the release to which you are upgrading. You can revert the PPA by installing the ppa-purge package from the official Ubuntu archive and then running 'sudo ppa-purge ppa:oibaf/graphics-drivers'. After that you can try upgrading again and if it still fails open a new bug report. Thanks and good luck!