Removing amdgpu-pro by running "amdgpu-pro-uninstall" from ubuntu recovery mode solved this problem for me.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1762127 Title: Ubuntu stuck in loop at boot after upgrade from 17.10 to 18.04 Status in xdiagnose package in Ubuntu: New Status in xorg package in Ubuntu: New Bug description: * I did a do-release-upgrade -d * After the upgrade was done, I rebooted Result: My computer was stuck in a boot loop, showing alternatively a black screen, a text log and a set of random pixels. Here is a GIF of the loop: https://imgur.com/zGGTzma As I had to make my computer work again I had to reinstal Ubuntu from a 18.04 live USB stick, so I'm not sure if I could get information from the previous installation. Reinstalling made my computer work fine with 18.04. I just need to reinstall all my applications. I had an external Mesa installation on 17.10 from Padoka Stable PPA. May it be related? At the moment, Mesa version from Padoka Stable is 18.0.0~*~padoka0, whereas after a 18.04 reinstall it is 18.0.0-rc5 Note: I tried to boot in safe mode with graphics, but it does not start, I get this error in the console: /usr/share/xdiagnose/failsafeXinit: line 194 : [: == : unary operator expected ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: ubuntu-release-upgrader-core 1:18.04.13 ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10 Uname: Linux 4.15.0-13-generic x86_64 ApportVersion: 2.20.9-0ubuntu4 Architecture: amd64 CrashDB: ubuntu CurrentDesktop: ubuntu:GNOME Date: Sun Apr 8 08:56:54 2018 InstallationDate: Installed on 2018-04-07 (0 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180403) PackageArchitecture: all ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=fr_FR.UTF-8 SHELL=/bin/bash SourcePackage: ubuntu-release-upgrader Symptom: release-upgrade UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xdiagnose/+bug/1762127/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
