Public bug reported:
Updating to linux-image-4.15.0-34-generic broke X at start-up.
[ 157.020] (II) systemd-logind: logind integration requires -keeptty and
-keeptty was not provided, disabling logind integration
[ 157.021] (II) xfree86: Adding drm device (/dev/dri/card0)
[ 157.021] (EE) /dev/dri/card0: failed to set DRM interface version 1.4:
Permission denied
[ 157.035] (EE) Screen 0 deleted because of no matching config section.
[ 157.035] (II) UnloadModule: "modesetting"
[ 157.035] (EE)
Fatal server error:
[ 157.035] (EE) Cannot run in framebuffer mode. Please specify busIDs
for all framebuffer devices
[ 157.035] (EE)
[ 157.035] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 157.035] (EE) Please also check the log file at "/var/log/Xorg.0.log" for
additional information.
[ 157.035] (EE)
[ 157.059] (EE) Server terminated with error (1). Closing log file.
Reverting back to linux-image-4.15.0-33-generic fixed it.
By the way, the failsafe X did not offer this option and nothing offered
worked for me. This felt like being back in the 90s...
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.15.0-34-generic 4.15.0-34.37~16.04.1
ProcVersionSignature: Ubuntu 4.15.0-33.36~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-33-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
Date: Wed Sep 12 20:28:27 2018
InstallationDate: Installed on 2018-04-20 (145 days ago)
InstallationMedia: Ubuntu 16.04.3 LTS "Xenial Xerus" - Release amd64 (20170801)
SourcePackage: linux-signed-hwe
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: linux-signed-hwe (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
** Attachment added: "Xorg.log"
https://bugs.launchpad.net/bugs/1792213/+attachment/5188093/+files/Xorg.0.log.old
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https://bugs.launchpad.net/bugs/1792213
Title:
kernel update breaks X server: /dev/dri/card0: failed to set DRM
interface version 1.4: Permission denied
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