Booting randomly fails at black screen

[Michael J Gray]

Problem appears related to Bug #1369216

Successful boot always comes by using recovery mode

gpu-manager problem report

● gpu-manager.service - Detect the available GPUs and deal with any system changes
   Loaded: loaded (/lib/systemd/system/gpu-manager.service; enabled; vendor preset: enabled)
   Active: inactive (dead) since Wed 2016-08-24 12:02:47 BST; 19min ago
  Process: 2601 ExecStart=/usr/bin/gpu-manager --log /var/log/gpu-manager.log (code=exited, status=0/SUCCESS)
 Main PID: 2601 (code=exited, status=0/SUCCESS)

Aug 24 12:02:48 bigasus gpu-manager[2601]: /etc/modprobe.d is not a file
Aug 24 12:02:48 bigasus gpu-manager[2601]: /etc/modprobe.d is not a file
Aug 24 12:02:48 bigasus gpu-manager[2601]: /etc/modprobe.d is not a file
Aug 24 12:02:48 bigasus gpu-manager[2601]: /etc/modprobe.d is not a file
Aug 24 12:02:48 bigasus gpu-manager[2601]: /etc/modprobe.d is not a file
Aug 24 12:02:48 bigasus gpu-manager[2601]: Error: can't open /lib/modules/4.4.0-34-generic/updates/dkms
Aug 24 12:02:48 bigasus gpu-manager[2601]: Error: can't open /lib/modules/4.4.0-34-generic/updates/dkms
Aug 24 12:02:48 bigasus gpu-manager[2601]: update-alternatives: error: no alternatives for x86_64-linux-gnu_gfxcore_conf
Aug 24 12:02:46 bigasus systemd[1]: Starting Detect the available GPUs and deal with any system changes...
Aug 24 12:02:47 bigasus systemd[1]: Started Detect the available GPUs and deal with any system changes.

System info from journal of boot

kernel: Linux version 4.4.0-34-generic (buildd@lgw01-20) (gcc version 5.3.1 20160413 (Ubuntu 5.3.1-14ubuntu2.1) ) #53-Ubuntu SMP Wed Jul 27 16:06:39 UTC 2016 (Ubuntu 4.4.0-34.53-generic 4.4.15)
Aug 24 12:02:16 bigasus kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-34-generic root=UUID=ed792125-175f-4f33-b6f7-0170e63f5ff4 ro recovery nomodeset
Aug 24 12:02:16 bigasus kernel: KERNEL supported cpus:
Aug 24 12:02:16 bigasus kernel: Intel GenuineIntel
Aug 24 12:02:16 bigasus kernel: AMD AuthenticAMD
Aug 24 12:02:16 bigasus kernel: Centaur CentaurHauls

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: xorg 1:7.7+13ubuntu3
ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
Uname: Linux 4.4.0-34-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: KDE
Date: Wed Aug 24 12:32:23 2016
InstallationDate: Installed on 2016-06-11 (74 days ago)
InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
SourcePackage: xorg
Symptom: display
UpgradeStatus: No upgrade log present (probably fresh install)

[penalvch (penalvch)]

Michael J Gray, thank you for reporting this and helping make Ubuntu better.

Could you please run the following command once from a terminal by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information:
apport-collect -p xorg 1616447

When reporting xorg related bugs in the future, please do so via the above method. You can learn more about this functionality at https://wiki.ubuntu.com/ReportingBugs.

[Michael J Gray (ubmike)]

Hello,
I installed package xdiagnose but your command fails when run following
a reboot after an update (so no package upgrade would be in progress)

michael@bigasus:~/Documents$ apport-collect -p xorg 1616447
ERROR: Could not import module, is a package upgrade in progress?
Error: No module named PyQt5.QtCore

Thank you
Mike Gray

On 01/09/16 08:36, Christopher M. Penalver wrote:
> Michael J Gray, thank you for reporting this and helping make Ubuntu
> better.
>
> Could you please run the following command once from a terminal by ensuring you have the package xdiagnose installed, and that you click the Yes button for attaching additional debugging information:
> apport-collect -p xorg 1616447
>
> When reporting xorg related bugs in the future, please do so via the
> above method. You can learn more about this functionality at
> https://wiki.ubuntu.com/ReportingBugs.
>
> ** Changed in: xorg (Ubuntu)
> Importance: Undecided => Low
>
> ** Changed in: xorg (Ubuntu)
> Status: New => Incomplete
>

[penalvch (penalvch)]

Michael J Gray, one may run the command in a non-KDE environment via http://cdimage.ubuntu.com/daily-live/current/ .

[Launchpad Janitor (janitor)]

[Expired for xorg (Ubuntu) because there has been no activity for 60 days.]