[Bug 1672321] [NEW] systemd renders its own debug console unusable

[Hadmut Danisch]

Public bug reported:

Hi,

I have a problem with some of my ubuntu machines, they are sometimes
stuck in a boot process, issuing "a start job is running..." in an
endless loop.

I have activated systemd's debug console (terminal 9) to find the
problem, but found the debug console as almost useless, since systemd is
blasting this messages to the debug console as well, making it
impossible to use a shell (can't read any output because of that
garbage).

I did not find a way to turn this off.

ProblemType: Bug
DistroRelease: Ubuntu 16.10
Package: systemd 231-9ubuntu3
ProcVersionSignature: Ubuntu 4.8.0-39.42-generic 4.8.17
Uname: Linux 4.8.0-39-generic x86_64
NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
ApportVersion: 2.20.3-0ubuntu8.2
Architecture: amd64
CurrentDesktop: XFCE
Date: Mon Mar 13 10:41:18 2017
InstallationDate: Installed on 2016-04-22 (324 days ago)
InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420)
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 0bda:0821 Realtek Semiconductor Corp. 
 Bus 001 Device 003: ID 046d:c31d Logitech, Inc. Media Keyboard K200
 Bus 001 Device 002: ID 046d:c05b Logitech, Inc. M-U0004 810-001317 [B110 Optical USB Mouse]
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-39-generic root=UUID=d0b47754-d5ca-49ec-8190-92a24e58e373 ro rootflags=subvol=@ nosplash noplymouth nomodeset text
SourcePackage: systemd
UpgradeStatus: Upgraded to yakkety on 2016-10-17 (147 days ago)
dmi.bios.date: 03/16/2016
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P1.50
dmi.board.name: N3150-NUC
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.50:bd03/16/2016:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnN3150-NUC:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.

** Affects: systemd (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug yakkety

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https://bugs.launchpad.net/bugs/1672321

Title:
  systemd renders its own debug console unusable

Status in systemd package in Ubuntu:
  New

Bug description:
  Hi,

  I have a problem with some of my ubuntu machines, they are sometimes
  stuck in a boot process, issuing "a start job is running..." in an
  endless loop.

  I have activated systemd's debug console (terminal 9) to find the
  problem, but found the debug console as almost useless, since systemd
  is blasting this messages to the debug console as well, making it
  impossible to use a shell (can't read any output because of that
  garbage).

  I did not find a way to turn this off.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.10
  Package: systemd 231-9ubuntu3
  ProcVersionSignature: Ubuntu 4.8.0-39.42-generic 4.8.17
  Uname: Linux 4.8.0-39-generic x86_64
  NonfreeKernelModules: zfs zunicode zcommon znvpair zavl
  ApportVersion: 2.20.3-0ubuntu8.2
  Architecture: amd64
  CurrentDesktop: XFCE
  Date: Mon Mar 13 10:41:18 2017
  InstallationDate: Installed on 2016-04-22 (324 days ago)
  InstallationMedia: Lubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420)
  Lsusb:
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
   Bus 001 Device 004: ID 0bda:0821 Realtek Semiconductor Corp. 
   Bus 001 Device 003: ID 046d:c31d Logitech, Inc. Media Keyboard K200
   Bus 001 Device 002: ID 046d:c05b Logitech, Inc. M-U0004 810-001317 [B110 Optical USB Mouse]
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.8.0-39-generic root=UUID=d0b47754-d5ca-49ec-8190-92a24e58e373 ro rootflags=subvol=@ nosplash noplymouth nomodeset text
  SourcePackage: systemd
  UpgradeStatus: Upgraded to yakkety on 2016-10-17 (147 days ago)
  dmi.bios.date: 03/16/2016
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.50
  dmi.board.name: N3150-NUC
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.50:bd03/16/2016:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnN3150-NUC:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.

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