[Bug 560175] Re: switching from runlevel 5 to runlevel 1 locks up system

[Bruno Nova]

I also discovered this issue (or something similar) in Ubuntu 14.04.
This is an old bug, but I will comment here instead of reporting a new bug.

When I run "sudo shutdown now" or "sudo telinit 1" to go to single-user mode, the Plymouth splashscreen appears briefly, but then a black screen appears with no text (there should be a root console there).
The root console is there however, but invisible, because typing "telinit 2" blindly and then pressing <Enter> returns the system to the normal mode.

If I disable the splashscreen (by removing the "splash" kernel parameter from the GRUB menu), switching to single-user mode works correctly. So, this is definitely a bug in Plymouth!
I can't reproduce this bug is an VirtualBox VM, however (maybe Plymouth doesn't work correctly there).
I must say that I'm using a laptop with Optimus graphics (using bumblebee). Don't know if that could have anything to do with this bug.

Booting into recovery mode works fine.

Another problem: switching to single-user mode kills all the consoles
(tty1-tty6), but returning to normal mode doesn't restart them (lightdm
is restarted correctly). I think this could be a very big problem on a
server.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to plymouth in Ubuntu.
https://bugs.launchpad.net/bugs/560175

Title:
  switching from runlevel 5 to runlevel 1 locks up system

Status in plymouth package in Ubuntu:
  Triaged

Bug description:
  Binary package hint: plymouth

  (the system was freshly installed as 10.4-beta1 and upgraded today)

  steps to reproduce:
  - boot the system normally
  - either: log in graphically and open a console window
  - or: switch to vt1 and log into the console
  - issue the command: telinit 1

  Processes will be stopped and so on, but the procedure ends in a state where
  - the ubuntu splash screen is shown
  - no reaction to pressing ctrl-alt-f1
  - system has to be restarted with ctrl-alt-del

  ProblemType: Bug
  DistroRelease: Ubuntu 10.04
  Package: plymouth 0.8.1-4ubuntu1
  ProcVersionSignature: Ubuntu 2.6.32-19.28-generic 2.6.32.10+drm33.1
  Uname: Linux 2.6.32-19-generic i686
  Architecture: i386
  Date: Sat Apr 10 19:54:56 2010
  DefaultPlymouth: /lib/plymouth/themes/ubuntu-logo/ubuntu-logo.plymouth
  InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Beta i386 (20100318)
  MachineType: Gigabyte Technology Co., Ltd. EP35-DS3
  ProcCmdLine: root=/dev/sda2 ro quiet splash
  ProcEnviron:
   LANG=de_DE.utf8
   SHELL=/bin/bash
  ProcFB: 0 radeondrmfb
  SourcePackage: plymouth
  TextPlymouth: /lib/plymouth/themes/ubuntu-text/ubuntu-text.plymouth
  dmi.bios.date: 06/19/2009
  dmi.bios.vendor: Award Software International, Inc.
  dmi.bios.version: F4
  dmi.board.name: EP35-DS3
  dmi.board.vendor: Gigabyte Technology Co., Ltd.
  dmi.board.version: x.x
  dmi.chassis.type: 3
  dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
  dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF4:bd06/19/2009:svnGigabyteTechnologyCo.,Ltd.:pnEP35-DS3:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnEP35-DS3:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
  dmi.product.name: EP35-DS3
  dmi.sys.vendor: Gigabyte Technology Co., Ltd.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/plymouth/+bug/560175/+subscriptions