[Bug 880240] Re: system doesn't turn off if "sudo halt" is given

[Michael Paoli]

# shutdown -h -P now
executed as root from serial console
as described on Bug #958838 (which may or may not be same bug - has been merged with this one in any case)
results in system hung / locked up (imperfectly halted?), but not powered down, whereas same/equivalent works fine with 10.04 LTS,
I retested this on both the released production 12.04 LTS and 11.10:
Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
from the CD ISOs, and the results on both of those are nearly identical, about the only noteworthy difference seen,
is in the case of  Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423), some additional output/diagnostics
are seen on the console just after the output of:
umount: /run/lock: not mounted
but before the system freezes (kernel panic?) which are seen on 12.04 LTS but not seen with 11.10:
[  576.022406] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6
[  576.022943] ata2.00: cmd a0/00:00:00:08:00/00:00:00:00:00/a0 tag 0 pio 16392 in
[  576.022944]          res 01/60:00:00:08:00/00:00:00:00:00/a0 Emask 0x3 (HSM violation)
[  576.024203] ata2.00: status: { ERR }
In either case, both are quite stuck at that point, and system requires physical reset or power off to continue, and that issue does not exist in 10.04 LTS.

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to upstart in Ubuntu.
https://bugs.launchpad.net/bugs/880240

Title:
  system doesn't turn off if "sudo halt" is given

Status in “upstart” package in Ubuntu:
  Confirmed

Bug description:
  Since I upgraded from 11.04 to 11.10 the system doesn't turn off at
  the end of halt procedure if it's called via commandline (local or
  remote shell) . At some point of halt procedure the system freezes and
  all I can do is turning off pc via physical power button and halting
  it using GUI or via "sudo shutdown -h now" , these two methods work
  flawlessly.

   I have this problem on both x86_64 and x86. Anyway if I shut down the
  pc using ligthdm or unity the system is turned off properly.

  Description:	Ubuntu 11.10
  Release:	11.10
  Linux travelmate 3.0.0-13-generic #21-Ubuntu SMP Mon Oct 17 20:18:09 UTC 2011 i686 i686 i386 GNU/Linux

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/upstart/+bug/880240/+subscriptions