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[RichardNeill <ubuntu@xxxxxxxxxxxxxxxx>]

Public bug reported:

I just installed fglrx  (2:13.350.1-0ubuntu3)  on Utopic.
It causes a CPU hang (see Bug 1338177), so I wanted to remove it.

Running: 
  sudo apt-get purge fglrx fglrx-amdcccle 
silently hangs, indefinitely.  The prompt just never returns (not even with Ctrl-C).

I tracked the bug down to this script:
/var/lib/dpkg/info/fglrx.postrm  
whose process I was able to kill, and dpkg then continued (to a non-graceful exit);

--
Purging configuration files for fglrx (2:13.350.1-0ubuntu3) ...
dpkg: error processing package fglrx (--purge):
 subprocess installed post-removal script was killed by signal (Terminated)
Errors were encountered while processing:
 fglrx
E: Sub-process /usr/bin/dpkg returned an error code (1)
---

The offending line in the postrm script is this one:
update-rc.d atieventsd remove >/dev/null

Having commented it out, I was then able to re-run the 
sudo apt-get purge fglrx fglrx-amdcccle
successfully.


The root cause seems to be that the command:
  /usr/lib/insserv/insserv
will sit there interminably, inactively, and unkillably.
even sudo killall -9 insserv   won't stop it.

To fully recover from the insserv hang, I had to shut down the machine, with shutdown -h now, 
and even that didn't fully go down; I had to eventually physically reset the box.


There are really 3 bugs here:

1. The fglrx package cannot be gracefully uninstalled.
2. insserv needs to be killed with fire.
3. the kernel's reboot or shutdown commands fail if a process like insserv is stuck in the "D" state.

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

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https://bugs.launchpad.net/bugs/1338603

Title:
  fglrx deb postrm script hangs indefinitely

Status in “linux” package in Ubuntu:
  New

Bug description:
  I just installed fglrx  (2:13.350.1-0ubuntu3)  on Utopic.
  It causes a CPU hang (see Bug 1338177), so I wanted to remove it.

  Running: 
    sudo apt-get purge fglrx fglrx-amdcccle 
  silently hangs, indefinitely.  The prompt just never returns (not even with Ctrl-C).

  I tracked the bug down to this script:
  /var/lib/dpkg/info/fglrx.postrm  
  whose process I was able to kill, and dpkg then continued (to a non-graceful exit);

  --
  Purging configuration files for fglrx (2:13.350.1-0ubuntu3) ...
  dpkg: error processing package fglrx (--purge):
   subprocess installed post-removal script was killed by signal (Terminated)
  Errors were encountered while processing:
   fglrx
  E: Sub-process /usr/bin/dpkg returned an error code (1)
  ---

  The offending line in the postrm script is this one:
  update-rc.d atieventsd remove >/dev/null

  Having commented it out, I was then able to re-run the 
  sudo apt-get purge fglrx fglrx-amdcccle
  successfully.

  
  The root cause seems to be that the command:
    /usr/lib/insserv/insserv
  will sit there interminably, inactively, and unkillably.
  even sudo killall -9 insserv   won't stop it.

  To fully recover from the insserv hang, I had to shut down the machine, with shutdown -h now, 
  and even that didn't fully go down; I had to eventually physically reset the box.

  
  There are really 3 bugs here:

  1. The fglrx package cannot be gracefully uninstalled.
  2. insserv needs to be killed with fire.
  3. the kernel's reboot or shutdown commands fail if a process like insserv is stuck in the "D" state.

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