Ubuntu 11.04 64 bit hangs at shutdown: Difference between revisions

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* /etc/init.d
* /etc/init.d


Scripts for the different run-levels are normally links to the scripts in /etc/init.d. They are located here:
Scripts for the different run-levels should 'link' to the scripts in /etc/init.d. They are located here:
* /etc/rc0.d - shutdown,halt
* /etc/rc0.d - ''shutdown,halt''
* /etc/rc1.d - single user
* /etc/rc1.d - ''single user''
* /etc/rc2|3|4|5.d - full, multi-user (default)
* /etc/rc2|3|4|5.d - ''full, multi-user (default)''
* /etc/rc6.d - reboot
* /etc/rc6.d - ''reboot''
* /etc/rcS.d
 
Scripts are alphabetically executed when changing to a new run-level and are named as follows:
* [K | S] + nn + [string]
 
Where S~ with a parameter 'start' and K~ is run with a parameter 'stop'.
 
For example:
* K99_umountUSB.sh


== Analyse sendsigs to find hangup point ==
== Analyse sendsigs to find hangup point ==

Latest revision as of 07:25, 5 July 2013

Ubuntu 11.04 64 bit

Ubuntu 12.04 64 bit (LTS) Intel® Core™ i5 CPU 650 @ 3.20GHz × 4

Boot and shutdown sequence

About runlevels:

Run-level scripts are located here:

  • /etc/init.d

Scripts for the different run-levels should 'link' to the scripts in /etc/init.d. They are located here:

  • /etc/rc0.d - shutdown,halt
  • /etc/rc1.d - single user
  • /etc/rc2|3|4|5.d - full, multi-user (default)
  • /etc/rc6.d - reboot

Scripts are alphabetically executed when changing to a new run-level and are named as follows:

  • [K | S] + nn + [string]

Where S~ with a parameter 'start' and K~ is run with a parameter 'stop'.

For example:

  • K99_umountUSB.sh

Analyse sendsigs to find hangup point

The 'sendsigs' script will send the kill signal (-15) to all remaining processes. Processes have up to 5 minutes to close before they are forced to end (-9).

NB: Be very careful editing the file sendsigs. 

#backup
sudo cp /etc/init.d/sendsigs /etc/init.d/sendsigs~
#edit
sudo gedit /etc/init.d/sendsigs

Modify grub configuration to show log messages

sudo gedit /etc/default/grub

Change: 

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to: 

GRUB_CMDLINE_LINUX_DEFAULT=""
sudo update-grub

Unmount TrueCrypt volumes at reboot and shutdown

About run levels: 

sudo gedit /etc/init.d/umounttruecrypt.sh
#!/bin/sh
. /lib/lsb/init-functions
RET=1
if [ -f /usr/bin/truecrypt ] ; then
  log_daemon_msg "Stopping" "TrueCrypt"
  /usr/bin/truecrypt -d
  RET=$?
else
  log_failure_msg "TrueCrypt not found"
fi
log_end_msg $RET
exit $RET
#make executable:
sudo chmod +x /etc/init.d/umounttruecrypt.sh

#execute at reboot:
sudo ln -s /etc/init.d/umounttruecrypt.sh /etc/rc0.d/K99umounttruecrypt.sh

#execute at shutdown:
sudo ln -s /etc/init.d/umounttruecrypt.sh /etc/rc6.d/K99umounttruecrypt.sh

Archive

Modem-manager fails to shutdown signal 15 (failed)

Change the shutdown sequence to fix this: 

sudo mv /etc/rc0.d/S31umountnfs.sh /etc/rc0.d/S05umountnfs.sh
sudo mv /etc/rc6.d/S31umountnfs.sh /etc/rc6.d/S05umountnfs.sh
sudo mv /etc/rc0.d/S35networking /etc/rc0.d/S15networking
sudo mv /etc/rc6.d/S35networking /etc/rc6.d/S15networking

ACPI off (failed)

Modify grub configuration as above to turn off ACPI (Advanced Configuration and Power Interface) at boot. 

GRUB_CMDLINE_LINUX_DEFAULT="acpi=off"

shutdown umount script (failed)

Add the pre-stop script to /etc/init/dbus.conf before 'exec' 

sudo gedit /etc/init/dbus.conf
pre-stop script
   trap "TERM signal" TERM
   /bin/umount -a -t cifs -f -l
   trap - TERM
end script

Update ATI driver (failed)

For ATI Radeon HD 5700 Series, go to www.ati.com to download latest. 

sudo sh ./ati-driver-installer-11-6-x86.x86_64.run --buildpkg Ubuntu/natty
sudo dpkg -i fglrx*.deb

Notes

At shutdown or restart the computer may or may not hang.

Suggestions and reports:

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