Ubuntu 11.04 64 bit hangs at shutdown

Ubuntu 11.04 64 bit

Ubuntu 12.04 64 bit same behaviour

Problem (unsolved)

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

• doing a shutdown from the desktop will logout instead most of the times (9 out of 10) and show the login screen
• shutting down does not complete, sometimes a trace shows up that mentions FGLRX (ATI proprietary video driver), it does not timeout, it keeps hanging indefinitely
• seems to be happening more often when a truecrypt partition is mounted
  • https://wiki.archlinux.org/index.php/TrueCrypt#Safely_unmount_and_unmap_volumes_.28on_shutdown.29

Suggestions and reports:

• (20120619) http://forum.ubuntu-nl.org/installatie/pc-sluit-meestal-niet-af-!/
• (20121107) http://forums.linuxmint.com/viewtopic.php?f=90&t=101548&p=577156&hilit=mint+black+screen
• http://www.brighthub.com/computing/linux/articles/39504.aspx
  • ACPI (Advanced Configuration and Power Interface)
• https://bugs.launchpad.net/ubuntu/+source/samba/+bug/211631
• https://bugs.launchpad.net/ubuntu/+source/linux/+bug/577897 (expired)
  • seems ACPI related, "with the latest kernel (2.6.34-999-generic #201005121008), it works"
• https://bugs.launchpad.net/ubuntu/+bug/613897
  • "I finally managed to fix the problem by removing the acpi=off from my grub kernel options... I had a look at '/etc/init.d/halt' script, I noticed that in case of shutdown, it called the /etc/init.d/ups-monitor which was not installed..."
• https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/126140 (2007)
  • "created an init.d script to run at shutdown. All the script does is remove the snd_hda_intel module at shutdown (rmmod snd-hda-intel) and things work smoothly. See this thread for more detail: http://ubuntuforums.org/showthread.php?t=500268 "

Suggestions

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

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"

Pre-stop 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