Re: Reboot instead of shutdown
Please provide following info:
1. Is this your first experience with Ubuntu? If not, did it happen with previous versions?
2. Was behaviour okay prior to some update, or has this been the behaviour from the start?
3. Did you change any settings? eg. configuration files? If so, what did you change?
4. Do you have external devices attached to your laptop? eg. USB drive? Name all.
5. Are you running 32-bit or 64-bit? Please post back output ofGoogle shows that there can be any one of half a dozen reasons for this behaviour. You may wish to start with the least disruptive options first:
1. Install laptop-mode-tools which may install enough laptop config settings to allow Ubuntu to poweroff elegantly. After install, choose laptop mode.
2. If above doesn't solve your problem and you don't need the wake-on-lan feature, then go into BIOS and turn this feature off.
sudo apt-get update && sudo apt-get install laptop-mode-tools
3. Set ACPI to not route IRQs. A captured IRQ that the kernel doesn't release could cause BIOS to always cycle rather than power off. Using either "sudo nano" or "gksudo gedit", add "acpi=noirq" to GRUB as follows:
Find the line starting GRUB_CMDLINE_LINUX_DEFAULT and add acpi=noirq to the end between the quote marks so that it resembles
gksudo gedit /etc/default/grub
This change cannot take effect until after at least one full reboot cycle, so don't expect it to power off your machine the first time. If problem remains, then reverse procedure and take out the change. No point in diminishing functionality if it doesn't do anything.
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=noirq"
There have been reports in other distro forums of the 3.11 kernel being wonky with shutdowns. Version 13.10 is relatively new, so it's not surprising to hear that bugs are still cropping up. If so, then no solution may exist until it's fixed in a future update.
Newb: How far must I jump to clear the ledge halfway down?
Guru: It's bad to jump off cliffs. Let's look at better options.
Newb: Stop harping about "best practices" and just tell me.