my computer dose not shutdown with out hanging up

I don't know what i did or what happened?

but my ubuntu logs off on clicking shutdown...

running the shutdown or reboot command too doesn't shutdown....

how can i find the log?

all i know is there is a message saying ....

Power_table_CMD wait for 500 sec

and something similar

it gets stuck on Ubuntu Plymouth...

I have to long press the power button on my Laptop to shut it off

My workstation at work is running 11.10 (lightdm). Shutting down or restarting has always worked up till last week.

My workstation is generally left on through the week and shutdown at weekends.

When I click either Restart or Shutdown, it just logs me out.

Is there any logs I can see that will point to errors?

What might cause this? I haven't got auto login checked (as one answer suggested).

As the title says: when I click Shutdown from the menu it logs off. When I click shutdown from the log-in menu it does nothing. I'm using a fresh install of Ubuntu 11.10. I can force it to shutdown by the command below, but I don't want to keep typing that whenever I want to shutdown my laptop.

sudo shutdown -h now

So it's probably processes which arn't closing.

My workstation at work is running 11.10 (lighdm). Shutting down or restarting has always worked up till last week.

My workstation is generally left on through the week and shutdown at weekends.

When I click either Restart or Shutdown, it just logs me out.

Is there any logs I can see that will point to errors?

What might cause this? I haven't got auto login checked (as one answer suggested).

I am unable to shutdown. Whenever I try to shutdown, it reboots. I am running Ubuntu 12.10.

Hi, I've just installed Ubuntu 11.10 on a fairly old computer (1gb RAM, Intel Pentium Dual Core, Intel 946GZ on-board graphics). Running unity 2d is fairly snappy, but graphics seem slow in certain circumstances:

1. Certain games (hedgewars), FPS of only about 30 2.

I am using a Linux system. I generally prefer to use the command line to shutdown my system. Every time I shutdown the system it displays logs. Can somebody help me to disable those logs? I wish to have nothing displayed on the screen at shutdown.

Hi and thanks for your help.

I am running Ubuntu 12.04 (64bit) on my MacBook Pro 15" (2010) and i would like to use the integrated intel graphics instead of the dedicated nvidia graphics Ubuntu boots with on this machine.

I am booting with UEFI, not REFIT or similar.

I am running Windows 7 OS and Ubuntu OS on the same machine my machine have the following specifications:

Processor : Intel core i5 2.4 ghz RAM : 4 GB Machine : HP Pavillion g6

I have made a separate partition for both the Operating system and both operating systems are running all the applications normally.