help:cannot poweroff

i cannot poweroff from fedora7
when i select system>shutdown
the screen gets distored like
half of the screen with wallpaper
and half with distored colors etc
i wait for 5 minutes but screen remains
like that didnt shutdown

i install ati driver, it installed
succesfully and also i changed the
default runlevel in inittab from 3 to 5.

Help me

M

Try this and report what happens
1) Open a terminal
2) Type su
3) Type root password
4) Type shutdown -h now
Does it power off the PC?

Also try init 5.

mehulved said:
Try this and report what happens
1) Open a terminal
2) Type su
3) Type root password
4) Type shutdown -h now
Does it power off the PC?

i get error that there is no command shutdown -h

M

Are you sure you were logged in as root after typing 'su' ?
Also try

Code:

whereis shutdown

Did you upgrade system? Remove some software right before this started?

What bt restart?

F

Dont know about fedora but in Ubuntu you have to issue a time like shutdown -h 1 for this to work. Otherwise it will give you the following error

Code:

biju@Venom:~$ shutdown -h
shutdown: time expected
Try `shutdown --help' for more information.
biju@Venom:~$

@OP: "shutdown -h 00"
or "shutdown 00"

and in grub,in the line starting with kernel,u add

Code:

noapm noacpi nolapic

such that ur /boot/grub/grub.conf looks as below:

Code:

title fedora 
kernel /boot/vmlinuz-xxx ....... [B]noapm noacpi nolapic[/B]
initrd /boot/initrd-xxx.img ....

u can use gedit editor as root to edit /boot/grub/grub.conf
u can invoke
in press ALT+F2,
run,

Code:

gksu -u root gedit /boot/grub/grub.conf

do what Prakash says & try
poweroff,reboot & halt

Function are same as there names.
btw check if

i think halt sud work it out...
btw hav u tried the above commands?
and wat was the output?