Whenever I go to reboot, my monitor instantly shuts off, and the computer hangs without rebooting. I have Ubuntu 6.10 installed as well and it does not do this. I have to press the restart button to manually restart from Kubuntu. Any ideas why it does this?

It's a bug with acpi. It'll get fixed eventually (hopefully lol), but for now you can add the cheat code acpi=force to the grub kernel line. I had to do this in order to get an old machine to shutdown properly.

redeye, i'm having the shutdown problem on xubuntu, too.

how do i get to the "grub kernal line" in order to add the cheat code?

tia...

Run the following to open the file with read/write permissions: gksudo gedit /boot/grub/menu.lst
Look for the kernel you're running. Mine looks something like this (on Dapper):

title Ubuntu, kernel 2.6.15-27-k7
root (hd0,4)
kernel /boot/vmlinuz-2.6.15-27-k7 root=/dev/hda5 ro quiet splash
initrd /boot/initrd.img-2.6.15-27-k7
savedefault
boot

Add acpi=force to the kernel line, so it looks like this:
kernel /boot/vmlinuz-2.6.15-27-k7 root=/dev/hda5 ro quiet splash acpi=force

That's it! Each time you boot that kernel, the flag will be passed to it and hopefully, it'll work as a temporary fix.

Thanks very much Redeye2! I had the problem with my Kubuntu 6.10 not shutting down and just hanging in limbo. Yours was the only fix I found that worked! Thanks again.

Woot satisfied customer haha

Well I didn't say anything before BUT ....


it didn't work for me :-(

I ended up re-installing Kubuntu, and it seems fine now ... never did figure out the problem with mine. Thanks for the reply, though!

Thanks Redeye2, My wife, a Linux newbie like myself, gave me a "honey-do" this morning to find out why her laptop, with a fresh install of SuSE 10.1, would not shut down. We followed your detailed instructions (thanks for details) and her machine shuts down now. It does ask for root password now before shutting down, but that's okay, no big deal.

Hmm wonder why it asks for a root password... but good to know this mini guide helped some hehe

You could use "sudo poweroff" at the prompt to do a shutdown.

@bioalchemist

have tried to look at this thread?

It sometimes work...

[edit] I now realizes you reinstalled ubuntu and fixed your problem that way, sorry for not having read your post carefully