Computer wont shutdown sometimes

[eddietours]

sometime l would shutdown the computer but it wont turn off it stays pitch black with a dash on the left top part of the monitor
in order to turn off l need to force the computer any help with this would be really appreciated

[tessk]

When it's black, what happens if you press ctrl-alt-del ?

I've had the same thing happen (not always, but several times), and when I then press ctrl-alt-del, it gives me the message "failed to shutdown md devices". If you're getting the same thing, I think it's this bug: https://bugs.launchpad.net/ubuntu/+bug/350207

edit: it looks like installing backports may fix this problem. i just installed backports a couple days ago, and haven't had the problem since then, so time will tell ...

[tessk]

if you're on jaunty, here's the command to install backports:

sudo apt-get install linux-backports-modules-jaunty

[eddietours]

the last error say something like microcode sw error

[thomasaaron]

Did you install backports?

[eddietours]

yes seem ok now running some test

[eddietours]

seems back to normal thanks

[riseringseeker]

Did you install backports?

Tom,

Just so you know, I also installed backports and that seems to have fixed the hung shutdown for me as well. I didn't want to post sooner as I wanted to make sure it did the trick!

[thomasaaron]

That's good news, riseringseeker.

Was thinking about you yesterday while flying back from San Fran on a 757. Take-off and landing from/in Denver scared the bejeebees out of me. Strong cross-winds.

[swong]

Thanks to all. This is good to know, as it happens to me occasionally. Although when I press ctrl-alt-del, nothing actually happens.