Comment 8 for bug 58503

I have similar problems with a an older desktop PC using all of the desktop Edgy 6.10 versions of Ubuntu, Kubuntu, and Edubuntu, in that the PC does not shut down or restart as it should. The drives power off, but the monitor display stays on and still shows the logo, so the PC has obviously not completely shutdown. This is easily reproducible on my PC with all three Edgy Live CD's by simply booting up with the Live CD and telling it to shutdown (completely turn off the computer.) It simply won't shutdown completely.
NOTE: Ubuntu 6.06 LTS worked correctly in this respect and could shutdown or restart the PC when it was supposed to. I suspect this will turn out to be something very basic in changes made to power management. It is also probably the reason why the systems appear to "hang" when during installations when the PC gets to the "now remove the CD and press Return to continue" step. The PC is probably unable to continue its shutdown to restart due to the misbehaving power management. Do we need to be SU to shutdown our systems now?
Next: I plan to test various "shutdown" commands in terminal mode while SU. If that doesn't work, I will RTFM (read the fine manual) to see what I can learn about power management settings to see if this is something I can reconfigure. Meanwhile, holding my power-off button 5 seconds still works. :)