I've been through all questions with the 'Shutdown' tag on this site – but this is different.
I choose "Shutdown…" from the session menu.
I then click "Shutdown" on the dialog that appears.
Sometimes this does give me a shutdown and sometimes nothing happens and I am left with my desktop – which still works fine (that is, I can continue working on my computer if I want). Typing "sudo halt" from a terminal always works.
I'd like to have shutdown work every time. Can anyone help?
Best Answer
you can try experimenting with different kernel options. try one at a time and see if it has any effect
like for example:
acpi = force or acpi = off
to try one out , when grub(with the selection screen of ubuntu-linux kernels, pops up after you have booted your computer,
press the "e" button to edit your current configuration.
to the line that has the words single quiet, add one of the proposed otions above.
this setting is not permanent over reboot so there is no risk of wrecking anything. if this works, and you want to make it permanent its time for a follow up question :)