I have looked all over the Internet trying to find a fix, but I can't seem to find one. I have a custom built PC running an AMD processor, Nvidia graphics, 16GB of ram and a 1TB HDD for Ubuntu. I am not trying to dual boot, I just have Ubuntu 13.04 on the hard drive nothing else.

Every time I press 'Shutdown' or 'Restart', it goes through its normal shutting down thing; but, after that, there is just a black screen and nothing more. Nothing happens, it's just black. The only way for me to turn off Ubuntu at the moment is to press shutdown, wait for the screen to go dark, and then force shutdown it by pressing the physical shutdown button on the PC.

Could someone please tell me what is wrong and how I can get Ubuntu to work correctly? (Never had this problem when I was dual booting on my old HDD.)

P.S. I am able to log out.

After running Sudo shutdown it gave me an error this is the error:

'Modem-manger[5062]: Could not get the system bus. Make sure the message bus daemon is running! Message: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory
modem-manger[5078]: ModeUbuntu 13.04rsion starting...
modem-manger[5078]: Could not get. . . . m bus. Make sure the message [FAIL] e
* Will now switch to single-user modenect to socket /var/run/dbus/system_bus_so
root@mauritz-ubuntu:~# irectory'

And then just a ton of OK checking's, To me it seems like much of the text that it is displaying is overlapping on other text, so thats why it seems really weird.

Second error (running sudo shutdown as root):
"sudo shutdown now
*Disabling power management... [OK]
Saned disabled; edit /etc/default/saned
Speech-dispatcher disabled; edit /etc/default/speech-dispatcher
* Asking all remaining processes to terminate... [OK]
* Killing all remaining processes... [FAIL]
* Will now switch to singel-user mode"

2 Answers 2


I have the exact same specs as you, except with an Intel chip, and I had the same problem. Initially, I thought the culprit was the Nvidia GPU, and I tried both the proprietary and open source drivers, but was unsuccessful in fixing the shutdown problem.

Then, I came across two possible fixes, which I posted in this bug report Ubuntu 13.04 x64 doen't shutdown/restart

One solution option is to install the upstream kernel. (For me the upstream kernel caused network adapter emulation issues in VirtualBox).

The other solution option is to fix your wireless card, if you have one and it is not working. The technique for the Broadcom 43B1 device is posted here: 14e4:43b1 Broadcom Corporation Device 43b1 (rev 03) - not supported


Try sudo shutdown in your terminal, it could show you some related logs for this issue. Then edit your question with more details.

  • it is telling me Could not get the System bus. Make sure the message bus daemon is running! Message: Failed to connect to socket /var/run/dbus/system_bus_spcket: No suck file or directory... The rest I will put in the Post Aug 8, 2013 at 10:30
  • Some processes failed to stop. As @PJ Singh says, it could be due to issues from the kernel that wouldn't manage your device. Try with the more up-to-date (but stable) kernel you can find, your device should work fine now I hope.
    – smonff
    Aug 8, 2013 at 13:37

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.