Guest CentOS in virtualbox failed to load GNOME Power manager

Question

I searched everywhere but not able to fix my problem. Can someone please help me?

Here are the details

1. I have Ubuntu 14.04 LTS as host OS.
2. I installed Oracle VirtualBox on it
3. Then I installed CentOS 6.6 as guest OS inside VirtualBox.

I was using it daily with no issues. Suddenly one day I saw a message that "Configuration defaults for gnome power manager has not been installed correctly", then I get login screen and after login nothing is displayed inside the VM window.

I used the gparted-live-0.22.0-2-i586.iso to go to its command prompt and there I used fdisk /dev/sda command to resize the partition.

Even after that I am not able to resolve the GNOME error and not able to login to centos inside virtualbox.

Can someone please help? Let me know if you need additional information.

Answer 1

1. At login prompt, press Ctrl-Alt-F2, this brings you to tty2, a text window. (You can try Ctrl-Alt-F1 to satisify your curiosity).

2. Login as root user.

   yum remove gnome-power-manager
   yum install gnome-power-manager
   reboot

I tried it on my system it works. One more thing, while installing gnome-power-manager if it shows some error regarding space issues just free some space for this installation