I did something terrible this morning you can see here.

Now that problem was fixed , apt was working fine and so was the update manager .

after installing all updates , I rebooted.

And I could not log in. The login page will like refresh after I enter my password , every time. Then I installed KDM in place of LIGHTDM , and now I have no Unity shell , no panel , and the display settings gives an error

GDBus.Error:org.freedesktop.DBus.Error.UnknownMethod: No such interface `org.gnome.SettingsDaemon.XRANDR_2' on object at path /org/gnome/SettingsDaemon/XRANDR

Any help will be appreciated.

  • It would be better if I can revert back to lightdm – Ubuntu_beginner Jun 28 '13 at 11:08

Here are the instructions to fix this:

  1. Open the Startup Applications program from your Dash.
  2. Click Add.
  3. Name the item Unity Shell.
  4. Type the command you use to start Unity in the Command option.
  5. Click Add.
  6. Click Close.
  7. Restart your computer and Unity should start up.
  • Well I tried and found out that its installed. I dont have a problem with KDM ,but i have to manually run unity every time I log in and of course i cant use dual monitor. – Ubuntu_beginner Jun 29 '13 at 5:09
  • I updated the instructions to match your problem. – Dillmo Jun 29 '13 at 12:08
  • thanx. it worked. :) – Ubuntu_beginner Jun 29 '13 at 16:07

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