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I seem to have a problem. I am running ubuntu 12.04(64 bit) on my HP ProBooK 4530s (i5-core, 8GB, ATI RADEON HD6790) and I had some heating problems. I've managed to install the graphics driver from the website using this method:

What is the correct way to install proprietary ATI Catalyst Video Drivers (fglrx) directly from AMD?

All seems well, but when I switch to graphics mode to use the low power Intel onboard graphics card and I restart there are no more Unity elements - the upper menu bar, the dock on the left and when I managed to open a window (right click on the desktop) there are no longer the close, minimize, maximize buttons.

Didn't anyone else encounter this problem?

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i had same problem when i had gnome installed, but, as first, you can check file:

/etc/lightdm/lightdm.conf

is it there this line:

greeter-session=unity-greeter

if it is ok try to update and upgrade to try fixing headers in that way.

  • Thing is I am able to login, but afterwards I dont have anymore Unity elements. It's just the background with no menu bars, no nothing. – Andrei Mihaescu Mar 27 '13 at 20:47

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