I downloaded Ubuntu 12.04 using Wubi. The installation went correctly and everything was working fine until I tried to shutdown.

I clicked shutdown and then Ubuntu started shutdown, but as soon as I saw the Ubuntu logo with blank dots under, it froze. I had to perform a hard shutdown.

After booting my computer back and going into Ubuntu, I tried shutting it down again but this time it took me on a black page with lots and lots of log writing on the screen and after a little while, it stopped writing stuff.

I was able to input characters using the keyboard and everything, but it never shutdown. I had to perform a hard shutdown again.

Now it always gives me a Ubuntu logo and freezes. What should I do?

I know hard shutdowns are bad and want to avoid them. Is there anyway to make shutdowns work? I tried a reboot and it also froze on the Ubuntu logo.

• Sony VAIO Model E SVE17115FDB Laptop.


• Graphic card - AMD RADEON HD 7650M (and it installed correctly in Ubuntu).


• BIOS - H2O Bios.


• Processor - Intel i7-3612QM.

Edit:

I only installed the AMD/ATI proprietary drivers FGLRX, not the AMD/ATI post release drivers because they keep showing an error message. Here is jockey.log.

Edit 2:

Here is the log that i mentioned before that appeared on my screen, it appeared after i tried reinstalling my AMD driver but failed so i reinstalled the other one. Sorry for the quality i took those pictures with my phone.

Edit 3:

This problem is indeed caused by fglrx (not the post-release one), i uninstalled it and my computer shutdowned wihtout a single problem, but i need those drivers to be able to change the brightness of my computer and without them Ubuntu is really, really slow. Is there anyway to fix this package?