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Yesterday I upgraded my system with sudo apt-get upgrade. I upgrade on a regular basis so not a lot of packages were installed and i don't know which ones this time. But after that i booted my computer and he hangs on "Checking battery state".

I googled a bit and i could manage to start Unity, how:

crtl+alt+f1 to open a terminal
startx (this starts the graphical stuff)
once that was started i opened a terminal with ctrl+alt+T
and then the command: unity &disown

Now everything works as normal. But this is annoying, and how can this be fixed. After googling a while i guess that it has something to with my video card.

The info:

~$ fglrxinfo
display: :0  screen: 0
OpenGL vendor string: Advanced Micro Devices, Inc.
OpenGL renderer string: AMD Radeon HD 6400M Series
OpenGL version string: 4.2.11631 Compatibility Profile Context

My video card: Radeon 6470M

I also tried to download the driver from http://www2.ati.com/drivers/linux/amd-driver-installer-12-4-x86.x86_64.run and followed these instructions https://help.ubuntu.com/community/BinaryDriverHowto/ATI but my system still hangs at boottime.

What do i need to do to get my system boot as normal again. If you need additional info let me know.

Edit: somehow Ubuntu can't work anymore with the proprietary drivers from Ati for Radeon HD 6400M Series. I reinstalled Ubuntu and everything works fine (at first sight), but i want to install the proprietary drives. Now the problem is that i can't connect a second screen to my laptop anymore ... therefore i need the proprietary driver

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I had never seen &disown before. Excellent. To fix this completely I think you will have to figure out what is going wrong. Two things occur to me, either compiz isn't set up properly to start unity or there is a timing issue. ~/.xsession-errors or /var/log/syslog or /var/log/Xorg.0.log may have some hints in any case. You might also try logging into ubuntu-2d or onto unity with a different user-id to help narrow down what is happening or use radeon rather than fglrx. Does ~/.gconf/apps/compiz-1/general/screen0/options/%gconf.xml contain a string "unityshell" and "unitymtgrabhandles"? –  John S Gruber Jun 7 '12 at 21:03

2 Answers 2

After a few days I did a sudo apt-get upgrade again and I was able to install the proprietary driver again. Now everything works correctly again.

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Cool--it seems the problem may have been fixed with an update (after having been introduced by an earlier update). –  Eliah Kagan Jun 11 '12 at 7:55

Follow this steps (I've done the steps now, so I don't know if they work):

  1. Press Ctrl+Alt+F1.
  2. Type cd ~ (if you opened a folder before)
  3. Type nano .bash_profile
  4. Add to the file unity &disown
  5. Press Ctrl+X, now press Y.
  6. Reboot your computer typing sudo reboot and typing your password.
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With this answer I believe you will still have to sign on to vt1 with Ctrl+Alt+F1 to run startx, but this will save you some typing. –  John S Gruber Jun 7 '12 at 20:48
    
Thanks, but this still doesn't solve the issue, this ensures that Unity gets started after logon. –  lukin Jun 8 '12 at 7:17
    
Then I have no idea :/ –  espectalll123 Jun 9 '12 at 9:55
    
Even for reinstall the drivers, I have no idea. –  espectalll123 Jun 9 '12 at 9:57

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