I have a laptop HP Pavilion g6-1075er with Ubuntu 12.04 and AMD Radeon HD 6470M on board. I had default graphics configuration but some problems with xorg occurred. I had black screen, but I was able to "reset" graphics configuration to some workable state via recovery mode. But this state was slightly different from the default one (Alt+Tab didn't show same 3D selection, Alt+` doesn't work everywhere etc). So, I decided to revert it to default state. I checked this post http://ubuntuforums.org/showthread.php?t=1517170 and used the following commands:

sudo apt-get install --reinstall libgl1-mesa-glx libgl1-mesa-dri

sudo dpkg-reconfigure xserver-xorg

After rebooting I just get a black screen (in normal boot mode I think there is a nonblinking cursor also) and no login window. The same in recovery mode. So I can't enter any commands.

What can I do?

UPDATE: if I boot to Windows 7, hibernate and then boot to Ubuntu recovery mode, then I get the recovery menu.

By hibernating from Windows 7 and pressing cursor while loading Ubuntu I can get a TTY session. From there I tried to purge fglrx, install fglrx and many other things, but no effect so far.

  • ok, eventually I shrinked the Ubuntu partition, created a new one and I installed another Ubuntu (finally, I have working Ubuntu!). By that I can reach all my files (like firefox profile for example). Maybe some day I will repair the old system, but it was really strange...
    – vstepaniuk
    Feb 14, 2015 at 11:03

1 Answer 1


That post on Ubuntu Forums is over 4 years old - newer drivers have been released since then.

For Radeon drivers, this is my method.

  1. Boot up and when the black screen appears, press some of the cursor keys and a box appears with an X server error.

  2. Press CTRL + ALT + F1 to get a tty terminal.

  3. Log in as root. The password is your own password that you set during installation.

  4. Remove the Xorg drivers. apt-get remove --purge xserver-xorg-video-ati xserver-xorg-video-radeon

  5. Reboot

  6. Repeat steps 1-3

  7. apt-get update

  8. apt-get install fglrx-amdcccle-updates

  9. aticonfig --initial


  • thank you for your answer. I tried it, but it doesn't help
    – vstepaniuk
    Feb 4, 2015 at 19:05

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