After changing my graphic driver to one of the options shown as proprietary, I lost unity (wallpaper shows, terminal can be opened with ctrl+t, but nothing else displays).
My notebook: Dell Vostro 3560, Intel® Core™ i7-3612QM, AMD Radeon HD 7670M, 1 GB VRAM
What I already did is:
Add UNITY_FORCE_START=1 to /etc/environment
Reinstall the driver with sudo apt-get install fglrx-legacy and ...fglrx-* (tried them all)
For the last one: "fglrx-installer" as mentioned in the link was not found.
When I go to terminal (ctrl+alt+F1) and run the command unity, I get some hundred error lines reading like
Compiz (opengl) - Fatal: glXQueryExtensionsString is NULL for screen 0
If it helps:
lspci| grep VGA
VGA compatible controller: Intel Corporation 3rd Gen Core Processor Graphics Controller (rev 09) VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Thamas XT [Radeon HD 7670M]
How can I revert my change to a proprietary graphic driver without beeing able to open the drivers window I made the changes in?
I followed the proposed procedure, unfortunately I had no success, as there where multiple errors. Eventually someone is able to interpret them.
1)/etc/X11/xorgs.conf does not exist.
2)unitx-reset gives 50+ errors "dconf-WARNING **: failed to commit changed to dconf: Error spawning command line 'dbus launch --autolaunch..."
3) installing fglrx from launchpad failed for dozens of unresolveable dependencies.
4) sudo apt-get install fglrx
How can I get rid of all manually installed drivers and use the pre-installed ones that where shipped on the cd? Thanks!