I have downloaded Ubuntu 14.04 and wanted to try some OpenGL programming. My laptop has switchable graphics technology (Intel HD Graphics 4000 and AMD Radeon HD 8570M). I thought that it'd be better to install proprietary drivers and take advantage of OpenGL 4+ so first I installed the drivers by typing sudo apt-get install fglrx-updates, then I rebooted my pc. However, after boot, low-graphics error came up instead of login screen.
I didn't give up and tried searching google on my other computer. I tried almost everything possible, yet it still looks like my graphics is not being recognized.
It's worth noting that I have linux-headers installed and am using 64bit version of Ubuntu. Also, when I uninstall the fglrx driver, everything works fine again.
Here's what I already tried:
- Reinstalling the drivers (complete purge).
- Entering low-graphics mode and typing
amdconfig --initial. - Installing the newest drivers drivers from amd.com (I also tried beta drivers; no luck).
- I switched LightDM to GDM, still no luck (it completely broke my Ubuntu installation).
Thank you for any suggestion.
EDIT: By reading some log files I came to a conclusion that the greeter fails to start. I just don't know why.
EDIT 2: I installed GDM once again. Now it boots to console without showing any error. I tried to log in and type startx and it says Caught signal 11 (Segmentation failed).
