I'm a recent Ubuntu convert from Windows so please bear with my linux noobness for the moment.
I've got a Dell Vostro 3550 (Ubunbu 12.04 driver certified) running an ATI Radeon 6630m. I'm trying to get an external monitor to run but am having issues. I have installed both the proprietary ATI drivers from the AMD website and the FGLRX driver from System Settings > Additonal Drivers but the problem is persistent across both.
Essentially the second I configure monitors to extend and put them in the correct orientation and click Apply; both monitors randomly change resolution, one will black out, the other will turn on with the wrong resolution, then they will be mirrored etc etc. This continues and repeats until I unplug the second monitor from the laptop. This also happens so fast it makes it almost impossible to further configure the PC while the external monitor is connected.
I must have uninstalled and reinstalled drivers 20 or 30 times now. Not sure where to go from here, would really appreciate some help. Thanks guys!