I have recently upgraded to 16.04 (from 14.04). Since then, the system is running on low graphics (800x600, built in display). I assume the best advise to be reinstalling Ubuntu 16. But the question is, as I see the graphical problems now, does 16.04 LTS even support my Radeon graphic cards (hybrid or one) properly? Or should I reinstall Ubuntu 14 and going back to fglrx-driver (btw, even there only one graphic card worked properly)? Is there another solution?
00:01.0 VGA compatible controller : Advanced Micro Devices, Inc. >[AMD/ATI] Kabini [Radeon HD 8330] [1002:9832] Subsystem: ASUSTeK Computer Inc. Kabini [Radeon HD 8330] [1043:148d] Kernel modules: radeon
01:00.0 Display controller : Advanced Micro Devices, Inc. [AMD/ATI] >Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 / M430] [1002:6660] Subsystem: ASUSTeK Computer Inc. Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330] [1043:21fd] Kernel modules: radeon
xrandr: Failed to get size of gamma for output default Screen 0: minimum 800 x 600, current 800 x 600, maximum 800 x 600 default connected primary 800x600+0+0 0mm x 0mm 800x600 75.00*