I have an ASUS N55S notebook with nVidia Geforce GT555m chipset. In addition to the notebook display, I have an external Samsung monitor that is connected via HDMI. Since the update from Ubuntu Gnome edition 15.04 to Ubuntu Gnome edition 15.10, I have the following graphics driver issues:
Issues with the Nouveau driver:
- Occasional mouse pointer artifacts, especially (but not exclusively) when the mouse pointer is over the title bar of the desktop, the system tray, scrollbars, menues, etc.
- I want to use the external monitor as the main display. When I change that in the "Displays" settings and press apply, the dialog asking if I want to keep the changes appears, but I cannot click any button. It looks like the screen is frozen, even the counter counting down the seconds until the changes are reverted is frozen. I can still move the mouse, but I cannot click on anything.
Since I had the artifacts issue with the Nouveau driver in previous Ubuntu releases too, I always went with the nVidia driver which fixed this issue. The problem with 15.10 is, that the nVidia driver is also not working.
Issues with the nVidia driver:
When the nVidia driver is installed, the graphical user interface does not start at boot and I end up with a hires command-line login prompt that is constantly flickering. Keyboard presses are ignored most of the time, so I cannot really login to the system. In addition to the latest nVidia driver that comes with Ubuntu 15.10, I have also added the nVidia driver PPA and installed the 355.11 driver, but the result was same.
I have also tried to do a clean install with the Ubuntu Gnome edition live CD, but the installer freezes at boot.
Any ideas how I can solve these issues?