I know there are a couple of threads about this already, but no solution worked for me.
I did a fresh installation of Ubuntu MATE 16.04 on a new notebook with a Skylake chipset and a GTX 965M Refresh. Everything went surprisingly well until I wanted to replace my current workstation, which includes plugging in an external monitor, keyboard and mouse.
Whenever I plug in the HDMI of the external monitor, the laptop screen turns black and the external monitor doesn't get any signal either. When I unplug the HDMI again, the laptop screen stays black and I have to do a hard reset. CTRL+ALT+F1 doesn't get me a picture and the laptop FN key combinations to switch monitors or turn the display on/off also don't do anything. Same happens when I boot with the external monitor plugged in - it just all goes dark after GRUB.
I tried this with:
- Kernel 4.4.0 + Nouveau
- Kernel 4.4.39 + Nouveau
- Kernel 4.8.x + Nouveau
(I didn't get NVIDIA drivers working yet)
Secure boot and Onboard Intel video card is both disabled..
I'm kinda out of ideas, because I can't even debug this while the external monitor is plugged in.
I don't work with desktop distros too much, I just use them for work. So if anyone could point me into a direction where/how to debug this, it would be great. I pretty much excluded video drivers and kernel as a source of the issue already, so I'm not sure what else to do.
I tried xorg-edgers PPA, but same issue with the more recent packages from there.
xorg.conf
file for the new monitors? I believe that for NVIDIA it would begksudo nvidia-xconfig
. Move your oldxorg.conf
(backup) so it knows to create a new file. Not sure this is possible if everything is turning black on you, however.nvidia-xconfig
. However I just realized that the NVIDIA drivers never actually got loaded - I thought they were but DKMS module was missing which was the sole reason I got one of the kernel to boot with nvidia drivers installed. So trying to solve this first: askubuntu.com/questions/866568/…