27th October 2016, 11:30
(This post was last modified: 27th October 2016, 11:32 by rocky7x.
Edit Reason: added Half-Life instructions
)
@sputnik_tr_02: Please paste the content of xorg.conf from your /etc/X11. The only difference I see is that I don't have xorg.conf at all. I use only defaults 
So maybe the xorg.conf from /etc/X11/ interferes with it somehow. I had similar behavior as you before (when I made it work but after reboot it stopped working), but I think it was all because of those bloody xorg.conf files. And Ubuntu 16.04 introduced the graphics-manager functionality which should automate the detection of graphics cards, but it does more harm than good. So please paste here the content of xorg.conf, so we see what you have in it and then maybe we conclude that you don't need it at all and then it'll all work 
For Half-Life please read this article: https://zipizap.wordpress.com/2012/03/12...bumblebee/
So maybe the xorg.conf from /etc/X11/ interferes with it somehow. I had similar behavior as you before (when I made it work but after reboot it stopped working), but I think it was all because of those bloody xorg.conf files. And Ubuntu 16.04 introduced the graphics-manager functionality which should automate the detection of graphics cards, but it does more harm than good. So please paste here the content of xorg.conf, so we see what you have in it and then maybe we conclude that you don't need it at all and then it'll all work For Half-Life please read this article: https://zipizap.wordpress.com/2012/03/12...bumblebee/