1. steam comes OpenGL library is outdated, run may complain about something "Can not find OpenGL GX" and the like, see ArchWiki "steam" entry, delete the steam that comes with several libraries.
2. But then delete those libraries steam comes you need to install the new version of the library in the system, other than the 64-bit library remove (unlikely there are people in the 32-bit system with it), to see if there 'lib32- mesa "and" lib32-mesa-libgl "dual graphics cards also need to install lib32" lib32-intel-dri "do not ask why, do not install the card, then will be very, very," primusrun "will quietly fail," optirun "will prompt" can not find opengl entry point xxxx " something like.
3. NVIDIA drivers need to install "nvidia" instead of "nouveau" install "nvidia-utils" and "lib32-nvidia-utils" . But when the "bumblebee" may be dependent on the installation of the conflict, see "bumblebee" entry ArchWiki, as if to install "intel-dri", "xf86-video - intel", "bumblebee" and "nvidia" to circumvent reliance conflict.
4. "bumblebee" is used to switch alone was something to run a program, but "startx" into the desktop environment or use of Intel graphics core, so do not generate "xorg.conf", if your system has any legitimate the "xorg.conf", or whether it is under the home directory "/ etc / X11", delete it or change the names will not be detected, or you may not start X11. Of course, you have to configure bumblebee good job, "optirun glxgears -info" to see if there is no information output "NVIDIA" indication, the output is a good job.
5. dota2 not use "optirun" run up, install "primus" package, use the "primusrun" to run, of course, do not run in a virtual terminal dota2, a setback that too. steam in the right dota2, "Properties" in "SET LUNACH OPTIONS ..." fill inside "vblank_mode = 0 primusrun% command%" of course, is a global service, if you play a perfect world, the national service agency to fill "vblank_mode = 0 primusrun% command% -language schinese -international -perfectworld . "
6. If you are using a previously open source drivers, N card driver switches from the nouveau need to rebuild the kernel image after the nvidia, take a look at "/etc/mkinitcpio.conf" comment out all the nouveau module, then "sudo mkinitcpio -p linux "after the restart," dmesg "to see the information in the information nouveau" and "nvidia" no words ", should the former not the latter there.
7. This one is not anything important, because we are dual graphics cards, only time will run manually switch 3D graphics, usually are used in Intel graphics core, so no need to add "nomodeset" kernel parameter to disable kms.
8. to say that is not BUG feature, steam installation of perfect proxy dota2 run national service beginning is not full-screen, set up in the upper left corner of the video to find the bar into "full-screen" like the past seems to be "What no window" sort of thing, the game screen will be covered Xfce4 panel, very boring.
Transfer: https://blog.csdn.net/iSpeller/article/details/37765999