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# README for prime-run
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This script replaces bbswitch/bumblebee/primus. Details can be found in the
NVIDIA documentation, see:
http://us.download.nvidia.com/XFree86/Linux-x86_64/525.105.17/README/primerenderoffload.html.
It is intended to be used with the nvidia closed-source drivers. Either nvidia
or nvidia-fb should work.
Use it by calling it before a program, for example:
$ prime-run glxinfo
It may be necessary to load nvidia kernel modules before starting the X
server, for example like so in /etc/rc.modules:
/sbin/modprobe nvidia
/sbin/modprobe nvidia-drm
/sbin/modprobe nvidia-modeset
/sbin/modprobe nvidia-uvm
If modules are loaded and devices detected correctly, you should be able to
see multiple xrandr providers like so:
$ xrandr --listproviders
Providers: number : 2
Provider 0: id: 0x45 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 3 outputs: 4 associated providers: 0 name:modesetting
Provider 1: id: 0x240 cap: 0x0 crtcs: 0 outputs: 0 associated providers: 0 name:NVIDIA-G0
Example lspci output:
$ lspci | grep -E 'VGA|3D'
00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 620 (rev 07)
01:00.0 3D controller: NVIDIA Corporation GP108M [GeForce MX150] (rev a1)
Example prime-run usage test:
$ glxinfo | grep 'OpenGL renderer'
OpenGL renderer string: Mesa Intel(R) UHD Graphics 620 (KBL GT2)
$ prime-run glxinfo | grep 'OpenGL renderer'
OpenGL renderer string: NVIDIA GeForce MX150/PCIe/SSE2
