Arch Linux

xtricman

Member

Registered: 2015-09-19

Posts: 3

How do I know which GPU is displaying content on monitor?

If I have a laptop with both Nvidia and Intel GPU, since I only have one built-in monitor, how do I know which GPU is displaying on my monitor?
Will there be any difference if I am using tty or Xorg?
Which GPU will Xorg use if install both xf86-video-intel and xf86-video-noeavu?

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 21,645

Re: How do I know which GPU is displaying content on monitor?

relatively easy way to check is running e.g.

glxinfo | grep OpenGL

or looking at the card selected for output in the xorg.log

However usually on modern laptops with that kind of a setup the intel gpu is the default and display driving card and the Nvidia card can be added on demand. In that regard xorg will use xf86-video-intel by default, and likely not care about your nouveau driver, since that ends up on the intel xorg server as well.

Read https://wiki.archlinux.org/index.php/PRIME for more info

Last edited by V1del (2018-04-19 07:29:44)