Arch Linux

kush999996666

Member

Registered: 2020-08-24

Posts: 4

[SOLVED] Not sure how to configure dual GPU laptop Xorg

I have installed the Nvidia package and ran nvidia-xconfig to generate a Xorg config file. when using this file my HDMI port with an external monitor will work, however, my laptop screen is displaying a black screen with a static white cursor.  Deleting the autogenerated Xorg file and reboot will make both screens work but only on the intel graphic card. I get bad performance in games and in browsers too without using the auto-generated Xorg config file.

I don't have a switch in bios to switch which card is the primary GPU and I'm not sure if I need to set up Nvidia reverse prime/prime GPU offloading or bumblebee. I'm not sure how to configure this to work properly can some help me out.

Last edited by kush999996666 (2020-10-07 09:08:42)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,365

Re: [SOLVED] Not sure how to configure dual GPU laptop Xorg

Read and decide for an option: https://wiki.archlinux.org/index.php/NVIDIA_Optimus

kush999996666

Member

Registered: 2020-08-24

Posts: 4

Re: [SOLVED] Not sure how to configure dual GPU laptop Xorg

I tried the NVIDIA only option and edited the config files however my main screen is still black.

Update: I deleted the xconfig file that was auto-generated by nvidia-xconfig and both screens are working now with Nvidia only option. Im not sure if my Nvidia card is only being used for the HDMI monitor. But my fps in Dota isn't too bad so I guess its all good for now.

Last edited by kush999996666 (2020-10-05 22:14:04)

V1del

Forum Moderator

Registered: 2012-10-16

Posts: 25,365

Re: [SOLVED] Not sure how to configure dual GPU laptop Xorg

glxinfo -B
vulkaninfo

will show which card is used for acceleration for OpenGL/vulkan respectively.

if that shows nvidia you are good for most purposes that are relevant. The intel card is still used as that's where the internal display is connected to but only for rendering a complete image as provided by the nvidia card

xrandr --listproviders

should also show that the "modesetting" driver acts solely as an outputsource for the Nvidia card.

Please mark as [SOLVED] by editing the title in your first post: https://wiki.archlinux.org/index.php/Co … ow_to_post