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#1 2019-09-22 19:18:00

synthead
Member
From: Seattle
Registered: 2006-05-09
Posts: 1,331

Lenovo P50: Hybrid graphics work fine, no screens found with discrete

I have a Lenovo P50 with Optimus, and as ironic as this sounds, I'm trying to get the "direct" discrete NVIDIA graphics to work.  Hybrid works fine, even the GPU pass-through with Steam games.  However, when I switch the graphics to "discrete" in the BIOS, Xorg says "no screens found" and does not start.

I have the nvidia driver installed, and have attempted the configuration as mentioned in this section of the wiki.  However, I can't seem to get past the "no screens found" problem with Xorg, and I'm not sure what to do from here.

How can I get NVIDIA graphics working on my machine?

Last edited by synthead (2019-09-22 19:25:48)

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#2 2019-09-23 10:35:40

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 7,806

Re: Lenovo P50: Hybrid graphics work fine, no screens found with discrete

If you have an actual BIOS/UEFI/firmware option to switch you should not need to use any xorg config (this includes an eventual setup via xf86-video-intel or similar). If not and you want to set up according to the Use Nvidia only section of the Optimus article, post all your files you've adjusted.

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#3 2019-09-23 17:50:19

synthead
Member
From: Seattle
Registered: 2006-05-09
Posts: 1,331

Re: Lenovo P50: Hybrid graphics work fine, no screens found with discrete

I do have an option in the BIOS, and yes, it doesn't make much sense that I would need any kind of special setup.  To Xorg, it should just be any other laptop with an NVIDIA GPU when this is enabled.  Add that to the mystery!

For this matter, I don't have anything changed that's worth writing home about.  I have tried an xorg.conf.d file here and there, but with a base configuration that has no changes, I am still able to reproduce this problem.

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#4 2019-10-05 03:54:25

synthead
Member
From: Seattle
Registered: 2006-05-09
Posts: 1,331

Re: Lenovo P50: Hybrid graphics work fine, no screens found with discrete

Any thoughts?  It's weird that this doesn't simply work with the NVIDIA driver!

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#5 2019-10-06 13:32:39

V1del
Forum Moderator
Registered: 2012-10-16
Posts: 7,806

Re: Lenovo P50: Hybrid graphics work fine, no screens found with discrete

Post the xorg log and a

journalctl -b

from the faulty boot.

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