2

I have issues making 2 external monitors work on my Ubuntu 22.04 machine.

Setup

  • Ubuntu 22.04
  • Lenovo Carbon X1 3th Gen
  • NVIDIA GeForce GT 1650 Ti
  • nvidia-driver-515 (proprietary)
  • 2 external monitors connected by USB-C -> DisplayPort

I'm not able to use both of the monitors. If i'm trying to enable the second one, it shows me the message Changes could not be applied, this could be due to hardware limitation.

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If i choose NVIDIA On-Demand from the NVIDIA settings, it works on all monitors. But it's terribly slow. So i switched to NVIDIA (Performance Mode) but then only one external monitor is working and the other one can't be enabled.

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I tried as well...

  • Using another NVIDIA driver, but same result. By using the latest nvidia-driver-520 all external monitors do not show up anymore at all.
  • Removed and purged all drivers and started from scratch. Same result.
  • Same result after sudo ubuntu-drivers autoinstall

I'm new to Ubuntu and even Linux. What logs and config outputs could help for helping me out?

schaenk
  • 141

3 Answers3

2

I had to change the graphic option in bios from Dynamic graphics to Discrete Graphics. This makes sure, the computer uses the Nvidia card a does not switch to the integrated one to save power.

This solved my issue even with nvidia-driver-515.

schaenk
  • 141
1

Please check my answer to a similar question here.

I ran into the same issue with my RTX. As you may have guessed it, the problem happens with NVIDIA drivers. Try installing nvidia-driver-460-server as I suggested in the other post.

Nas
  • 31
1

I jumped through all the hoops - restarted about 15 times at least trying all kinds of different drivers. In my case, this is the only thing that worked:

sudo apt-get install linux-headers-`uname -r`
reboot

The problem happened to me after an OS update that must have messed up those linux headers.

Mike
  • 111