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Nyxynyx
Asked: 2020-09-08 20:57:58 +0800 CST

nvidia-driver-450 Resolution & 2nd GPU Problem on Ubuntu 20.04

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After installing Ubuntu 20.04 on my computer that has 2 monitors connected to the first GPU (Nvidia RX 2070 Super) and 2 monitors connected to the second GPU (Nvidia RX 2070 Super), there are 2 problems when using it with the GNOME desktop environment:

  1. 2 of the monitors has no display signal when connected to the 2nd GPU, but has display signal when re-connected to the first GPU. nvidia-driver-440 is used.

  2. On updating to nvida-driver-450, the same problem persists. In addition, everything seems to be zoomed in, making application windows appear off screen when launched. Downgrading back to nvidia-driver-440 solves this "zoomed in" issue.

NVIDIA X Server Settings show that 4 monitors are detected, but 2 of them (shared orange) are disabled and require a new X screen (X screen 1) to be created. Somehow, there is no option to set them to X screen 0.

enter image description here Screen cap showing the Display setings and NVIDIA X Server Settings after updating to nvidia-driver-450

Any idea how we can fix this problem? Thank you

multiple-monitors drivers nvidia graphics 20.04

1 Answers

  1. I have same problem with Ubuntu 20.04(In my case, dual ASUS GTX 1070)

    This is my question asked to DELL-community.
    https://www.dell.com/community/Precision-Fixed-Workstations/How-to-set-up-dual-monitor-with-dual-GTX-on-Ubuntu-20-04-or/m-p/7670304

    Some people soleved issue like this. Gnome ignoring second monitor Ubuntu 19.10

    I've tried everything I could bunt I couldn't solved my problem. So, I re-installed Ubuntu 20.04 (Then NOT checked "install proprietary-driver")

    I hope it helps you.

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