# XOrgConfCreator Ubuntu VPixx dual monitor not found on outdated/end-of-life Ubuntu 18.04

**URL:** <https://psychtoolbox.discourse.group/t/xorgconfcreator-ubuntu-vpixx-dual-monitor-not-found-on-outdated-end-of-life-ubuntu-18-04/5277>\
**Category:** Hardware\
**Tags:** linux, gpu\
**Created:** [February 27, 2024, 4:34pm UTC](https://psychtoolbox.discourse.group/t/xorgconfcreator-ubuntu-vpixx-dual-monitor-not-found-on-outdated-end-of-life-ubuntu-18-04/5277 "2024-02-27T16:34:33Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![Nicholas](https://avatars.discourse-cdn.com/v4/letter/n/4da419/32.png) [@Nicholas](https://psychtoolbox.discourse.group/u/Nicholas)\
**Post date:** [February 27, 2024, 4:34pm UTC](https://psychtoolbox.discourse.group/t/xorgconfcreator-ubuntu-vpixx-dual-monitor-not-found-on-outdated-end-of-life-ubuntu-18-04/5277/1 "2024-02-27T16:34:33Z")

</div>

I would be grateful for some ideas on why my dual monitor setup is not being discovered by XOrgConfCreator

Environment: Linux Ubuntu 18 bionic, Psychtoolbox-3  
Both monitors are connected to the same PCI-card and turned on. I can move with the mouse something from one monitor to the other one. Both have DVI-in but one is connected to a DVI socket and the other to a display-port socket on the same PCI card via a DVI\>DP adaptor.

One monitor is a VPixx monitor that I would like to use for presenting stimuli to a subject, the other one should be reserved for the experimenter alone to control stimulus presentation. I tried to do so with XOrgConfCreator

but it reports:

Detecting type of primary display graphics card (GPU) and driver to use…  
Nvidia GPU with proprietary driver detected. Primary display gpu type: nvidia  
Uses the xf86-video-nvidia DDX video driver.  
Found a total of 1 video output displays on 1 X-Screens.

Only a single active display connected, so obviously you want a single-display setup.

---

<div class="post-metadata">

**Author:** ![mariokleiner](https://avatars.discourse-cdn.com/v4/letter/m/13edae/32.png) [@mariokleiner](https://psychtoolbox.discourse.group/u/mariokleiner)\
**Post date:** [February 28, 2024, 3:30am UTC](https://psychtoolbox.discourse.group/t/xorgconfcreator-ubuntu-vpixx-dual-monitor-not-found-on-outdated-end-of-life-ubuntu-18-04/5277/2 "2024-02-28T03:30:34Z")

</div>

Ubuntu 18.04-LTS is end of life since almost a year, and no longer officially supported by PTB since ~2.5 years. Also, a not recommended NVidia gpu, where the proprietary driver is way less compatible with XOrgConfCreator than other open-source drivers or the nouveau OSS driver.

Maybe your NVidia driver is too old to play well with XOrgConfCreator. Maybe an OS upgrade to a modern supported version would help.

Maybe you can use NVidia’s GUI settings tool `nvidia-settings` to create a 2nd X-Screen and suitable config file, instead of using XOrgConfCreator.

---

<div class="post-metadata">

**Author:** ![Nicholas](https://avatars.discourse-cdn.com/v4/letter/n/4da419/32.png) [@Nicholas](https://psychtoolbox.discourse.group/u/Nicholas)\
**Post date:** [February 28, 2024, 11:31am UTC](https://psychtoolbox.discourse.group/t/xorgconfcreator-ubuntu-vpixx-dual-monitor-not-found-on-outdated-end-of-life-ubuntu-18-04/5277/3 "2024-02-28T11:31:29Z")

</div>

Thank for your feedback Mario!

I will try for now another way of creating a 2nd X-screen. Your feedback on the OS version and GPU is much appreciated!