Problems installing OMLx Rome on NVIDIA hardware

[Mordechai (Morris)]

Hello,

• OpenMandriva Lx version:
  Rome

• Desktop environment (KDE, LXQT…):
  KDE and I alse tried LXQT

• Description of the issue (screenshots if relevant):
  I have two machines with similar hardware, I’m pasting the output from one of them below from my current Endeavour install.

OS: EndeavourOS x86_64
Host: B550 UD AC
Kernel: Linux 6.12.12-1-lts
Uptime: 35 seconds
Packages: 1196 (pacman), 51 (flatpak-user)
Shell: zsh 5.9
Display (LG FHD): 1920x1080 @ 100 Hz in 24" [External] *
Display (LG FHD): 1920x1080 @ 100 Hz in 24" [External]
DE: KDE Plasma 6.2.5
WM: KWin (X11)
WM Theme: Breeze
Theme: Breeze (Dark) [Qt], Mc-OS-CTLina-Gnome-Dark-1.3.2 [GTK2/3/4]
Icons: breeze-dark [Qt], breeze-dark [GTK2/3/4]
Font: Inter (11pt) [Qt], Inter (11pt) [GTK2/3/4]
Cursor: breeze (28px)
Terminal: konsole 24.12.1
CPU: AMD Ryzen 5 5600X (12) @ 4.65 GHz
GPU: NVIDIA GeForce GTX 1660 Ti [Discrete]
Memory: 2.52 GiB / 62.74 GiB (4%)
Swap: 0 B / 4.00 GiB (0%)
Disk (/): 15.12 GiB / 44.12 GiB (34%) - btrfs
Disk (/home): 364.60 GiB / 1.77 TiB (20%) - f2fs
Disk (/home/backup): 144.17 GiB / 455.55 GiB (32%) - ext4
Locale: en_US.UTF-8

• Relevant informations (hardware involved, software version, logs or output…):

I tried the steps I detailed here:

Desktop logs out to lock screen (nvidia)

Status: Computer 1: Ryzen 5 2600 GeForce 1660 TI 16 GB RAM Booted into live cd fine, followed steps got a working install. Computer 2: Ryzen 5 5600X GeForce 1660 TI 32 GB RAM Locks up after loading “Plymouth” (Which I believe is Wayland loader right?) I used the same ISO on both, the official X11 linked on the main page. To get the second computer working, I just moved up the steps in the process. From ISO Grub menu select Advanced Options Then boot to the CLI type live and press e…

I also tried switching from SDDM to LIGHTDM as one of the users suggested.

Result:
There are issues with Display port dual screen setups and Plasma. This is something I’ve experienced in every other distro, and the majority of them (except MxLinux which is running an older kernel / driver /plasma from Debian 12) all have this same issue. When I start Steam the SDDM/Plasma screen monitor refreshes and one of the two outputs loses its mind and goes back to 1998, setting the resolution to 1024x768. As I said however, this is not an OpenMandriva problem it is a weird bug with Plasma + Nvidia + DisplayPort.

My second computer the newer one (with the specs above) uses HDMI output and doesn’t have this issue. However, I am still getting the random black screen to the log out screen and I cannot access any of the TTY settings in the latest kernel (It installs 6.13.rc5 when I was installing the open NVIDIA dkms driver. Interestingly, when I go back to 6.12 in the selection screen, TTY does work again)

So how do I resolve this on other Distros?

1. The DP computer I’ve decided to avoid Plasma as there’s no real way I have time to debug the root cause.
2. The HDMI computer is currently running Plasma on Endeavour which doesn’t have the random black screen kickout to the log in screen.

I’m hopeful these can be resolved, need guidance in troubleshooting. I can install an image on an external drive and produce any logs you need.