Grub parameter nomodeset seems to be interfering with display port detection

This is related the the support thread at Lubuntu startup goes to blank/no signal screen

… but that thread has already closed so I can’t continue the issue there.

Ubuntu Version: Lubuntu 24.04.2 the current LTS
Desktop Environment : LXQT 1.4

Problem Description:
I had to use the grub parameter nomodeset to get the pc to boot to the desktop. That PC needs to be used as an art station and use a wacom tablet, but it seems using nomodeset makes it impossible to detect display outputs from the GPU, which means the wacom can’t be mapped to a display (at least not with the xsetwacom command).

Relevant System Information:
GTX 1660 Super GPU
xrandr shows the outputs as HDMI-1 and DP-1, but everything else returns errors that the display port DP-1 can’t be found.

What I’ve Tried:
I’ve been relying on youtube videos and websearch AI for guidance on setting up the wacom tablet, including for troubleshooting. It worked fine on a pc that does not have any special grub parameters set, but not on the one using nomodeset. Both pcs use the same OS.

I don’t yet know for a fact that the nomodeset parameter is the cause of the issue, but everything I have found about possible causes points to that.

A post was merged into an existing topic: Lubuntu startup goes to blank/no signal screen