Sorry. I got that information from System Tools > System Monitor > Tools > Launch info centre > Software, at the top. Lower down it does also mention, Qt Version 5.15.13; elsewhere I see LXQt Version:1.4.0
cat /etc/os-release reports “Ubuntu 24.04.3 LTS”
Certainly installed it from a Lubuntu iso though, and it identifies itself as Lubuntu on startup.
With the printer, I’ve managed to extract Dell-Color-Laser-3110cn-1.0-1.noarch.rpm from the driver CD downloaded from the above 3rd party site, and convert it to dell-color-laser-3110cn_1.0-2_all.deb using Alien
I’ll try to install
nginmu@pc:~/Desktop$ sudo apt install ./dell-color-laser-3110cn_1.0-2_all.deb Reading package lists… Done Building dependency tree… Done Reading state information… Done Note, selecting ‘dell-color-laser-3110cn’ instead of ‘./dell-color-laser-3110cn_1.0-2_all.deb’ The following packages were automatically installed and are no longer required: kdeplasma-addons-data libgl1-amber-dri libglapi-amber libkf5unitconversion-data libkf5unitconversion5 libllvm19 plasma-dataengines-addons Use ‘sudo apt autoremove’ to remove them. The following NEW packages will be installed dell-color-laser-3110cn 0 to upgrade, 1 to newly install, 0 to remove and 112 not to upgrade. Need to get 0 B/17.4 kB of archives. After this operation, 169 kB of additional disk space will be used. Get:1 /home/nginmu/Desktop/dell-color-laser-3110cn_1.0-2_all.deb dell-color-laser-3110cn all 1.0-2 [17.4 kB] Selecting previously unselected package dell-color-laser-3110cn. (Reading database … 376187 files and directories currently installed.) Preparing to unpack …/dell-color-laser-3110cn_1.0-2_all.deb … Unpacking dell-color-laser-3110cn (1.0-2) … Setting up dell-color-laser-3110cn (1.0-2) … N: Download is performed unsandboxed as root, as file ‘/home/nginmu/Desktop/dell-color-laser-3110cn_1.0-2_all.deb’ couldn’t be accessed by user ‘_apt’. - pkgAcquire::Run (13: Permission denied) nginmu@pc:~/Desktop$