Thank you all very much for your time and assistance.

I'll have to find out how to install the Trinity DE.

No error now when I run apt update or apt upgrade so that's good.

The Update MGR still isn't working no matter what I try to look for (Shutter) by typing the name of the program or software in.
I posted the screenshots on Pinterest.

https://www.pinterest.com/Alexmockly/devuan/
https://www.pinterest.com/pin/652881277257903173

It looks like any software that I need I'll have to use the command-line is that right?

Fixing the sources.list to the best of my ability here is what my /etc/apt/sources.list looks like now.

deb http://deb.devuan.org/merged daedalus          main
deb http://deb.devuan.org/merged daedalus-updates  main
deb http://deb.devuan.org/merged daedalus-security main

# daedalus-updates, to get updates before a point release is made;
# see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports

deb http://deb.devuan.org/merged daedalus-updates main non-free-firmware
deb http://deb.devuan.org/merged daedalus main non-free-firmware
deb http://deb.devuan.org/merged daedalus-security main non-free-firmware

Is this ok now?

Since Synaptic didn't install Gimp properly I used the command-line to install Gimp. It's running very well!

$ inxi -b
System:
  Host: devartbox Kernel: 6.1.0-17-amd64 arch: x86_64 bits: 64
    Desktop: Cinnamon v: 5.6.8 Distro: Devuan GNU/Linux 5 (daedalus)

Here's my sources.list:

#deb cdrom:[Devuan GNU/Linux 5.0.1 daedalus amd64 - desktop 20230914]/ daedalus contrib main non-free non-free-firmware

deb http://deb.devuan.org/merged daedalus main non-free-firmware
deb-src http://deb.devuan.org/merged daedalus main non-free-firmware

deb http://deb.devuan.org/merged daedalus-security main non-free-firmware
deb-src http://deb.devuan.org/merged daedalus-security main non-free-firmware

# daedalus-updates, to get updates before a point release is made;
# see https://www.debian.org/doc/manuals/debian-reference/ch02.en.html#_updates_and_backports
deb http://deb.devuan.org/merged daedalus-updates main non-free-firmware
deb-src http://deb.devuan.org/merged daedalus-updates main non-free-firmware

I'm using the X-Cinnamon 5.6..8.

I tried to install GIMP using Synaptic Package Manager.
Gimp did not appear in my Menu at all. So I rebooted to see if that helped.
Gimp is still not anywhere on the system or in the Main Menu.

During the installation I created a password for the user and a password for root for administrative tasks.
I don't use sudo.

Thanks

How do I install seatd if it's not installed?

Fantastic news everyone!

Performing the fresh installation again was a complete success and I'm very pleased!

Wifi is working and Devuan looks exceptionally nice on my Gibabyte monitor.

Thank you all for helping me and GlennW thanks for your time and assistance.
Plugging in the usb during the install found the .ucode w/o a hitch. Firefox run's great.

Thank you for your help GlenW.

Moving the .ucode to /lib/firmware did not help after a reboot. The Wifi still isn't working.

There were other things about the system that were missing and I didn't have functionality like I should have. Arrow keys, forward and backward buttons were not present to move from directory to directory and other key things were just not in place to have a functional desktop system.

After downloading the full devuan amd64  bit .iso that is 3.7 Gig's last night I have decided this morning to perform a fresh install with that fresh .iso.

I'll be back to share how the fresh installation went.

I'm in the middle of the fresh installation. After I create a 500 MB Fat 32 partition and a /ext4 partition on the Samsung nvme I select "Finish partitioning and write changes to disk"

The Partition MGR only shows the 500 MB partition and the other 2 swap partitons on the other drives on my desktop to be formatted.
The 249. GB partition that I created for the /root partition doesn't show.

UPDATE* Good news is I was able to figure out how to partition correctly and Devuan is now install and under Cinnamon works.
Gnome boots to a all black screen.

The wifi isn't working so I will try to do exactly as you have taught me in the above post's by placing the /iwlwifi-9260-th-b0-jf-b0-34.ucode
in the /lib/firmware directory.

I don't think I'm using excalibur as I'm not sure what that is.
Looking in the rootfs I don't have /lib/firmware/intel. However I do have /lib/firmware/Intel and there are 30 plus files in that directory.

Do I need to download this for the .ucode?
https://packages.debian.org/bullseye/firmware-iwlwifi

OR do I need to move the /iwlwifi-9260-th-b0-jf-b0-34.618819.0.tgz to /lib/firmware/Intel?

Additional information to help you help me.
It looks like the firmware and the driver are both installed;

@devuanbox:~$ lsmod | grep -i wifi
iwlwifi               360448  1 iwlmvm
cfg80211             1134592  3 iwlmvm,iwlwifi,mac80211