First off, old, yes; obsolete, no, yet more misinformation. Please stop with your misinformation. To answer your question, yes older code is better. Here is why (link below). I'd like to see how you will contradict it. The author of this article co-founded Fog Creek Software. He also worked with Jeff Atwood to create Stack Overflow and served as CEO of Stack Overflow from 2010-2019. He also served as the chairman of the board for Stack Overflow, Glitch, and HASH.

https://www.joelonsoftware.com/2000/04/ … do-part-i/

There is some misinformation about Pale Moon in this thread, so at risk of being called a lackey, I'd like to correct the record. I'll just mention one inaccuracy.

According to the developer,

The above quote is from here. If you want the facts on Pale Moon, I suggest giving it a read.

Okay, I see python3-pyqt4 in Synaptic. But I don't see pyqt4-dbus (or python3-pyqt4-dbus). So I did a search of "dbus" and I see that I have the following installed:

python-dbus.mainloop.pyqt5
python-pyqt5
python-qt4
python-qt4-dbus
python3-dbus
python3-dbus.mainloop.pyqt5

It was downloaded from the hplip site. The file is hplip-3.19.5.run. Here are the pertinent parts. At some point, I get this:

MISSING DEPENDENCIES
--------------------
Following dependencies are not installed. HPLIP will not work if all REQUIRED dependencies are not installed and some of the HPLIP features will not work if OPTIONAL dependencies are not installed.
Package-Name         Component            Required/Optional   
pyqt5-dbus           gui_qt5              OPTIONAL            
pyqt5                gui_qt5              REQUIRED  

I type "y" and press enter. Then a bit later I get this...

DEPENDENCY AND CONFLICT RESOLUTION
----------------------------------
Running 'su -c "apt-get install --force-yes -ygtk2-engines-pixbuf" '
Please wait, this may take several minutes. . .
Running 'su -c "apt-get install --force-yes -y python-pyqt5" '
Please wait, this may take several minutes. . .
Running 'su -c "apt-get install --force-yes -y python-dbus.mainloop.pyqt5" '
Please wait, this may take several minutes. . .
error: A required dependency 'pyqt4-dbus (PyQt 4 DBus - DBus Support for PyQt4)' is still missing.
error: A required dependency 'pyqt4 (PyQt 4- Qt interface for Python (for Qt version 4.x))' is still missing.

Then a few seconds later, the terminal crashes and I'm still on hplip 3.16.11.

At this point, I'm just afraid to go on thinking that I might lose the printing function with all this fiddling around.

Okay, I'm taking a shot in the dark, it possible to use Debian's backports?

I found this: https://packages.debian.org/bullseye/hplip

I guess the bottom line is that the version of hplip that comes with ascii, 3.16.11, is not compatible with HP 8025. I need to upgrade to version 3.19.5 according to the hplip website; but when I try, I get dependency errors. I thought that since I got the printing problem fixed by using CUPS only, the scanner would work that way also, but I guess I was wrong? The only thing I can think of is to move to Devuan Beowulf. How can I find out what version of hplip comes with Beowulf?

Offtopic: I just noticed that when typing "Devuan" when making a post, it gets a red squiggly underline as if it's misspelled. That's ironic considering that this is Devuan's forums.

EDIT

Okay, so based on this, it looks like hplip 3.18.12 is the version on Debian 10. But according to this, the version on Debian 10.3 is hplip 3.20.5. So how do I know what version is available on Devuan Beowulf?

In hplip I keep getting the message "No Installed HP Devices Found," just like I did when I couldn't get it to print. However, at the bottom of this window it says:

Note: Only devices installed with the hp: or hpfax: CUPS backend will appear in the HP Device Manager.

Does that have anything to do with the URI of the printer I mentioned above not starting with "hp:" but with "usb"?

EDIT

Since posting the above, I tried installing and using Simple Scan. I got the same message, no scanner detected. Then, on another forum where I posted this problem, somebody mentioned I might try purging ippusbxd and replacing it with ipp-usb. So I looked them up, and ipp-usb isn't available in the repo, but ippusbxd is, and I noticed it was not installed. So I installed it and rebooted the computer and tried both Simple Scan again and Xsane and still no joy.

I successfully added myself to the scanner group, but Xsane still does not recognize the scanner. I wonder if trying Simple Scan would work; but being that both Simple Scan and Xsane are just GUIs for Sane, I'm thinking it won't make a difference.

I am confused as to what browser is being used (and rejected). Is it Basilisk? Is it Firefox ESR 68.0? Please clue us in. If you're using Basilisk and getting this error, use a UA override. If you're using an old Firefox ESR, update to the current one, 78.3.1.

Mind telling us what bank this is?

Shouldn't it be sudo update-grub?

I'll just stick to what's working. But I'm wondering now, can hplip be removed from my computer without affecting the printer?

Unfortunately it doesn't. Any other suggestions?

[Is 8025 considered part of the 8020 series? I can't understand why it's not being detected.]