Honestly even most Excel users would be fine transitioning to LibreOffice Calc. I was very impressed with how most of my spreadsheets just worked on recent Calc versions. Formulas and charts were mostly all fine. Even pivot tables worked. I had one formula that had to be changed (it was specific to Excel, but there was an equivalent option in Calc), and one external data pull that I had to figure out. That was across 4 pretty involved spreadsheets.

The main problem will be users who are so ingrained with the specifics of navigation that they can’t easily adapt to a new menu system. The same happened when Microsoft changed from the old toolbars to the ribbon. And that will be an issue across all the apps.

For DIY consider a setup that supports ECC RAM to help prevent corruption. Any good server motherboard should do.

Unraid is pretty easy to get going on. That’s probably the direction I would take in your situation.

Also, if you’re not doing 3-2-1 backup now might be a good time to consider an off-site backup plan. That 4-bay Synology at a friend’s house with a VPN path would be an option for critical data. You could give them some partitioned space on there and on your new NAS to compensate for the power usage. Setup Borg or Restic and it’ll be encrypted on the remote NAS, and benefit from incremental and dedupe to minimize bandwidth usage.

Latest release seems to have been in March 2025. The version you get would depend on how you installed it. For Ubuntu/Kubuntu it looks like maybe they point to the Snap store? I have no idea how well that works and personally would avoid it.

Did you do that, or, download a deb or install “printer-driver-gutenprint” via apt?

In another comment you said you have the Canon proprietary driver. I think you would need the CUPS driver for this to work.

I didn’t do this recently enough to remember what the process looked like. But in your situation I would probably try to uninstall everything print related, reboot, and then start with sudo apt update -y && sudo apt install printer-driver-gutenprint and see where that gets me.

The Gutenprint plugin has support for a bunch of Canon printers. I haven’t used it in a while but I remember it supporting borderless prints with CUPS drivers. Maybe not for all printers? Worth a look at least.

How about creating your own LAN within the untrusted network?

Something like an inexpensive OpenWRT router would do fine. Connect all your devices and the server to the router. They are now on a trusted network. Set up Wireguard on the OpenWRT router to connect to Proton so that your outbound traffic from all your devices is secured.

The port is forwarded from your router to the pi, right? If so, you could test for the router as the bottleneck using the router’s WAN side IP address as the target.

This should give you a good data point for comparison. If it’s also slow then you can focus on the router performance. Some are slow when doing hairpin NAT.

I’d say your chances are very good. Even their high end rackmount models work with the usbhid-ups driver. Don’t think they would change things up in this regard since they would also need to change their software.

You might want to do a DNS leak test from your phone with the wireguard connection down and then with it up to make sure you’re tunneling DNS. This will be clearer if you set pihole to use something upstream that an ISP is unlikely to use - quad9 for example.

My understanding of why is that it relates to their change to a scene-referred workflow. Up to v3, darktable used a display-referred workflow like other programs. In that model the image you start with is mapped on a tone curve from the start where 0 is pure black and 1 is pure white, and the midpoint is set to midway between. This is all from the standpoint of what your display can render. The scene-referred workflow in v4 doesn’t do that. All the tones are mapped in an unbounded and uncurved way. So images look flat, but you’ve retained maximum data, so you have more to work with. The developers assume that you want control and maximum fidelity. There’s a better explanation in the intro of the documentation. This impacts everything - especially the color balance.

One of the problems is that all of the display-referred tools remain as modules in the interface, and some are even used in the base processing, but you’re not supposed to use them. At least if you want to do things the ‘right’ way. We created a custom panel that has 90% of what we regularly use (shared UI with my partner). That plus creating some presets that work well with our cameras has made it very quick to get a satisfying output in a minute or less.

Honestly, if you want to do minor tweaks to a RAW and mostly want what the out of camera JPEG looks like, there are much easier tools. If you at least occasionally deal with really challenging photos, or you want to get creative in the processing of some of your RAW images, darktable opens up a lot of possibilities, while being free and open source. So I think it’s worth the effort to learn. Shooting with a colorchecker helped us get the presets we wanted for a variety of shooting conditions.

Same here. DigiKam and darktable.

Getting color balance with raw in darktable took quite a while for us. It was helped by using a Color Checker Passport in a few shooting conditions to use for reference and calibration. Once we got past that darktable has been great.

It’s not bad to get running, and the alerting is really flexible. You can add Nagios and syslog alerts easily too.

It’s not very exciting, but: Network UPS Tools (NUT).

Keep everything in good shape in the event of a power outage.

Here’s my messy-cabled 9u rack.

It has:

• Fiber gateway out of view on top of the rack.
• Switch, which also powers 2 Ruckus APs and 2 other switches.
• Mikrotik RB5009 router.
• Raspberry Pi x3 all running Debian Bookworm. I have too many pis right now, running Home Assistant, LibreNMS, Log collection, and a read-only NUT server that orchestrates shutdowns and startups on power loss. I need to consolidate these.
• 1L PCs. One is on Debian serving media and files. The other is a test server where I’m trying out Immich on openSUSE. I’m considering moving to that and rootless podman for services. To that end I have another of these 1L boxes on my desk trying other options (MicroOS, Fedora IoT, maybe others).
• HDs. These are backup drives for the 1L server. I keep them powered off except when needed.
• UPS and a managed, switched PDU.

Everything is set up for low energy consumption (~90w), remote admin, and recovery from power loss.

Darktable is fantastic, but the learning curve is steep for great results. It took us months to get comfortable with it after using Capture One, Lightroom, Photoshop/ACR. It’s different. Our first efforts looked like crap.

For someone processing just a few files I think RawTherapee is probably easier and likely to give better results with limited effort.