EDIT: Done and uploaded and ready for testing.

Added a function for clickable hyperlinks to open in default browser, and a first run dialog that now offers to install the save folder in the default location or let the user select one via the file-chooser dialog. Thanks to ceeslans and Zathras for the suggestions! Note: Have not packaged or uploaded this new version yet, this will be v. 1.0-2

^^ Nice, thank you! Going over that data now, will have some questions later if that's okay?

Good question, I don't have an answer though as the mate-mini doesn't have any packages that require QT libraries, it's all GTK, I would think it wouldn't matter what toolkit is used, but I could be wrong. I'm going to snapshot a new Xlibre version with the compositor turned off later today to make it easy for folks to test, maybe load some QT apps in a live-session and see how they work, I haven't even tried video yet, just wanted to make a base model to start with and go from there.

Okay finally got some time to re-visit this earlier, so I went in and turned off Mate's built-in compositor (Xpresent) and all the artifacts went bye-bye and seems to be working smoothly. Seems like it doesn't play too well with compositors, though in fairness they didn't work too well on X11 either, some bugs in that compositor that need to be fixed. Didn't try it with picom.

Still have the issue with the amdgpu package and libgallium, but the rest seems stable, so I may try and run another iso with xpresent turned off.

Got the logic done (at least preliminary) for adding temp, humidity, and pressure done, you won't need to try and figure out what the barometric pressure is at your location to use it, you just need the elevation which is easy to remember and a constant (unless you travel) and the app calculates it for you and adds the data to the calculations. Also added a toggle for the main pane to switch from chart-view to an editable notes pane and back. Still have to hook that into the notes column and mod the save function to include the chart and notes, and then it's a LOT of testing and refining from there, possibly a couple more features too.

EDIT: I don't know why the pics are blurry but the app is nice and sharp actually, lol.
EDIT2: VuuPew is an acronym, it stands for "Veteran Unix User's Projectile Estimation Widget", my wife came up with that name, I think it's brilliant.
EDIT3 3-29-2026 : Added wind drift but my math is still off a bit, got everything else done and the save function puts out a great simple printable chart + notes and details, updating the screenie below.

For a terminal based file manager, I think ranger is a lot better than mc.

Grudging progress, I dislike math and it dislikes me, lol.

This may be one of the few times I would use the terminal instead of Synaptic. You can download the Snapshot package itself, then use apt-get install in terminal, and it will usually give you some details as to why something like this would happen, i.e. if there's conflicts between packages it will list them and then ask if you want proceed (obviously NO in this case, lol).

You may have to check in the repo, Devuan doesn't by default install all printer packages. I'm no printer expert as I never use one, so I use the system-config-printer app to help out, it's been very useful.

What a strange comment, why in the world would that offend me, or anyone for that matter? Did I offend you in some way with my comment? It wasn't targeted at you at all, it simply comes from a lifetime as an electrical and mechanical technician, and has to do with the importance of maintenance and not ignoring warning signs. Maintenance is always easier than repairs.

Turning into a tempest in a teacup here. OP have you checked your xset settings?  xset q will tell you if DPMS is disabled. xset +dpms to enable it.

For all it's PITA times, .xsession-errors is still a good way to learn what's mis-behaving in your system, that's why I don't disable it, instead I fix the things it complains about.

You can just delete the .xsession-errors file after you login, it will spawn a new one on re-boot, but not during a session. This is how golinux does it.

FYI mate has become somewhat infamous to those of us who tinker with it, for spamming xsession-errors, almost anything can cause it, sometimes it just doesn't like a theme or a particular app. A few months back a version of caja was so bad that if you just hovered over the xsession-errors file it would start rapidly filling up with even more garbage at the rate of a mb every couple seconds. I filed on that bug and to the debian-mate team's credit they fixed it in 24 hours, but it was bad.