Now I have also tried from an virtual ubuntu dekstop. This renders the same error as the IRL debian workstation. Same error regardless if the proxy environmental variables are set or not, so either they are ignored, set in the the wrong place or unrelated to the problem.
it's worth noting that if you want obsidian to show up in application launcher like Rofi you'll need to create a .desktop file in your user's /.local/share/applications directory. As an example, this is what I have for my Apache Directory Studio:
The first time you start Obsidian, the only existing Vault is the one that contains all the program documentation. To browse its content, click on the question mark button in the lower left corner. Each Vault you create is independent from the other Vaults, meaning that you cannot link notes across Vaults. For the same reason, each Vault gets its own, separate configuration that defines everything from which plugins it can use, to visual settings like background color and graphic theme. All this data is stored in the .obsidian subfolder inside the Vault itself.
The Obsidian documentation says that this "per-Vault" configuration "is useful, for example, if you have one Vault where you keep notes but a different one in which you do long-form writing." That makes a lot of sense, not to mention that fully self-contained Vaults are completely portable from one computer to another. Personally, however, I found it a bit annoying that it seems impossible, from the graphical interface, to import all the customizations already applied to an existing Vault into a new one. The quickest way to do that seems to be to just copy the .obsidian folder from the old Vault to the new one and then restart Obsidian to load those settings.
Obsidian on Windows and Debian has proven to be the most reliable markdown editor I have tried (and the most customisable). It creates an .obsidian folder which stores all the various customisations and by default all devices will sync to that folder (so that changes on one device will affect the other devices). Notably, Obsidian seems to be extremely reliable in its file handling (Ghostwriter threw up frequent messages when dealing with NAS files and Typora had issues as well). The code base on Android also seems to be a near exact duplicate of the desktop. Once you learn Obsidian on the desktop it is almost exactly the same on Android.
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