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Category Archives: Technical
Is it still possible to use an old 30-inch Apple Cinema Display with modern Macs?
Yes — Apple Cinema Displays from the 2000s (the aluminum ones with massive DVI cables) are still perfectly usable with modern Macs from the 2020s via USB-C. However, for the 30-inch model, you’ll need a slightly clunkier cable setup.
A trick to change card currency in PayPal when there’s no “Update” button
In PayPal, if you’d like to change card currency setting but the “Change” button is missing: The trick is to append /update-currency/ to the page URL and hit Enter.
How to change the order of your names on Facebook today?
This blog is a collection of my technical notes from working with information systems, not intended for the general public. However, Facebook’s user interface has become so convoluted that even simple tasks require a bit of technical knowledge and patience. … Continue reading
A trick to prevent Cyberduck from asking for a client certificate on macOS
Problem: Cyberduck on macOS will repeatedly prompt you to present a client certificate when making an FTP-SSL connection to certain servers (e.g. Synology). This issue arises if your macOS Keychain contains at least one personal certificate. If the server connection … Continue reading
Authentik: set custom username for OAuth application (e.g. for Apache Guacamole) via a property mapping
If you use Authentik (https://goauthentik.io/) as an OAuth authentication provider for your Apache Guacamole (https://guacamole.apache.org/) instance and you’d like to customize usernames for Guacamole, here’s how you can achieve this. The steps described below may work for other applications, wired … Continue reading
Guacamole 1.4: “Creation of WebSocket tunnel to guacd failed”
Problem: Guacamole 1.4 shows “internal error” when making any connection and in /var/log/tomcat9/catalina.out you see something like:
Guacamole 1.4: “Log in failed” for RDP connections
Problem (Guacamole 1.4 while connecting to an RDP server): …and in logs:
Serving acme-challenges from two web-servers sharing the same domain via nginx
Say you have nginx listening on port 80 and sharing a domain with another web-server (e.g. Proxmox web-server) that is listening on a different port, and you want to route HTTP-01 (“acme-challenge”) requests to that second web-server.
Confluence: broken links and macros after migrating Postgres database
Problem: after migrating Atlassian Confluence PostgreSQL database to another server, you’re seeing lots of broken links (in red color) and some navigation macros not working properly (showing errors such as “page not found”). The first thing Atlassian themselves and their … Continue reading
Zola + Vite demo
How to neatly wire up Zola (static site generator) with Vite (frontend build tool) without special plugins (a minimal demo).