Topics

Solutions I found while fiddeling with tech stuff predominantly concerning linux

Hardware related problems

Printers and Scanners

• brother QL-500 Label Printer (en)

  • Briefmarken der Deutsche Post drucken (de)
  • Paketmarken umwandlen für den QL-500 (de)

Smartphones

OnePlus A3003

• Never! Really: Never! try to update device directly from Updater again! (en)

Android phones as webcam

No webcams to purchase anymore as pandemia forces the masses to home office? Even some phones with minor flaws in your drawer?

• Use your Android phone as webcam with Iriun app! (en)
• Use a loopback cam to put filters into stream like e.g. green screen. (en)

Webcams

Logitech c270

• How I made my c270 webcam finally show something else than a white screen (en)

Software related problems

ikiwiki

• If you can't create a wiki or a blog ... (en)

apache2

• HowTo setup a reverse proxy for a subpath (en)
• HowTo setup a reverse proxy for a subdomain (en)

dino.im / Gnome Apps

• HowTo use emojis in Gnome applications like dino.im (en)

duplicity

• HowTo prevent duplicity from locking you out by caching on root device (en)

Conversations / PixArt / Blabber.im (Android-XMPP-Clients)

• Why you don't get a phone symbol despite your server is correctly configured for Video/Audio-Calls (en)

Docker related problems

Funkwhale

• HowTo let streaming work with a ReverseProxy on a seperate machine (en)

Synapse (Matrix homeserver)

• HowTo deploy synapse with multiple workers to cope with federation (en)
• HowTo switch a synapse instance from sqlite3 to postgres usage (en)

Own Docker Images

• HowTo build an own docker image for my python experiments (en)

Synology DS as Host System

• HowTo source env on a Synology (en)

Collabora CODE

• HowTo get Collabora to work with Nextcloud on a Synology DS (en)

Unprivileged User for Running

• HowTo use a unprivileged user for running docker containers (2nd source) (en)

• Hassle with Rootless Docker on a Debian Bookworm Based RaspberryPi 4b (de)

Home Assistant

Shelly Devices

• HowTo get Shelly Home Automation Devices working properly (en)

ntfy

• How UID:GID of a Docker Container cost me Hours while setting up ntfy with NGINX Proxy Manager

Operating System related problems

Ubuntu 18.04

Booting problems

• HowTo Fix the boot sequence after restore of system on new device (en)

Ubuntu 20.04

Booting problems

• HowTo Deal with the "failed to reset device" delay of booting sequence on Thinkpad with TouchScreen (en)

  Sound problems

• What to do if your sound settings only show a dummy device (en)

Ubuntu 24.04

Network problems with MacMini (2012, x86)

• HowTo Fix spontaneously stopping network making Ubuntu Server unreachable (en)

To get a pretty presentation of your gathered system information in terminal just install neofetch on your Linux. Any other system data is easy to fetch with inxi.