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# Topics
## Solutions I found while fiddeling with tech stuff predominantly concerning linux
### Hardware related problems

#### Printers and Scanners
 * [brother QL-500 Label Printer](:brotherQL500) (en)
   * [Briefmarken der Deutsche Post drucken](:BriefmarkenDrucken) (de)
   * [Paketmarken umwandlen für den QL-500](:BriefmarkenDrucken#Paketmarken) (de)

#### Smartphones
##### OnePlus A3003
 * [Never! Really: Never! try to update device directly from Updater again!](:OnePlusA3003) (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!](:IriunWebcam) (en)
 * [Use a loopback cam to put filters into stream](:v4l2loopback) like e.g. green screen. (en)

#### Webcams
##### Logitech c270
 * [How I made my c270 webcam finally show something else than a white screen](:LogiC270) (en)

### Software related problems

#### ikiwiki
 * [If you can't create a wiki or a blog ...](https://discuss.freedombox.org/t/partially-solved-cannot-create-blog-in-ikiwiki/756) (en)

####  apache2
 * [HowTo setup a reverse proxy for a subpath](:Apache2ReverseProxy) (en)
 * [HowTo setup a reverse proxy for a subdomain](:Apache2ReverseProxy#To_a_Subdomain) (en)

#### dino.im / Gnome Apps
 * [HowTo use emojis in Gnome applications like dino.im](:EmojisInDinoIM) (en)

#### duplicity
 * [HowTo prevent duplicity from locking you out by caching on root device](:DuplicityCache) (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](:XMPPVideoCallsNoSymbol) (en)

### Docker related problems

#### Funkwhale
 * [HowTo let streaming work with a ReverseProxy on a seperate machine](: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](:HowTo_deploy_synapse_with_multiple_workers) (en)
 * [HowTo switch a synapse instance from sqlite3 to postgres usage](:HowTo_switch_synapse_from_sqlite3_to_postgres) (en)

#### Own Docker Images
 * [HowTo build an own docker image for my python experiments](:HowTo_build_an_own_docker_image) (en)

#### Synology DS as Host System
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  * [[HowTo source env on a Synology]] (en)

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##### Collabora CODE
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  * [[howto_get_collabora_to_work_with_nextcloud_on_a_synology_ds|HowTo get Collabora to work with Nextcloud on a Synology DS]] (en)
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##### Unprivileged User for Running _docker_
  * [HowTo use a unprivileged user for running docker containers](https://www.natarajmb.com/2022/01/docker-synology/) ([2nd source](https://davejansen.com/manage-docker-without-needing-sudo-on-your-synology-nas/)) (en) 
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  * [[Hassle with Rootless Docker on a Debian Bookworm Based RaspberryPi 4b]] (de)
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##### Home Assistant
###### Shelly Devices
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  * [[howto_get_shelly_devices_working|HowTo get Shelly Home Automation Devices working properly]] (en)
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##### ntfy
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  * [[how_uid_gid_cost_me_hours_while_trying_to_self_host_ntfy|How UID:GID of a Docker Container cost me Hours while setting up ntfy with NGINX Proxy Manager]]

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### Operating System related problems

#### Ubuntu 18.04
##### Booting problems
* [HowTo Fix the boot sequence after restore of system on new device](:BootUbuntuAfterRestore) (en)

#### Ubuntu 20.04
##### Booting problems
* [HowTo Deal with the "failed to reset device" delay of booting sequence on Thinkpad with TouchScreen](:TouchScreenDelayThinkpad) (en)
##### Sound problems
* [What to do if your sound settings only show a dummy device](:SoundUbuntuOnlyDummyDevice) (en)

#### Ubuntu 24.04
##### Network problems with MacMini (2012, x86)
* [HowTo Fix spontaneously stopping network making Ubuntu Server unreachable](:MacMiniUbuntuNetworkFix) (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`.
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