TechAdmin
I'd recommend using distro you know best and/or most prefer to work with. I use the flatpak install of Jellyfin Media Player but there are also deb files available.
I'm currently using minipc with Intel n5105 (or something similar) for 1080p HTPC. Debian 12 OS with auto-login & Jellyfin Media Player starting at login. I control it with pepper jobs RF remote but also have a logitech wireless keyboard+touchpad for it. Keyboard+touchpad come in handy when browsing media sites on firefox but some might restrict quality. Some of the newer minipc's I tried required adding backports repo to install newer kernel for wifi to work. I had been playing with Debian a lot when I set up first one & been using clonezilla to image them so it's stuck.
Ordered a gmtek n97 minipc to play with and should have it in about a week. Going to test it out with 4k but it's not a deal breaker for me if it cannot handle that well enough.
Yep, asking for something I'm sure a lot of us would love to have, a ready to go TV remote control style usage, but rather than having discussions about why those options aren't viable just downvoting.
Create a backup image from the working SD card. Write that backup image to a spare SD card and verify it works. Then try to do 'apt update' and see if anything breaks. If it breaks you got a spare SD card ready to go :)
I had issues with DNS checks and traced it to my pihole. I changed that container's resolv.conf to use cloudflare DNS and it has been working fine since. It was with Caddy so needed to change over to use IPs.
Another thing to remember is the client needs to support decoding the video in hardware or have enough CPU to handle it in software. I have intel i7 (3rd gen) with no hardware HEVC/x265 support but it has enough CPU to power through.
For steamdeck on the couch something like the xreal or rokid would be better. Some people have been able to make VR work with steamdeck with bad performance but they only tried VR games so don't know how it would be with regular games.
I bought a pair when they were still going by NReal name and they worked well with steam deck and my laptop. Battery life would last longer with only the glasses on. I didn't like always having to wear contacts so picked up a pair of Rokid's glasses too. Those have built in diopters and have been working well.
Self-host your own ACME server. Then you can use certbot pointed there.
These instructions are old so not sure if newer/better ways, https://blog.sean-wright.com/self-host-acme-server/
Is MariaDB on spinning disk or ssd?
I initially set up Nextcloud with MariaDB on spinning disk but it was slow even completely empty. I moved that container to ssd & performance was a lot better. The web UI may still have some slow loading parts but I can't say for sure since rarely use it. Caldav+carddav+Nextcloud client are how I usually interact with it.
They still build recommendations even if you're not logged in, you can see them in the sidebar after you load a video. Imo they only removed them from the homepage to try convincing people to log in or create account, it's all about increasing user numbers, ad engagement, and data collection these days.
Sounds like bridge mode is needed for the vm's network interface in virt.
I would say proxmox ve is easier to start with.
You can try seeing if you can set the speed/duplex of NIC/ports manually if auto-detection keeps getting it wrong.
Unifi I like the APs for mesh & multiple SSID+vlans but I keep them on dedicated vlan with zero internet access because I don't trust that I properly followed instructions to disable opted in analytics/telemetry. The mgmt software is alright but new UI wastes a lot of space. The PoE switch was alright until it stopped being able to keep a config last year. USG router I kept less than a year because it was too slow with any useful features enabled. I've glanced around at replacement APs here & there but pretty much waiting until I have more wifi 7 compatible devices and that'll be another couple years.