Add stuff from askiiart/pc-configs

docs/Miscellaneous/470-datacenter-drivers.md

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+# Nvidia 470 datacenter drivers
+
+**Note:** Desktop drivers and datacenter drivers are different.
+
+## Debian
+
+This hasn't yet been tested. If you have tested it, please open a PR to update this section.
+
+### Add apt repos
+
+**You can skip this if you already have the repositories enabled**
+To add the non-free and contrib repos, edit `/etc/apt/sources.list` and add `non-free contrib` to the end of each line, like this:
+
+```txt
+deb http://deb.debian.org/debian/ bullseye main non-free contrib
+deb-src http://deb.debian.org/debian/ bullseye main non-free contrib
+```
+
+Then, run `apt update`
+
+### Installation
+
+To install the driver:
+
+```sh
+apt install nvidia-tesla-470-driver
+```
+
+And to install CUDA:
+
+```bash
+apt install nvidia-cuda-dev nvidia-cuda-toolkit
+```
+
+### Links
+
+- [Driver Install Guide](https://wiki.debian.org/NvidiaGraphicsDrivers) ([Internet Archive Link](https://web.archive.org/web/20221123184836/https://wiki.debian.org/NvidiaGraphicsDrivers))
+
+## Fedora
+
+This guide uses the RPM Fusion repositories, and if you install CUDA, it uses Nvidia repositories as well. Note that this guide is only compatible with Fedora 35+, I'm not sure about RHEL versions.
+
+### Add RPM Fusion repository
+
+**You can skip this if you already have the repository installed.**
+
+To add the RPM Fusion repository:
+
+```bash
+# Add gpg key
+sudo dnf install distribution-gpg-keys
+sudo rpmkeys --import /usr/share/distribution-gpg-keys/rpmfusion/RPM-GPG-KEY-rpmfusion-free-fedora-$(rpm -E %fedora)
+# Add repo with gpg check
+sudo dnf --setopt=localpkg_gpgcheck=1 install https://mirrors.rpmfusion.org/free/fedora/rpmfusion-free-release-$(rpm -E %fedora).noarch.rpm
+```
+
+### Install Driver
+
+First, update everything, and reboot if you're not on the latest kernel.
+
+```bash
+dnf update -y
+```
+
+Then, install the driver:
+
+```bash
+dnf install akmod-nvidia-470xx
+```
+
+_**Do not reboot yet.**_
+
+Before rebooting, use `top` or `ps` to make sure there is no `akmods`, `cc*`, `kthreadd`, or `gcc*` process running (`*` is either nothing or a number)—or anything using tons of CPU that you don't expect.
+
+*Note:* `nvidia-smi` and other tools are not included with the driver. For that, you need to install CUDA.
+
+### Install CUDA
+
+Install packages needed for CUDA with:
+
+```bash
+export FEDORA_VERSION=$(rpm -E %fedora) # Nvidia's repo doesn't support Fedora 38 yet, so change this to 37 if you're on Fedora 38
+dnf config-manager --add-repo https://developer.download.nvidia.com/compute/cuda/repos/fedora35/x86_64/cuda-fedora${FEDORA_VERSION}.repo
+dnf clean all
+dnf module disable nvidia-driver
+dnf -y install cuda
+```
+
+*Note:* Don't re-enable `nvidia-driver`
+
+### Problems
+
+#### Suspend Issues
+
+I had issues with my K80 not working after being suspended. For example, `torch.cuda.is_available()` would give an error and return False, rather than saying True.
+To fix this, install `xorg-x11-drv-nvidia-470xx-power`
+
+```bash
+dnf install xorg-x11-drv-nvidia-470xx-power
+```
+
+---
+
+#### CUDA is higher version than driver
+
+Sometimes the driver in the CUDA repo, and therefore dependencies for CUDA are of a later version than the driver. To fix this, run:
+
+```bash
+dnf module enable nvidia-driver -y && dnf download cuda-drivers && dnf module disable nvidia-driver -y
+rpm -Uvh cuda-drivers*.rpm --nodeps
+dnf update
+```
+
+### More stuff
+
+Why not install `xorg-x11-drv-nvidia-470xx`?
+
+- That's the _display_ driver, not the data center driver. It is the same version number, but is not the same.
+
+### Links
+
+- [Repo Config](https://rpmfusion.org/Configuration) ([Internet Archive Link](https://web.archive.org/web/20221111180224/https://rpmfusion.org/Configuration))
+- [Verify Repo Signing Keys](https://rpmfusion.org/keys) ([Internet Archive Link](https://web.archive.org/web/20221111180744/https://rpmfusion.org/keys))
+- [NVIDIA Guide](https://rpmfusion.org/Howto/NVIDIA) ([Internet Archive Link](https://web.archive.org/web/20221111181211/https://rpmfusion.org/Howto/NVIDIA))
+- [CUDA Guide](https://rpmfusion.org/Howto/CUDA) ([Internet Archive Link](https://web.archive.org/web/20221111181243/https://rpmfusion.org/Howto/CUDA))

docs/Miscellaneous/b450m-ds3h-wifi-firmware.md

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+# Install Firmware
+
+## During Linux Installation
+
+When installing Linux, you may get an error like this:
+
+```
+Some of your hardware needs non-free firmware files to operate. The firmware can be loaded from removable media, such as a USB stick or floppy.
+
+The missing firmware files are: iwlwifi-3168-29.ucode iwlwifi-3168-28.ucode iwlwifi-3168-27.ucode iwlwifi-3168-26.ucode iwlwifi-3168-25.ucode iwlwifi-3168-24.ucode iwlwifi-3168-23.ucode iwlwifi-3168-22.ucode
+
+If you have such media available now, insert it, and continue.
+
+Load missing firmware from removable media?
+[ ] No
+[x] Yes
+```
+
+These are all actually just different versions of the one firmware file you need. Just get `iwlwifi-3168-29.ucode` from [here](iwlwifi-3168-29.ucode) or [here](/static/iwlwifi-3168-29.ucode), put it on another USB drive, then insert it and continue.
+
+## Post-Installation
+
+Get the firmware from [here](iwlwifi-3168-29.ucode), then move it to `/lib/firmware`, and restart.
+
+```bash
+sudo mv iwlwifi-3168-29.ucode /lib/firmware/
+reboot
+```

docs/Miscellaneous/mergerfs-snapraid-setup.md

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+# mergerfs + SnapRAID setup
+
+## mergerfs
+
+`/etc/fstab`:
+
+```txt
+# Data drives
+UUID=2eeb4386-e26e-4340-9747-74fb3d18dd57   /mnt/disk1  xfs           defaults 0 0
+UUID=e030fa2f-a9b4-4788-8d10-05cf5031f9c0   /mnt/disk2  xfs           defaults 0 0
+UUID=f9a79cef-3959-4aa8-a9c9-af54660cb755   /mnt/disk3  xfs           defaults 0 0
+UUID=c7283793-37c6-4b01-95e1-cca26af0da8f   /mnt/cache  btrfs         defaults 0 0
+UUID=8d8cb485-eb23-475b-a9c1-03b8309cdbaa   /mnt/parity xfs           defaults 0 0
+
+# mergerfs
+/mnt/disk1:/mnt/disk2:/mnt/disk3:/mnt/cache /mnt/user   fuse.mergerfs defaults,allow_other,use_ino,category.create=lfs,moveonenospc=true,minfreespace=512G,cache.files=partial,dropcacheonclose=true 0 0
+/mnt/disk1:/mnt/disk2:/mnt/disk3            /mnt/hdds   fuse.mergerfs defaults,allow_other,use_ino,category.create=mfs,moveonenospc=true,minfreespace=25M,cache.files=partial,dropcacheonclose=true  0 0```
+```
+
+Command equivalent to fstab mergerfs mounts:
+
+```txt
+mergerfs -o defaults,allow_other,use_ino,category.create=lfs,moveonenospc=true,minfreespace=512G,cache.files=partial,dropcacheonclose=true /mnt/disk1:/mnt/disk2:/mnt/disk3:/mnt/cache /mnt/user
+mergerfs -o defaults,allow_other,use_ino,category.create=mfs,moveonenospc=true,minfreespace=25M,cache.files=partial,dropcacheonclose=true /mnt/disk1:/mnt/disk2:/mnt/disk3 /mnt/hdds
+```
+
+## Caching and mover
+
+### Topology
+
+- `/mnt/user` - Combined mergerfs pool
+- `/mnt/hdds` - HDD-only mergerfs pool
+- `/mnt/cache` - cache mount point
+- `/mnt/disk*` - Each HDD, starting from 1. `/mnt/disk1`, `/mnt/disk2`, etc.
+
+### Mover script
+
+Stolen from [here](https://raw.githubusercontent.com/trapexit/mergerfs/latest-release/tools/mergerfs.time-based-mover)
+
+It moves anything that hasn't been access in more than 3 days.
+
+Requires `rsync` - install with `apt update && apt install rsync`
+
+```sh
+#!/usr/bin/env sh
+
+if [ $# != 3 ]; then
+  echo "usage: $0 <cache-fs> <backing-pool> <days-old>"
+  exit 1
+fi
+
+CACHE="${1}"
+BACKING="${2}"
+N=${3}
+
+find "${CACHE}" -type f -atime +${N} -printf '%P\n' | \
+  rsync --files-from=- -axqHAXWES --preallocate --remove-source-files "${CACHE}/" "${BACKING}/"
+```
+
+Located at `/root/mergerfs.time-based-mover.sh`, runs daily at 4 AM:
+
+```cron
+0 4 * * * /root/mergerfs.time-based-mover.sh /mnt/cache /mnt/hdds 3
+```
+
+## SnapRAID
+
+### `/etc/snapraid.conf`
+
+The list of files is stored on multiple disks in `snapraid.content`, and the parity is just one file (`snapraid.parity`)
+
+```txt
+parity /mnt/parity/snapraid.parity
+content /var/snapraid/snapraid.content
+content /mnt/disk1/snapraid.content
+content /mnt/disk2/snapraid.content
+content /mnt/disk3/snapraid.content
+data d1 /mnt/disk1/
+data d2 /mnt/disk2/
+data d3 /mnt/disk3/
+```
+
+### Syncing
+
+Run daily at 2 AM (`/etc/cron.d/snapraid-sync`):
+
+```cron
+* 02 * * * /root/snapraid-sync.sh
+```
+
+`/root/snapraid-sync.sh`:
+
+```sh
+#!/usr/bin/env sh
+CONTAINERS=$(docker ps -q)
+docker stop $CONTAINERS
+snapraid sync
+docker start $CONTAINERS
+```

docs/Miscellaneous/mount-drive-on-boot.md

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+# Mount Drive On Boot
+
+To mount a drive on boot, first find the UUID of the drive:
+
+```bash
+sudo blkid
+```
+
+Then add the following to `/etc/fstab`:
+
+```conf
+UUID=<UUID_OF_DRIVE> /mnt/big-stuff  ext4    defaults
+```
+
+For example, for my big drive (4TB Toshiba X300 Performance):
+
+```conf
+# big-stuff
+UUID=d68f1a75-af20-4627-8382-7198c3a34b5d /mnt/big-stuff  ext4    defaults
+```

docs/Miscellaneous/spice-guest-tools.md

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+# Spice Guest Tools
+
+These are the software packages for the guest OS that provide stuff like copy-paste, shared folders, graphics drivers, etc. They're not required, but are quite useful (and tiny!)
+
+## Windows
+
+The download is [here](https://www.spice-space.org/download/windows/spice-guest-tools/spice-guest-tools-latest.exe), it's easy. Just install it and restart.
+
+## Linux
+
+Linux guests use the packages `spice-vdagent` (for copy-paste, shared folders, etc.) and `xf86-video-qxl` (for graphics drivers) (or `xf86-video-qxl-devel` if you're building from source, according to GitHub copilot, IDK). The `spice-vdagent` package is available in most distributions' repositories, but the `xf86-video-qxl` package is not. You can build it from source (download [here](https://www.spice-space.org/download.html)).
+
+## macOS
+
+No. Maybe the Linux ones would work, IDK. I don't feel like testing it. Check out [this](https://github.com/utmapp/UTM/discussions/3772) and [this](https://docs.getutm.app/).