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setup-arch
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master
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@ -3,7 +3,6 @@ languageCode = "en-gb"
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title = "netflux.io"
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theme = "minimal-bootstrap-hugo"
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staticDir = ["static"]
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enableEmoji = true
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[taxonomies]
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tag = "tags"
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@ -1,153 +0,0 @@
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---
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title: "Notes from a first ever Arch Linux installation"
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date: 2020-06-29T16:12:37+02:00
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draft: false
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tags: ["linux"]
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---
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After four years of using Ubuntu full-time on my laptop, I felt like dropping out of the Canonical feature churn and testing out a more lightweight Linux distribution. I probably spend 90% of my computer time in either a web browser or a terminal session, and I definitely don't need [Gnome](https://arstechnica.com/information-technology/2018/05/ubuntu-18-04-the-return-of-a-familiar-interface-marks-the-best-ubuntu-in-years/), [snapd](https://techtudor.blogspot.com/2020/06/four-reasons-why-snaps-are-anti-pattern.html), or any of the other Ubuntu bells or whistles to make this a comfortable experience.
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So I decided to dive in and give [Arch Linux](https://www.archlinux.org/) running [XFCE](https://xfce.org/) a try. So far I'm really liking the minimal approach and the opportunity to get a bit closer to the underlying operating system, although I can confirm that Arch features some of the annoyances of Ubuntu (spoiler: Bluetooth sucks in particular :confused:).
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Here are some notes.
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## Installation of Arch
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I start by flashing the [Arch ISO image](https://www.archlinux.org/download/) onto a USB drive, which then booted into Arch's live setup environment on my new box just fine.
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Arch comes without a graphical installer, so a command-line installation is unavoidable. [This gist](https://gist.github.com/rfwatson/f89fdf793f996e276878dec6f2cebc0b) contains the basic instructions to set up an encrypted Arch installation using LVM on an NVME machine.
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The [original Gist](https://gist.github.com/kylemanna/cde147d777d243b82a85e9ac16b85458) is updated frequently and worth checking too but at the time of writing is missing several essential packages from the `pacstrap` command, including `mkinitcpio`, `lvm2`, `dhcpcd` (seemingly essential to connect to the internet when booting from the newly-installed OS, see below) and `linux` (the Linux kernel, doh).
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## Rebooting and enabling networking
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Then I rebooted. Unfortunately it was immediately clear that no internet connection was available, despite it having worked fine in the live installation environment, and ethernet being physically connected.
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The problem was that `dhcpcd` hadn't been installed during the `pacstrap` phase, and starting the installation from scratch seemed the easiest option. After reinstalling with `dhcpcd` included, it was necessary to:
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```bash
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sudo systemctl enable dhcpcd
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sudo systemctl start dhcpcd
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sudo dhcpcd eno1 # check `ip a` for interface name
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```
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After this, the ethernet connection immediately became available.
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## Installing XFCE
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XFCE is a lightweight desktop environment for Unix-y machines. Installing is trivial:
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```bash
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sudo pacman -S xfce4 xfce4-goodies xorg
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```
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Making XFCE start automatically on boot required two config files ([source](https://www.reddit.com/r/archlinux/comments/atyzd4/trying_to_start_xfce4_on_boot/)).
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Firstly `$HOME/.xinitrc`:
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```bash
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#!/bin/bash
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exec startxfce4
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```
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and at the end of `.zshrc` (or `.bashrc`):
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```bash
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if [ $(tty) == "/dev/tty1" ]; then
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startx
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fi
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```
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Note: there's probably a better way to do this using systemd but I haven't figured it out yet.
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## Getting Bluetooth to work
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Firstly
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```bash
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sudo pacman -S bluez bluez-utils
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sudo systemctl enable bluetooth.service
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sudo systemctl start bluetooth.service
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```
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Then run `bluetoothctl` and use the following approximate sequence of steps:
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```
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power on
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agent on
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scan on
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pair <device ID>
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```
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Despite the underlying bluez implementation being identical, my first impressions of Bluetooth support on Arch were much better than Ubuntu and everything seemed to work just nicely. But unfortunately after a few days my Bluetooth mouse mysteriously decided to stop being detected as an input device despite seemingly being successfully paired. :scream:
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For now I'm falling back to a wired mouse and I'll update this blog if I figure out what's going wrong.
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## Install a web browser
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:shrug:
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```bash
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# and/or firefox-developer-edition
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sudo pacman -S firefox
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```
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## Getting hibernate to work
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Getting hibernation to work properly on Linux has been a source of much fun in the past and this time around was no exception.
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At first I experienced consistent instantaneous wakeup from hibernation. After checking `journalctl` this turned out to be caused by a PCI USB extension board that I'd damaged slightly while removing the internal packaging from the computer post-transit. After physically detaching this useless board completely from the machine, the instantaneous wakeup was fixed!
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However, the box still failed to resume from hibernation, sticking on a black screen shortly after the disk encryption password phase. This required a bit more tracking down, but further careful examination of `journalctl` revealed that the open source Nouveau drivers for NVIDIA graphics cards were spewing some suspicious logs during the hibernate phase. For example:
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```
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Jun 29 08:16:24 rob-arch kernel: ------------[ cut here ]------------
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Jun 29 08:16:24 rob-arch kernel: nouveau 0000:01:00.0: timeout
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Jun 29 08:16:24 rob-arch kernel: WARNING: CPU: 1 PID: 140 at drivers/gpu/drm/nouveau/nvkm/engine/disp/cursgv100.c:31 gv100_disp_curs_idle.isra.0+0xd7/0xf0 [nouveau]
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Jun 29 08:16:24 rob-arch kernel: Modules linked in: mousedev uhid rfcomm cfg80211 cmac algif_hash intel_rapl_msr algif_skcipher 8021q snd_sof_pci af_alg garp snd_sof_intel_byt mrp snd_sof_intel_ipc intel_rapl_common stp bnep llc snd_sof_intel_hda_common snd_soc_hdac_hda sn>
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Jun 29 08:16:24 rob-arch kernel: rfkill ecc cec apple_mfi_fastcharge snd_timer rc_core snd mei_me syscopyarea mei sysfillrect soundcore sysimgblt fb_sys_fops intel_pch_thermal ie31200_edac wmi evdev mac_hid drm crypto_user agpgart ip_tables x_tables hid_apple hid_generic >
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<snip>
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Jun 29 08:16:24 rob-arch kernel: Call Trace:
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Jun 29 08:16:24 rob-arch kernel: nvkm_object_init+0x3e/0x100 [nouveau]
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Jun 29 08:16:24 rob-arch kernel: nvkm_object_init+0x6f/0x100 [nouveau]
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Jun 29 08:16:24 rob-arch kernel: nvkm_object_init+0x6f/0x100 [nouveau]
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Jun 29 08:16:24 rob-arch kernel: nvkm_object_init+0x6f/0x100 [nouveau]
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Jun 29 08:16:24 rob-arch kernel: nvkm_object_init+0x6f/0x100 [nouveau]
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Jun 29 08:16:24 rob-arch kernel: nouveau_do_resume+0x29/0xd0 [nouveau]
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Jun 29 08:16:24 rob-arch kernel: nouveau_pmops_resume+0x60/0x90 [nouveau]
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Jun 29 08:16:24 rob-arch kernel: ? pci_legacy_resume+0x80/0x80
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```
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As with all software I would much prefer to choose the FOSS option for NVIDIA drivers if possible, but the convenience of working hibernation is too much of a pull so I did quick `sudo pacman -S nvidia` (see [here](https://wiki.archlinux.org/index.php/NVIDIA) for more details) and rebooted. This time, the box both hibernated and resumed successfully :tada:
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However, be warned that hibernation and Bluetooth also didn't play well together out of the box, and Bluetooth needed restarting manually after most resumptions. I suspect the right approach would be to add systemd hooks to either `bluetoothctl power off/on` or even unload the bluetooth module during the hibernate/resume cycle. However, I didn't bother to try this yet.
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### Slow mirrors
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It might be random but the Pacman mirrors chosen by my system were very slow (averaging 250k/s download speed for all packages).
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As per the [Arch Wiki](https://wiki.archlinux.org/index.php/Mirrors#List_by_speed), this can be fixed by installing the `pacman-contrib` package and then using the contained `rankmirrors` script:
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```bash
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# change country=ES to something appropriate:
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curl -s "https://www.archlinux.org/mirrorlist/?country=ES&protocol=https&use_mirror_status=on" | sed -e 's/^#Server/Server/' -e '/^#/d' | rankmirrors -n 5 -
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```
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The output of this command can be used to replace `/etc/pacman.d/mirrorlist` (backing it up first naturally). After doing this, package download speeds average several MB/s.
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### Pacman
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I was slightly intimidated by Pacman after becoming so comfortable with `apt-get` over the years, but I can confirm that it quickly becomes a friend. Better still, the package support is excellent and PPAs don't exist! For example `pacman -S docker-compose` works perfectly out of the box, with no need to install or manage PPA keys Ubuntu-style.
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### Other bits
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A handful of other softwares that I've installed so far:
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- vim
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- zsh
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- Docker and Docker Compose
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- [alacritty](https://github.com/alacritty/alacritty) (terminal emulator written in Rust with a strong community and lots of activity - so far fast and stable)
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- [asdf](https://asdf-vm.com/)
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@ -1 +1 @@
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rm -rf public/ && hugo && rsync -avz -e "ssh -p 7511" public rob@netflux.io:~/netflux-blog
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rm -rf public/ && hugo && rsync -avz public rob@www.rfwatson.net:~/netflux-blog
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