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diff --git a/guides/setups/operating-systems/debian.org b/guides/setups/operating-systems/debian.org
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-* Installation
-** Step-by-step recap (Bullseye)
-*** Setup keyboard
-Turn CapsLock key into Control (cf. keyboard(5)):
-- add =ctrl:nocaps= to =XKBOPTIONS= in =/etc/default/keyboard=
-- run =udevadm trigger --subsystem-match=input --action=change=
-- run =setupcon= in a TTY
-*** Install stuff
-**** Distro-provided packages
-#+begin_src sh
-packages=(
-    # To clone & update dotfiles.
-    git
-    # Look & feel.
-    elementary-xfce-icon-theme greybird-gtk-theme
-    # Enable volume management with Thunar.
-    gvfs-backends gvfs-fuse
-    # System monitoring.
-    htop powertop wavemon
-    # Documentation:
-    # - info pages,
-    gcc-doc make-doc tar-doc info
-    # - manpages,
-    manpages-dev manpages-posix manpages-posix-dev
-    # - text & HTML pages.
-    git-doc python3-doc
-    # Writing helpers.
-    aspell-fr verbiste wordnet
-    # CLI helpers.
-    mlocate ripgrep vim
-    # Fonts.
-    fonts-noto-color-emoji
-    # Miscellaneous applications.
-    ffmpeg gimp pandoc terminator vlc
-)
-sudo apt install ${packages[@]}
-#+end_src
-**** Latest and greatest
-***** Firefox
-- download most recent release from from <https://www.mozilla.org>
-- unpack it =$SOMEWHERE=
-- make sure everyone can find it:
-
-#+begin_src sh
-$ sudo update-alternatives --install $(which x-www-browser) x-www-browser \
-                           ${SOMEWHERE}/firefox/firefox 1
-$ sudo update-alternatives --set x-www-browser ${SOMEWHERE}/firefox/firefox
-$ ln -s ${SOMEWHERE}/firefox/firefox ~/.local/bin/
-#+end_src
-
-- paste backuped profile into =~/.mozilla/firefox/${profile}=
-***** Symbola
-- grab the archive from <http://users.teilar.gr/~g1951d/>
-- drop the TTF files in =~/.local/share/fonts=
-- run =fc-cache -fv=
-***** youtube-dl
-#+begin_src sh
-$ sudo apt install python3-pip
-$ pip3 install --user youtube-dl
-#+end_src
-*** Setup dotfiles
-**** Clone versioned dotfiles
-- create new SSH key for GitLab
-- follow instructions in dotfiles README
-**** Tweak non-versioned dotfiles
-- set EMAIL in =.profile=
-- add =~/.local/bin= to PATH
-- copy =.profile= to =.xsessionrc=
-- in =.bashrc=
-  - enable globstar and autocd
-  - uncomment grep and ls aliases
-  - source =~/.bash_prompt=
-*** Setup Emacs
-- clone from Savannah
-- =apt build-dep emacs=
-- =apt install libgconf2-dev libwebkit2gtk-4.0-dev=
-  (optional build dependencies for ≥27)
-- comment out .emacs below =(load custom-file)=
-#+begin_src elisp
-(package-refresh-contents)
-(package-install-selected-packages)
-#+end_src
-*** Setup XFCE
-**** Appearance
-***** Style
-Greybird-dark
-***** Icons
-elementary Xfce darker
-***** Fonts
-- Rendering
-  - [X] Enable anti-aliasing
-  - Hinting: Slight
-  - Sub-pixel order: RGB (trusting the [[http://www.lagom.nl/lcd-test/subpixel.php][Lagom LCD test pages]])
-**** File Manager
-***** View
-- Side Pane: Tree
-- View as Detailed List
-**** Panel
-***** Top panel
-****** Items
-******* Whisker Menu
-******* Window Buttons
-******* Separator
-******* Workspace Switcher
-******* Separator
-******* Status Tray Plugin
-******* PulseAudio Plugin
-******* Power Manager Plugin
-- Show label: None
-******* Notification Plugin
-******* Separator
-******* Clock
-***** Bottom panel
-Delete.
-**** Window Manager
-***** Keyboard
-- Move window to previous workspace: Shift+Super+Left
-- Move window to next workspace: Shift+Super+Right
-- Tile window to the left: Super+Left
-- Tile window to the right: Super+Right
-- Show desktop: Super+D
-**** Window Manager Tweaks
-***** Accessibility
-- [X] Hide title of windows when maximized
-***** Compositor
-- [ ] Show shadows under…
-**** Terminal
-***** General
-- Scrolling
-  - [ ] Scroll on output
-  - Scrollbar is: Disabled
-  - [X] Unlimited scrollback
-***** Appearance
-- Font
-  - [X] Use system font
-- Opening New Windows
-  - [ ] Display menubar in new windows
-***** Advanced
-- Shortcuts
-  - [X] Disable all menu access keys (such as Alt+f) /for readline/
-  - [X] Disable menu shortcut key (F10 by default) /for htop &
-        wavemon/
-  - [X] Disable help window shortcut key (F1 by default) /for htop &
-        wavemon/
-- Misc
-  - [X] Automatically copy selection to clipboard
-**** Keyboard
-***** Application shortcuts
-- emacs: Super+E
-- exo-open --launch FileManager: Super+F
-- exo-open --launch TerminalEmulator: Super+T
-- exo-open --launch WebBrowser: Super+W
-- xfce4-popup-whiskermenu: Alt+F1
-- xfce4-screenshooter: Print
-- xfce4-screenshooter --fullscreen: Shift+Print
-- xfce4-screenshooter --region: Control+Print
-- xfce4-screenshooter --window: Super+Print
-- xfce4-session-logout: Super+X
-- xflock4: Super+L
-**** Mouse and Touchpad
-***** Devices
-- =… Touchpad=
-  - Touchpad
-    - [X] Tap touchpad to click
-**** Power Manager
-***** System
-- On battery / Plugged in
-  - When laptop lid is closed: Suspend
-**** Removable Drives and Media
-***** Storage
-- [X] Mount removable drives when hot-plugged
-- [X] Mount removable media when inserted
-
-*** Setup more stuff
-**** lightdm
-Show my account on startup:
-#+begin_src conf
-# /usr/share/lightdm/lightdm.conf.d/99_custom.conf
-[Seat:*]
-greeter-hide-users=false
-#+end_src
-**** system groups
-#+begin_src sh
-groups=(
-    adm         # Access /var/log journals.
-    dialout     # Sync my phone.
-)
-for g in ${groups[@]}
-do
-    sudo adduser ${USER} ${g}
-done
-#+end_src
-** Live reactions
-*** Samsung NC10 (Buster)
-**** installer
-Touchpad is not recognized, for some reason.
-**** first boot
-#+BEGIN_QUOTE
-A start job is running for Load AppArmor profiles
-#+END_QUOTE
-Disappeared after ≈30s 🤷
-
-Wooh touchpad works!  Although the sensitivity is a bit low.
-*NB: solved below.*
-
-Wifi LED is on, whatever that means.
-
-Brightness function keys do not work on the login screen.
-
-Using default XFCE config to get four workspaces.
-
-Brightness and sound function keys work! 🙌
-
-Touchpad click and scroll do not work.
-*NB: solved below.*
-
-Wifi function key does not work.
-
-Battery life seems somewhat shorter than with Bunsenlabs, even after
-applying all powertop tricks in the book.
-**** apt install (1/n)
-git greybird-gtk-theme elementary-xfce-icon-theme emacs
-
-git suggests git-doc: why of course, good idea!
-
-emacs suggests emacs-common-non-dfsg: right, what was that again?
-Documentation, IIRC?  What does APT have to say?
-
-#+BEGIN_EXAMPLE
-$ apt show emacs-common-non-dfsg
-Package: emacs-common-non-dfsg
-State: not a real package (virtual)
-N: Can't select candidate version from package emacs-common-non-dfsg as it has no candidate
-N: Can't select versions from package 'emacs-common-non-dfsg' as it is purely virtual
-N: No packages found
-#+END_EXAMPLE
-
-… What does https://packages.debian.org/emacs-common-non-dfsg say?
-
-#+BEGIN_QUOTE
-*[non-free]*
-#+END_QUOTE
-
-[[https://www.debian.org/vote/2006/vote_001][Oh.]]  Well then,
-
-#+begin_src sh
-$ sudo sed -ri 's/^([^#].+ main)$/\1 contrib non-free/' /etc/apt/sources.list
-$ # While in there…
-$ sudo sed -ri 's/^(deb|deb-src) http:/\1 https:/' /etc/apt/sources.list
-#+end_src
-
-What now?
-
-#+BEGIN_EXAMPLE
-$ sudo apt update
-[…]
-Err:4 https://security.debian.org/debian-security buster/updates Release
-  Certificate verification failed: The certificate is NOT trusted. The certificate issuer is unknown. The name in the certificate does not match the expected.  Could not handshake: Error in the certificate verification. [IP: 217.196.149.233 443]
-[…]
-E: The repository 'https://security.debian.org/debian-security buster/updates Release' no longer has a Release file.
-N: Updating from such a repository can't be done securely, and is therefore disabled by default.
-N: See apt-secure(8) manpage for repository creation and user configuration details.
-#+END_EXAMPLE
-
-🤨
-
-#+begin_src sh
-$ sudo sed -ri 's/security\.debian\.org/deb.debian.org/' /etc/apt/sources.list
-#+end_src
-
-[[https://wiki.debian.org/SourcesList#Example_sources.list][🤷]]
-
-**** tweak dotfiles
-Set EMAIL in .profile; copy .profile to .xsessionrc (AFAICT XFCE does
-not read ~/.config/environment.d) to get PATHs.
-
-In .bashrc, enable globstar and autocd, uncomment grep and ls aliases,
-source personal .bash_prompt.
-
-Fun fact!  git can guess user.email from $EMAIL and user.name from the
-[[https://en.wikipedia.org/wiki/Gecos_field][GECOS field]].
-**** apt install (2/n)
-#+BEGIN_QUOTE
-E: Package 'gcc-doc' has no installation candidate
-#+END_QUOTE
-gcc-doc is only available in /backports/?
-**** configure XFCE
-***** Mouse and Touchpad
-- Move sliders a bit to no avail, restore defaults.
-- Google around.
-- Why do my XFCE settings not have this "Touchpad" tab?
-- apt install xserver-xorg-input-synaptics
-- Log out and in again.
-- Woah the pointer is much faster now.
-- And the "Touchpad" tab is here now!
-🎉
-***** Panels
-Remove bottom panel: I'd rather remember a few Super-… shortcuts to
-launch these applications rather than waste all this vertical space.
-***** Appearance
-****** Style
-Greybird
-
-Patch the xfwm-tabwin style to prevent the mouse from screwing with
-Alt-Tab:
-
-#+begin_src diff
-diff -u /usr/share/themes/Greybird/gtk-2.0/gtkrc.bkp /usr/share/themes/Greybird/gtk-2.0/gtkrc
---- /usr/share/themes/Greybird/gtk-2.0/gtkrc.bkp
-+++ /usr/share/themes/Greybird/gtk-2.0/gtkrc
-@@ -897,8 +897,8 @@
- 
- 	bg[NORMAL]	= shade (0.15, @text_color)
- 	bg[ACTIVE]	= shade (0.65, @selected_bg_color)
--	bg[PRELIGHT]	= shade (0.75, @selected_bg_color)
--	bg[SELECTED]	= shade (0.55, @bg_color)
-+	bg[PRELIGHT]	= shade (0.55, @bg_color)
-+	bg[SELECTED]	= shade (0.75, @selected_bg_color)
- 
- 	fg[NORMAL]	= shade (0.8, @base_color)
- 	fg[ACTIVE]	= @base_color
-#+end_src
-**** configure more stuff
-***** lightdm
-Debian [[https://wiki.debian.org/LightDM#Enable_user_list][hides the list of users]] on the login screen; Bunsenlabs [[https://github.com/BunsenLabs/bunsen-configs/blob/9.6-1/lightdm.conf.d/50_bunsen.conf][enables
-it]] and I kind of like it (fewer keystrokes, and a cute avatar).
-*** Dell 3190 (Buster)
-**** groundwork
-Using instructions from <https://wiki.debian.org/Firmware>.
-***** Get netinst image from <https://www.debian.org/CD/netinst/>
-***** Get firmware archive from <https://cdimage.debian.org/cdimage/unofficial/non-free/firmware/stable/current/>
-So that the installer can use the wireless network card.  Extract all
-.deb files to a top-level =firmware= folder on a USB key.
-***** Shrink the MS partition
-Had to "optimize the disk", otherwise some free space remained
-unavailable.
-**** installer
-Everything went smoothly:
-- if the USB key holding the firmware isn't plugged in, the installer
-  requests it, otherwise it finds the firmware automatically;
-- Secure Boot supported transparently;
-- dual-booting too.
-**** package repositories
-Non-free repositories automatically added during the installation,
-because of the WiFi firmware I presume.
-**** kernel issues
-***** i915/glk_dmc_ver1_04.bin
-kern.log:
-#+begin_quote
-i915 0000:00:02.0: firmware: failed to load i915/glk_dmc_ver1_04.bin (-2)
-#+end_quote
-apt install firmware-misc-nonfree seems to quiet that down.
-***** i2c_hid_get_input: incomplete report
-kern.log:
-#+begin_quote
-i2c_hid i2c-MSFT0001:00: i2c_hid_get_input: incomplete report (14/65535)
-#+end_quote
-About one message for every half-second spent touching the touchpad.
-
-"Solved" with:
-#+begin_src sh
-$ apt install -t buster-backports \
-      linux-image-amd64           \
-      firmware-iwlwifi            \
-      firmware-misc-nonfree
-#+end_src
-* Maintenance
-** upgrades
-*** Bookworm
-**** research
-***** [[https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.en.html#non-free-split][Release notes § Issues to be aware of]]
-****** minutiae
-- ~sed s/non-free/non-free-firmware/~
-- =youtube-dl= ⇒ =yt-dlp=
-- clear =GRUB_DISABLE_OS_PROBER=
-****** System logs ([[https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.en.html#changes-to-system-logging][ref]])
-1. ~apt-mark auto rsyslog ; apt autoremove~
-2. double-check that journalctl config saves to persistent storage
-3. finally learn ~journalctl~
-****** Reduced accessibility from GTK 3⇒4 transition ([[https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.en.html#gnome-has-reduced-accessibility-support-for-screen-readers][ref]])
-Not a huge deal for me (though [[https://github.com/transmission/transmission/discussions/5065][other aspects]] of the transition are
-irksome), but [[https://tech.lgbt/@xogium/110507457689374019][dang]].
-****** "Externally-managed" Python installation ([[https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.en.html#python3-pep-668][ref]])
-1. inventory & clear out stuff installed with ~pip install --user~
-2. upgrade
-3. install =pipx=
-4. reinstall
-****** VLC support for VA-API disabled ([[https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.en.html#vlc-ffmpeg-5][ref]])
-- [[https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1021601][Debian bug#1021601]] =vlc: VAAPI hardware acceleration no more available=
-- [[https://code.videolan.org/videolan/vlc/-/issues/26772][VLC#26772]] =VAAPI is disabled with ffmpeg5 on vlc-3x=
-  - "we won't support full FFmpeg5 in 3.0" ([[https://code.videolan.org/videolan/vlc/-/issues/26772#note_316827][ref]])
-- [[https://code.videolan.org/videolan/vlc/-/merge_requests/1245][VLC!1245]] =[VLC3] Support FFmpeg 5.0 (except for VAAPI)=
-  - "it seems that the VAAPI part is far from trivial and requires
-    invasive changes (contrary to the other fixes)" ([[https://code.videolan.org/videolan/vlc/-/merge_requests/1245#note_302474][ref]])
-- user reports: [[https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1021664][2022-10]], [[https://old.reddit.com/r/debian/comments/z5ectb/vlc_delaying_frames_on_a_fresh_debian_12_install/][2022-11]], [[https://old.reddit.com/r/debian/comments/119x7tr/debian_12_bookworm_no_hw_acceleration_in_vlc_h264/][2023-02]], [[https://old.reddit.com/r/debian/comments/14u38mm/video_choppy_in_vlc_but_not_totem/][2023-07]]
-
-No idea how much that will affect little =hirondell=.  If push comes
-to shove, I guess I can either
-- build VLC 4,
-- learn mpv.
-****** systemd naming for Xen network interfaces ([[https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.en.html#xen-network][ref]])
-=eth0= changes to =enX0=.  No idea if my VPS is impacted or not; it
-does have an interface named =eth0=, and that name also shows up in
-=/etc/network/interfaces=.
-****** Known severe bugs ([[https://www.debian.org/releases/bookworm/amd64/release-notes/ch-information.en.html#rc-bugs][ref]])
-- [[https://bugs.debian.org/1036041][bug#1036041]]: =upgrade-reports: Dell XPS 9550 fails to boot after
-  bullseye to bookworm upgrade - grub/bios interaction bug?=
-**** VPS
-***** =/etc/cloud/cloud.cfg=
-My local version has these two lines:
-#+begin_src
-mount_default_fields: [~, ~, 'auto', 'defaults,nofail', '0', '2']
-manage_etc_hosts: true
-#+end_src
-No idea if this is OVH-specific.  No idea if I want them.  Let's trust
-"the package maintainer" 😐
-***** =/etc/ssh/sshd_config=
-OK, note to self: *never* choose "do a 3-way merge".  Thought that
-would be something along the lines of Emacs's Ediff; instead…
-#+begin_quote
-Merging changes into the new version
-#+end_quote
-/Mind giving a couple more details on that "merge" mate?/
-
-OK,
-
-- =/usr/share/openssh/sshd_config= has the new stock config,
-- =/etc/ssh/sshd_config.ucf-old= has the /previous/ *local* config
-- ~diff -u {/usr/shared/openssh,/etc/ssh}/sshd_config~ suggests that
-  the ✨magic merge✨ did TRT; the only differences are
-  - stuff I remember changing in (=PermitRootLogin=,
-    =PasswordAtuhentication=)
-  - a spurious whitespace-only hunk on =Subsystem sftp= (the
-    =/usr/share= version uses tabs; the =/etc= version ended up with a
-    single space)
-***** Removing obsolete stuff
-Erm, why does ~apt purge '~c'~ says
-#+begin_quote
-The following packages were automatically installed and are no longer required:
-[…] nginx-core nginx-full […]
-#+end_quote
-
-😨
-
-#+begin_src
-$ dpkg -S $(sudo which nginx)
-nginx: /usr/sbin/nginx
-$ apt depends nginx
-[…]
-  Replaces: nginx-core (<< 1.22.1-6~)
-  Replaces: nginx-extras (<< 1.22.1-6~)
-  Replaces: nginx-light (<< 1.22.1-6~)
-#+end_src
-
-Ah.
-****** Rsyslog
-Refuses to disappear.  The doc says ~apt-mark auto~ followed by ~apt
-autoremove~ should remove it, but that does not seem to be happening
-(~autoremove~ does not find anything to remove).  The =rsyslog=
-service is still up & running, and watches =syslog.socket= to
-re-activate itself 😕
-
-Decided to explicitly ~apt remove~ it on the advice of [[https://blog.frehi.be/2023/06/04/upgrading-from-debian-11-bullseye-to-debian-12-bookworm/][this gentleman]].
-**** Laptop
-***** non-free & non-free-firmware
-#+begin_quote
-Assuming the =non-free= component was only added to the APT
-sources-list to install firmware,
-#+end_quote
-#+begin_example
-$ apt list '?narrow(?installed, ?section(non-free))'
-Listing... Done
-doc-rfc-experimental/oldstable,oldstable,now 20201128-1 all [installed,automatic]
-doc-rfc-fyi-bcp/oldstable,oldstable,now 20201128-1 all [installed,automatic]
-doc-rfc-informational/oldstable,oldstable,now 20201128-1 all [installed,automatic]
-doc-rfc-misc/oldstable,oldstable,now 20201128-1 all [installed,automatic]
-doc-rfc-old-std/oldstable,oldstable,now 20201128-1 all [installed,automatic]
-doc-rfc-others/oldstable,oldstable,now 20201128-1 all [installed,automatic]
-doc-rfc-std-proposed/oldstable,oldstable,now 20201128-1 all [installed,automatic]
-doc-rfc-std/oldstable,oldstable,now 20201128-1 all [installed,automatic]
-doc-rfc/oldstable,oldstable,now 20201128-1 all [installed]
-firmware-iwlwifi/oldstable,oldstable,now 20210315-3 all [installed]
-firmware-misc-nonfree/oldstable,oldstable,now 20210315-3 all [installed]
-gcc-10-doc/oldstable,oldstable,now 10.2.0-1 all [installed,automatic]
-gdb-doc/oldstable,oldstable,now 10.1-1 all [installed]
-make-doc/oldstable,oldstable,now 4.3-2 all [installed]
-manpages-posix-dev/oldstable,oldstable,now 2017a-2 all [installed]
-manpages-posix/oldstable,oldstable,now 2017a-2 all [installed]
-tar-doc/oldstable,oldstable,now 1.34-1 all [installed]
-#+end_example
-Will be keeping =non-free= in addition to =non-free-firmware= then 🫣
-***** Fallout
-****** GRUB
-#+begin_src sh
-sudo sed -i \
-     s/'^#GRUB_DISABLE_OS_PROBER=false'/'GRUB_DISABLE_OS_PROBER=false'/ \
-    /etc/default/grub
-sudo update-grub
-#+end_src
-
-****** PEP 668
-#+begin_src sh
-# Before upgrade: keep calm…
-pip uninstall $(pip freeze --user | cut -d= -f1)
-# After upgrade: … carry on.
-sudo apt install pipx
-pipx install yt-dlp
-#+end_src
-
-****** VLC
-+Seems fine?  No choppiness observed on a 2k@24FPS video from yt-dlp+
-
-Is choppy as all hell on /some/ videos, not sure which kind nor why;
-could not be bothered discerning the patterns.  Learned me an mpv for
-great good.
-***** Goodies
-- The [[#random-lag][random lag I had been observing since 5.8]] seems gone 🥳
-- =libtree-sitter-dev= is new enough for Emacs; can get rid of my
-  =/usr/local= version.
-** impromptu IBus
-Installing [[https://zoom.us/][Zoom]]'s Debian package somehow enabled IBus[fn:: AFAICT
-because ibus recommends im-config, and the latter autostarts the
-former by default], which unconditionally set my keyboard to English
-for some reason[fn:: Before properly running ~apt install
-./zoom_amd64.deb~, I had mistakenly run ~dpkg -i zoom_amd64.deb~,
-which failed because of missing dependencies.  Perhaps apt omitted
-some post-installation configuration hooks because the first dpkg run
-had left an error marker somewhere?].  Steps taken:
-
-1. Tweak IBus preferences, unset shortcuts (Emacs has a better
-   interface for searching/inserting Unicode characters), check "use
-   system defaults" for the keyboard layout.
-
-2. Go on a hunt for whoever spawns ibus-daemon(1); AFAICT it's
-   im-launch(1), which can be told not to use IBus through im-config
-   (which eventually just writes ~run_im none~ in =~/.xinputrc=).
-
-3. Eventually, maybe I should just uninstall im-config.
-** random lag
-*** DONE diagnosing
-Since… a few days? weeks? one month? everything randomly becomes
-"choppy":
-
-- typing (Emacs, Terminator, Firefox): I can type in a bunch of words,
-  sit back, wait a few seconds, then watch the words finally write
-  themselves letter by letter.
-- launching programs: ~while time $aprogram ; do sleep 0.5 ; done~,
-  where ~aprogram~ just starts then exits, shows wildly varying times.
-- scrolling a PDF with the touchpad (Evince): the pages stay stuck for
-  a few seconds, then the reader jumps to the new location; the mouse
-  pointer does change during this delay, as text and whitespace
-  (invisibly) scroll by.
-
-I can't remember changing anything recently, nor seeing any scary
-update passing by.  journalctl, htop and dmesg do not show any obvious
-suspects.  Some things I considered:
-
-- Disabling some services e.g. tor or speech-dispatcher ⇒ no effect.
-- Uninstalling xserver-xorg-video-intel ⇒ no effect.
-- Upgrading systemd from backports ⇒ no effect.
-- htop sometimes shows pulseaudio acting up despite no application
-  playing or recording sound?
-- Maybe I should try reinstalling Debian's stable kernel?
-  - Luckily 5.7 was not uninstalled when upgrading to 5.8; booting on
-    5.7 solves all of the "choppiness" issues listed above.
-
-Now to pinpoint what's wrong with 5.8…
-*** TODO fixing
-Found a way to "quantify" the problem; asked around on the
-debian-kernel mailing list, to no avail.
-
-- [[https://lists.debian.org/debian-kernel/2020/11/msg00084.html][2020-11]] - original report that 5.8 from backports triggers the
-  issue: "wait for 5.9 to be available from backports or even 5.10"
-  (LTS for the next Debian stable version)
-- [[https://lists.debian.org/debian-kernel/2020/12/msg00040.html][2020-12]] - quick report that 5.9 from backports does not improve
-  things: 🦗
-- [[https://lists.debian.org/debian-kernel/2021/02/msg00231.html][2021-02]] - quick report that 5.10 from backports does not improve
-  things *✨with scripts & numbers✨*: 🦗
-
-#+begin_quote
-    for ((i=0; i<100; i++)); do
-        time -p terminator -x 'bash -c exit'
-    done &> time-$(uname -r)
-
-    grep $mode time-$(uname -r) | sort -k2
-
-Where $mode is either real, user or sys.  Here are the extrema:
-
-                        real            user            sys
-                        min     max     min     max     min     max
-5.7                     0.44    0.48    0.29    0.35    0.02    0.08
-5.10                    0.47    3.30    0.31    2.87    0.02    0.30
-5.10-after-suspend      0.46    0.50    0.30    0.36    0.03    0.08
-
-Averages & standard deviations:
-
-                        real            user            sys
-5.7                     0.454±0.006     0.322±0.013     0.046±0.013
-5.10                    0.961±0.607     0.559±0.518     0.074±0.052
-5.10-after-suspend      0.469±0.005     0.332±0.012     0.050±0.011
-
-These results feel consistent with the stutter I observe: 5.7 and
-5.10-after-suspend have roughly the same performance, while
-freshly-booted 5.10 is overall very jittery: terminator startup is twice
-as slow on average, with 100× more variance.
-
-
-Some more stats, eyeballed from /proc/cpuinfo and
-/sys/devices/system/cpu/cpufreq/policy*/scaling_governor:
-
-                        idle frequency  CPU governor
-5.7                     <  800 MHz      powersave
-5.10                    > 1900 MHz      ondemand
-5.10 (after suspend)    <  900 MHz      ondemand
-#+end_quote
-
-- [[https://lists.debian.org/debian-kernel/2021/08/msg00278.html][2021-08]] - quick report that 5.10 from a fresh bullseye install does
-  not improve things: 🦗
-- 2023-08 - bookworm upgrade to 6.1: problem solved 🤷
-** samba server
-- I want most of my music on my laptop.
-- I want to access it from my desktop.
-- I want anyone on my home network to access it too.
-- I am too lazy to remove the Windows partition from my laptop, so
-  that partition sits mostly empty, eating 50% of the disk space.
-
-Therefore, the only sensible move is to run Samba on the laptop,
-serving a folder on my Linux partition with a symlink to the Windows
-partition.
-
-Chosen =/etc/smb.conf= excerpts:
-
-#+begin_src conf
-[global]
-allow insecure wide links = yes
-
-[sambo]
-comment = Files yours truly is sharing with you.
-path = /home/[…user…]/Public/smb
-browseable = yes
-read only = yes
-guest ok = yes
-wide links = yes
-#+end_src
-
-Then:
-
-#+begin_src sh
-# Mount Windows disk.
-udisksctl mount --block-device /dev/disk/by-label/OS
-# Symlink it from shared directory.
-ln -s /media/[…user…]/OS/Music ~/Public/smb/
-#+end_src
-
-On the desktop side:
-#+begin_src sh
-sudo mount.cifs //hirondell.local/sambo […somewhere…] \
-     -o guest,uid=$(id -u),gid=$(id -g)
-#+end_src
-* Someday
-** fix xfce4-terminal opening links with firefox-esr
-** fix Thunar opening images with Firefox instead of Ristretto
-** fix Ristretto thumbnails
-** Samsung NC10
-*** fix Ethernet after suspend
-Workaround:
-#+begin_src sh
-$ sudo modprobe -r sky2 && sudo modprobe -i sky2
-#+end_src
-References:
-- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1841304
-- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=895378
-- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1798921
-- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1809843
-- https://askubuntu.com/questions/1029620/ubuntu-18-04-lts-sky2-ethernet-stops-working-after-system-resume-from-suspend
-- https://bbs.archlinux.org/viewtopic.php?id=234725