EDHM+UI is a tool that lets you change the colors and lighting of the HUD in Elite: Dangerous. Does it work on Linux? Yes!

tl;dr: Install EDHM+UI in its own WINE prefix, then point it at your E:D install.

Long version:

1. Download the EDHM+UI installer (EDHM_UI_Setup.msi) from GitHub.
2. Choose a name for a new WINE prefix: export WINEPREFIX="$HOME/.wine_edhmui"
3. Initialize the prefix with: wine wineboot
4. Install .NET to the prefix: winetricks dotnet48. This will take you through a couple installers. Just continue through any warnings the installers show.
5. Make sure the Windows version is set to one supported by EDHM+UI: winetricks win10
6. Install EDHM+UI to the prefix (replace with the path to the .msi if it is not in the current folder): wine msiexec /i ./EDHM_UI_Setup.msi
7. (Optional) Download an icon for a shortcut: wget https://bluemystical.github.io/edhm-api/assets/img/logo.png -O "${WINEPREFIX}/logo.png"
8. Set up a .desktop file to put EDHM in your menu. Create ~/.local/share/applications/edhm-ui.desktop with a text editor and put the following in. Replace NAME with your username.

[Desktop Entry]
Name=EDHM UI
Comment=E:D HUD Mod UI
Exec=env WINEDEBUG="-all" WINEPREFIX="/home/NAME/.wine_edhmui" "/home/NAME/.wine_edhmui/drive_c/users/NAME/AppData/Local/EDHM_UI/EDHM_UI_mk2.exe"
Icon=/home/NAME/.wine_edhmui/logo.png
Terminal=false
Type=Application
Categories=Game

8. Start EDHM+UI. Point it at your Elite Dangerous install(s). In the following picture it references my Steam install. You can likely find your install with: find ~ -name elite-dangerous-odyssey-64, but be sure to use the Windows-style path like I do, usually under Z:\. To make the box editable/browsable, CTRL+LEFT-CLICK the pi (π) symbol first.
9. You can then use EDHM+UI like on Windows. Select a premade theme, tweak it, add third-party plugins, and apply it. And just like Windows, you can use a hotkey (F11 by default) to reload a changed theme while the game is running.

Note: I was getting frequent crashes from EDHM UI, but I was still able to apply a theme and add a third-party plugin.

References:

1. EDHM+UI Discord MrVaad
2. EDHM+UI Discord Thorned Rose
3. GitHub issue

Tested versions:

• Arch Linux as of 2024-02-19
• wine 9.2-1
• winetricks 20240105-1
• EDHM+UI v2.2.19

The following steps make a couple assumptions:

0. You are running Linux and using systemd
1. The ludusavi command is available at /usr/bin/ludusavi, which it is at least for the Arch Linux AUR package. You may need to adjust it when using another distribution or package.
2. The timer is set to run daily, or 5-10 minutes after boot. You can adjust it if you want.

Steps

1. Set Ludusavi up in the GUI as you wish. Test with the Preview and Back Up buttons. 2. Create a service with systemctl edit --user --force --full ludusavi-backup.service and put the following text in it:

[Unit]
Description=Back up game saves
After=network.target

[Service]
Type=oneshot
ExecStart=/usr/bin/ludusavi backup --force

[Install]
WantedBy=default.target

3. Create a timer with systemctl edit --user --force --full ludusavi-backup.timer and put the following text in it:

[Unit]
Description=Back up game saves
RefuseManualStart=no
RefuseManualStop=no

[Timer]
OnCalendar=daily
RandomizedDelaySec=5min
OnBootSec=5min

[Install]
WantedBy=timers.target

4. Enable the timer and run the backup with: systemctl --user enable --now ludusavi-backup.timer

Other Commands

• List timers: systemctl --user list-timers --all
• Run a backup manually: systemctl --user start ludusavi-backup.service
• Check logs: journalctl --user -u ludusavi-backup.service

Solution

The solution I came up with is, instead of using the Tailscale-provided polkit configuration, create /etc/polkit-1/rules.d/99-tailscaled-dns.rules with the following content:

polkit.addRule(function(action, subject) {
    if (action.id.startsWith("org.freedesktop.resolve1.") &&
        subject.user == "tailscaled")
    {
        return polkit.Result.YES;
    }
});

Then restart it with sudo systemctl restart polkit.service .

I have filed #9344 and hope the official documentation will be updated soon, as Ubuntu 23.10 and later have finally updated polkitd.