Diary on 2026-02-28

flameshot configuration in labwc

Under Wayland/labwc, the configuration UI for flameshot no longer includes manual screenshot shortcut settings. After some digging, I learned we can configure them directly in labwc by adding a keybind to the keyboard section of the labwc config file ~/.config/labwc/rc.xml.

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<keyboard>
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  ...
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  <!-- flameshot  -->
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  <keybind key="A-X">
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    <action name="Execute" command="flameshot gui"/>
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  </keybind>
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</keyboard>
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...
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</keyboard>

• default key mapping in labwc
  • W - window/super/logo
  • A - alt
  • C - ctrl
  • S - shift

And the grim option has been removed, so you need to configure it with portals.

• install portals

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  apt install xdg-desktop-portal xdg-desktop-portal-wlr xdg-desktop-portal-lxqt

• configure portals ~/.config/xdg-desktop-portal/labwc-portals.conf, here we use lxqt, if you use other desktop, you can use gtk xdg-desktop-portal-gtk

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  [preferred]
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  default=lxqt
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  org.freedesktop.impl.portal.Screencast=wlr
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  org.freedesktop.impl.portal.Screenshot=wlr

• restart portal service sh systemctl --user restart xdg-desktop-portal-wlr xdg-desktop-portal-lxqt xdg-desktop-portal
• make it autostart mkdir ~/.config/systemd/user/default.target.wants cd ~/.config/systemd/user/default.target.wants ln -s /usr/lib/systemd/user/xdg-desktop-portal.service . ln -s /usr/lib/systemd/user/xdg-desktop-portal-wlr.service . ln -s /usr/lib/systemd/user/xdg-desktop-portal-lxqt.service .

screen scale for labwc

previously i set the scale in lxqt env, this makes the app title bar overlapp with top panel, so i need to find a proper way to scale the screen, as it is 4k, font is too small

use randr is a better approach, just add the following line to ~/.config/labwc/autostart

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wlr-randr --output DP-2  --scale 1.3