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#1 2025-03-24 16:46:34

crvvv
Member
Registered: 2025-03-24
Posts: 1

Clipboard issues when running Plasma inside Sway

Hello folks, I have an unusual problem. I am running KDE Plasma 6.3.3 inside Sway, everything works surprisingly well except for the Clipboard (and Flameshot, but that's besides the point).
My problem is that sometimes when I copy text, the clipboard behavior is inconsistent. Newly copied text appears behind previously copied text in KDE's clipboard history instead of at the top as expected.

My Sway config looks like this:

# Default config for sway
#
# Copy this to ~/.config/sway/config and edit it to your liking.
#
# Read `man 5 sway` for a complete reference.



### Variables
#
# Logo key. Use Mod1 for Alt.
set $mod Mod4
# Home row direction keys, like vim
#set $left h
#set $down j
#set $up k
#set $right l
# Your preferred terminal emulator
set $term konsole
# Your preferred application launcher
#set $menu rofi -show drun --normal-window | xargs swaymsg exec --

set $menu rofi -show drun


set $browser zen-browser
set $filemanager dolphin

### Output configuration
#
# Default wallpaper (more resolutions are available in /usr/share/backgrounds/sway/)
output * bg /usr/share/backgrounds/sway/Sway_Wallpaper_Blue_1920x1080.png fill
#
# Example configuration:
#
#   output HDMI-A-1 resolution 1920x1080 position 1920,0
#
# You can get the names of your outputs by running: swaymsg -t get_outputs

### Idle configuration
#
# Example configuration:
#
# exec swayidle -w \
#          timeout 300 'swaylock -f -c 000000' \
#          timeout 600 'swaymsg "output * power off"' resume 'swaymsg "output * power on"' \
#          before-sleep 'swaylock -f -c 000000'
#
# This will lock your screen after 300 seconds of inactivity, then turn off
# your displays after another 300 seconds, and turn your screens back on when
# resumed. It will also lock your screen before your computer goes to sleep.

### Input configuration
#
# Example configuration:
#
#   input "2:14:SynPS/2_Synaptics_TouchPad" {
#       dwt enabled
#       tap enabled
#       natural_scroll enabled
#       middle_emulation enabled
#   }
#
# You can get the names of your inputs by running: swaymsg -t get_inputs
# Read `man 5 sway-input` for more information about this section.

### Key bindings
#
# Basics:
#
    # Start a terminal
    bindsym $mod+Return exec $term

    # Kill focused window
    bindsym $mod+q kill

    # Start your launcher
    bindsym $mod+d exec $menu

    bindsym $mod+m exec $filemanager
    bindsym $mod+b exec $browser

    bindsym Print+s exec DG_CURRENT_DESKTOP=sway flameshot gui
    bindsym Print+c exec flameshot gui --raw | wl-copy -f


    # Drag floating windows by holding down $mod and left mouse button.
    # Resize them with right mouse button + $mod.
    # Despite the name, also works for non-floating windows.
    # Change normal to inverse to use left mouse button for resizing and right
    # mouse button for dragging.
    floating_modifier $mod normal

    # Reload the configuration file
    bindsym $mod+Shift+c reload

    # Exit sway (logs you out of your Wayland session)
    bindsym $mod+Shift+e exec swaynag -t warning -m 'You pressed the exit shortcut. Do you really want to exit sway? This will end your Wayland session.' -B 'Yes, exit sway' 'swaymsg exit'
#
# Moving around:
#
    # Or use $mod+[up|down|left|right]
    bindsym $mod+Left focus left
    bindsym $mod+Down focus down
    bindsym $mod+Up focus up
    bindsym $mod+Right focus right

    # Move the focused window with the same, but add Shift
    bindsym $mod+Shift+Left move left
    bindsym $mod+Shift+Down move down
    bindsym $mod+Shift+Up move up
    bindsym $mod+Shift+Right move right
#
# Workspaces:
#
    # Switch to workspace
    bindsym $mod+1 workspace number 1
    bindsym $mod+2 workspace number 2
    bindsym $mod+3 workspace number 3
    bindsym $mod+4 workspace number 4
    bindsym $mod+5 workspace number 5
    bindsym $mod+6 workspace number 6
    bindsym $mod+7 workspace number 7
    bindsym $mod+8 workspace number 8
    bindsym $mod+9 workspace number 9
    bindsym $mod+0 workspace number 10
    # Move focused container to workspace
    bindsym $mod+Shift+1 move container to workspace number 1
    bindsym $mod+Shift+2 move container to workspace number 2
    bindsym $mod+Shift+3 move container to workspace number 3
    bindsym $mod+Shift+4 move container to workspace number 4
    bindsym $mod+Shift+5 move container to workspace number 5
    bindsym $mod+Shift+6 move container to workspace number 6
    bindsym $mod+Shift+7 move container to workspace number 7
    bindsym $mod+Shift+8 move container to workspace number 8
    bindsym $mod+Shift+9 move container to workspace number 9
    bindsym $mod+Shift+0 move container to workspace number 10
    # Note: workspaces can have any name you want, not just numbers.
    # We just use 1-10 as the default.
#
# Layout stuff:
#
    # You can "split" the current object of your focus with
    # $mod+b or $mod+v, for horizontal and vertical splits
    # respectively.
    bindsym $mod+h splith
    bindsym $mod+v splitv

    # Switch the current container between different layout styles
    bindsym $mod+s layout stacking
    bindsym $mod+w layout tabbed
    bindsym $mod+e layout toggle split

    # Make the current focus fullscreen
    bindsym $mod+f fullscreen

    # Toggle the current focus between tiling and floating mode
    bindsym $mod+Shift+space floating toggle

    # Swap focus between the tiling area and the floating area
    bindsym $mod+space focus mode_toggle

    # Move focus to the parent container
    bindsym $mod+a focus parent

    bindsym $mod+t exec /home/crv2/.config/sway/autotiling-toggle.sh

#
# Scratchpad:
#
    # Sway has a "scratchpad", which is a bag of holding for windows.
    # You can send windows there and get them back later.

    # Move the currently focused window to the scratchpad
    bindsym $mod+Shift+minus move scratchpad

    # Show the next scratchpad window or hide the focused scratchpad window.
    # If there are multiple scratchpad windows, this command cycles through them.
    bindsym $mod+minus scratchpad show
#
# Resizing containers:
#
mode "resize" {
    # left will shrink the containers width
    # right will grow the containers width
    # up will shrink the containers height
    # down will grow the containers height

    # Ditto, with arrow keys
    bindsym Left resize shrink width 10px
    bindsym Down resize grow height 10px
    bindsym Up resize shrink height 10px
    bindsym Right resize grow width 10px

    # Return to default mode
    bindsym Return mode "default"
    bindsym Escape mode "default"
}
bindsym $mod+r mode "resize"
#
# Utilities:
#
    # Special keys to adjust volume via PulseAudio
    bindsym --locked XF86AudioMute exec pactl set-sink-mute \@DEFAULT_SINK@ toggle
    bindsym --locked XF86AudioLowerVolume exec pactl set-sink-volume \@DEFAULT_SINK@ -5%
    bindsym --locked XF86AudioRaiseVolume exec pactl set-sink-volume \@DEFAULT_SINK@ +5%
    bindsym --locked XF86AudioMicMute exec pactl set-source-mute \@DEFAULT_SOURCE@ toggle
    # Special keys to adjust brightness via brightnessctl
    bindsym --locked XF86MonBrightnessDown exec brightnessctl set 5%-
    bindsym --locked XF86MonBrightnessUp exec brightnessctl set 5%+
    # Special key to take a screenshot with grim
    #bindsym Print exec grim

#
# Status Bar:
#
# Read `man 5 sway-bar` for more information about this section.
#bar {
#    position top
#
#    # When the status_command prints a new line to stdout, swaybar updates.
#    # The default just shows the current date and time.
#    status_command while date +'%Y-%m-%d %X'; do sleep 1; done
#
#    colors {
#        statusline #ffffff
#        background #323232
#        inactive_workspace #32323200 #32323200 #5c5c5c
#    }
#}

blur enable
blur_radius 3
blur_passes 3
gaps inner 8
gaps bottom 40
default_border pixel 5
shadows enable
corner_radius 10
font pango:JetBrainsMono Regular 11

smart_borders on
smart_gaps off
default_border pixel 2

#colors !
client.focused          #333845   #333845   #ffffff   #2e9ef4   #8fbcbb
client.focused_inactive #333333   #5f676a   #ffffff   #484e50   #5f676a
client.unfocused        #2f343a   #222222   #888888   #333845   #333845
client.urgent           #2f343a   #900000   #ffffff   #900000   #900000
client.placeholder      #000000   #0c0c0c   #ffffff   #000000   #333845
client.background       #ffffff

layer_effects "rofi" blur enable


exec_always  --no-startup-id kstart plasmashell
for_window [window_role="pop-up"] floating enable, border none
for_window [window_role="bubble"] floating enable, border none
for_window [window_role="dialog"] floating enable, border none
for_window [title="plasmashell"] floating enable, border none, border none, sticky enable, move position cursor, move up 42
for_window [window_type="dialog"] ffor_window [title="Extension*"] floating enable, border none
for_window [title="Extension*"] floating enable, border none, border none
exec_always --no-startup-id /usr/lib/polkit-kde-authentication-agent-1
exec_always --no-startup-id XDG_MENU_PREFIX=arch- kbuildsycoca6

exec_always --no-startup-id env XDG_CURRENT_DESKTOP=sway
#exec_always  --no-startup-id /usr/lib/xdg-desktop-portal -r
exec_always --no-startup-id /usr/lib/xdg-desktop-portal-kde


set $XDG_MENU_PREFIX arch-
exec systemctl --user import-environment XDG_MENU_PREFIX

include /etc/sway/config.d/*

I launch the session with SDDM with /usr/local/share/wayland-sessions/sway-nvidia.desktop which looks like this:

[Desktop Entry]
Name=Sway Plasma
Comment=An i3-compatible Wayland compositor with Plasma 6
Exec=env XDG_MENU_PREFIX=plasma- XDG_CURRENT_DESKTOP=sway QT_QPA_PLATFORMTHEME=kde QT_STYLE_OVERRIDE=kvantum sway --unsupported-gpu
Type=Application

I tried clipboard-sync, which introduced different problems (like copy pasting files not working, xwayland inserting randomly empty entries into the clipboard, etc)

Or configuring the Clipboard inside KDE, if I tick "Keep the selection and clipboard the same" and "Only when explicitly copied" it fixes the order issue, but introduces pasting errors, when I try to paste text over other text it just pastes the text that I am trying to remove.

Currently I work around the issue by spamming ctrl+c to make sure what I want to copy appears in the right position, but this is not a long term solution.

I also would prefer to keep the KDE Plasma and Sway set up, it is working as expected (or better, based on your expectations).

      /\          ██ CPU: Ryzen 7 5800X (16) 
     /  \         ██ GPU: GeForce RTX 3090 
    /\   \        ██ Distro: Arch Linux 
   /      \       ██ Kernel: 6.13.8-zen1-1-zen 
  /   ,,   \      ██ WM: sway 
 /   |  |  -\     ██ Shell: fish 4.0.1 
/_-''    ''-_\    ██ Packages: 908 (pacman) 

EDIT: I forgot to mention it, but I am using swayfx

Last edited by crvvv (2025-03-24 16:59:02)

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