gentoo with xfce4: krusader does not start from distrobox

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10:26:41.584-warning qt.qpa.xcb unknown@0 # could not connect to display :0.0 10:26:41.584-warning qt.qpa.plugin unknown@0 # From 6.5.0, xcb-cursor0 or libxcb-cursor0 is needed to load the Qt xcb platform plugin. 10:26:41.584-info qt.qpa.plugin unknown@0 # Could not load the Qt platform plugin "xcb" in "" even though it was found. 10:26:41.584-fatal default unknown@0 # This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

Available platform plugins are: linuxfb, wayland-brcm, wayland-egl, wayland, vkkhrdisplay, vnc, offscreen, xcb, minimalegl, eglfs, minimal.
install xhost in gentoo host: sudo emerge x11-apps/xhost
and allow access to display: xhost +
now can enter the fedora distrobox

gentoo and lightdm: mouse freezes/inactive in lightdm greeter

Sometimes, when PC starts, mouse will be inactive in lightdm greeter (only keyboard will work). You can try disabling mouse suspend:

sudo vim /etc/modules-load.d/disable-usb-autosuspend.conf and add options usbcore autosuspend=-1 then rebuild initramfs (if drakut) sudo dracut --force

bedrock with hijacked gentoo and xfce4: missing icons from strata in xfce4 application menu

sudo touch /usr/share/icons/hicolor
sudo gtk-update-icon-cache
based on: https://old.reddit.com/r/bedrocklinux/comments/llt5pp/buggy_icons_from_other_stratums_in_gnome/gnuo7tv/

gentoo and libvirt: Unable to find a satisfying virtiofsd

emerge --ask app-emulation/virtiofsd

tigervnc with fluxbox example setup

/etc/tigervnc/vncserver-config-mandatory session=startfluxbox
securitytypes=none
geometry=2000x1200
localhost
alwaysshared


Gentoo install app-arch/ rar - license

To avoid license inssues in future, you can just accept all licenses in /etc/portage/make.conf: ACCEPT_LICENSE="*"

gentoo: list recently updated packages

Emerge genlop if needed, and then: sudo genlop -u

distrobox: create archlinux container with automatic yay installation

distrobox create -i archlinux -n abox -H ~/home-abox && distrobox enter abox -- bash -c "sudo pacman -Sy --noconfirm git base-devel && git clone https://aur.archlinux.org/yay-bin.git /tmp/yay-bin && cd /tmp/yay-bin && makepkg -si --noconfirm && rm -rf /tmp/yay-bin"

distrobox: start krusader with dark them from host

/run/current-system/sw/bin/distrobox-enter -n abox -- bash -c 'env GTK_THEME=Adwaita:dark ICON_THEME=Papirus QT_QPA_PLATFORMTHEME=qt6ct krusader -qwindowtitle %c %u'

Fixing KDE App Theming in Distrobox on XFCE

If you run a KDE application (like Krusader) inside a Distrobox container on an XFCE host with a dark theme, you might notice that the icons are dark and nearly invisible against the dark background. This happens because the app inherits a mismatched icon theme from the host, and no Qt platform theme manager is configured inside the container.

The Fix

First, enter your container and install the required packages:

distrobox enter abox
sudo pacman -S papirus-icon-theme qt6ct


Note: check whether your KDE app links against Qt5 or Qt6 before choosing between qt5ct and qt6ct:

ldd $(which krusader) | grep -i qt


Next, tell Qt to use qt6ct as the platform theme. In fish shell, set it as a universal variable so it persists across sessions:

set -Ux QT_QPA_PLATFORMTHEME qt6ct


Then configure the theme and icons by editing the qt6ct config directly:

mkdir -p ~/.config/qt6ct
cat > ~/.config/qt6ct/qt6ct.conf << 'EOF'
[Appearance]
icon_theme=Papirus-Dark
style=Breeze
EOF


Finally, set up kdeglobals so KDE apps pick up the correct color scheme and icon theme:

cat > ~/.config/kdeglobals << 'EOF'
[General]
ColorScheme=BreezeDark

[KDE]
widgetStyle=Breeze

[Icons]
Theme=Papirus-Dark
EOF


Open a fresh container session and launch your KDE app — the icons and theme should now render correctly.