gentoo: Fixing Flameshot's Wrong-Monitor Bug on XFCE

If Flameshot's screenshot selector on Linux keeps popping up on the wrong monitor — even one that's turned off — check your primary display setting before anything else.

On my Gentoo + XFCE4 + X11 setup, Flameshot (Flatpak) kept opening its capture overlay on my second monitor, no matter what I did. Compositor tweaks, permissions, config resets — nothing worked.

The actual cause: my main monitor wasn't set as primary in XFCE's display settings. Flameshot just follows whatever XRandR reports as primary, regardless of which screen is actually active.

One change in Settings → Display, and it's been working perfectly since.

gnome-boxes from flatpak: file selection window does not show

I had that issue on gentoo running systemd with xfce4. Even though xdg-desktop-portal and xdg-desktop-portal-gtk portals were installed and running, gnome-boxes file selection window was not working. The solution was to set gtk portal by default:

create ~/.config/xdg-desktop-portal/portals.conf:

[preferred]
default=gtk
org.freedesktop.impl.portal.FileChooser=gtk


gentoo with systemd: simplescan from flatpak does not open Export save file window

Have to make sure that xdg-desktop-portal-gtk portal on gentoo is installed and running (run a regular user, not root): systemctl --user status xdg-desktop-portal-gtk.service If it is not running enable it: systemctl --user enable --now xdg-desktop-portal-gtk.service

flatpak: Kdenlive error: Could not initialize GLX

Could not initialize GLX Have to **update flatpak** as probably nvidia drivers in flatpaks are much different than on the host.

gentoo: distrobox-host-exec on gentoo host does not do notthing

Have to install flatpak on gentoo host:
sudo emerve -av flatpak


https://github.com/89luca89/distrobox/issues/1198#issuecomment-1951056599

Firefox open/save window does not show in flatpak

Make sure `xdg-desktop-portal-gtk` service is working and `xdg-desktop-portal-gtk` is disabled: https://reddit.com/r/flatpak/comments/z5nwhz/how_do_i_get_firefox_to_save_downloaded_files/ldwmadz/