Linux: cannot open the file in File Manager

Problem

Actions "Help > Diagnostic Tools > Show log in File Manager" and context action "Open [file] in %File manager%" are missing in the menus

Cause

Mismatched configuration and system file manager settings or an undefined system file manager can cause this issue.

Resolution

Try running the following script

#!/bin/bash

# Test file manager detection in Ubuntu
echo "Testing file manager detection..."

# 1. Check XDG_DATA_HOME and XDG_DATA_DIRS
XDG_DATA_HOME=${XDG_DATA_HOME:-"$HOME/.local/share"}
XDG_DATA_DIRS=${XDG_DATA_DIRS:-"/usr/local/share:/usr/share"}
echo "XDG_DATA_HOME: $XDG_DATA_HOME"
echo "XDG_DATA_DIRS: $XDG_DATA_DIRS"

# 2. Get default file manager using xdg-mime
echo -n "Default file manager from xdg-mime: "
FM_DESKTOP=$(xdg-mime query default inode/directory)
echo "$FM_DESKTOP"

# 3. Search for .desktop file in XDG directories
IFS=":"
found=0
for dir in $XDG_DATA_HOME $XDG_DATA_DIRS; do
    desktop_path="$dir/applications/$FM_DESKTOP"
    if [ -f "$desktop_path" ]; then
        echo "Found .desktop file: $desktop_path"
        echo "Contents of .desktop file:"
        echo "------------------------"
        cat "$desktop_path"
        echo "------------------------"
        
        # Extract Exec and Name lines
        EXEC=$(grep "^Exec=" "$desktop_path" | cut -d'=' -f2-)
        NAME=$(grep "^Name=" "$desktop_path" | cut -d'=' -f2-)
        
        echo "Extracted Name: $NAME"
        echo "Extracted Exec: $EXEC"
        
        # Get the binary name (first part before space or % sign)
        BINARY=$(echo "$EXEC" | sed 's/ .*$//' | sed 's/%.*$//')
        echo "Binary name: $BINARY"
        
        # Check if binary exists in PATH
        if command -v "$BINARY" >/dev/null 2>&1; then
            echo "✓ Binary '$BINARY' found in PATH"
        else
            echo "✗ Binary '$BINARY' NOT found in PATH"
        fi
        
        found=1
        break
    fi
done

if [ $found -eq 0 ]; then
    echo "No .desktop file found for $FM_DESKTOP"
fi

# 4. Additional checks for common file managers
echo -e "\nChecking common file managers:"
for fm in nautilus dolphin nemo dde-file-manager thunar pcmanfm caja xdg-open; do
    if command -v "$fm" >/dev/null 2>&1; then
        echo "✓ $fm is installed"
    else
        echo "✗ $fm is not installed"
    fi
done

If checks your system file manager configuration in the exact same way as the IDE does and it will point to the root of this issue.