Remove obsolete audio and buzzer control documentation files, including detailed guides and HTML interfaces, to streamline the repository and eliminate redundancy. This cleanup enhances maintainability and focuses on essential resources for the reTerminal DM4 audio and buzzer functionalities.
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nearxos
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archive/chromium-setup-legacy/TOUCHSCREEN-DESKTOP-OPTIONS.md
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archive/chromium-setup-legacy/TOUCHSCREEN-DESKTOP-OPTIONS.md
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# Touchscreen-Friendly Desktop Environments for reTerminal DM4
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## Current Setup
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- **Screen**: 10-inch, 1280x800 resolution
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- **Current DE**: LXDE with Openbox
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- **Display Server**: Wayland (with Xwayland)
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## Recommended Desktop Environments
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### 1. KDE Plasma (Best for Touchscreen) ⭐ RECOMMENDED
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**Pros:**
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- Excellent touch support with large touch targets
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- Built-in on-screen keyboard (Maliit)
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- Gesture support
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- Scalable UI elements
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- Modern, polished interface
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- Good performance on Raspberry Pi 5
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**Installation:**
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```bash
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sudo apt-get update
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sudo apt-get install kde-plasma-desktop
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# Or for full KDE experience:
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sudo apt-get install kde-standard
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```
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**After installation:**
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```bash
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# Set KDE as default desktop
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sudo update-alternatives --config x-session-manager
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# Select KDE/Plasma option
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# Enable touchscreen optimizations
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# In System Settings > Workspace Behavior > Desktop Effects
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# Enable touch gestures and adjust touch settings
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```
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**Size**: ~500-800 MB
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---
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### 2. GNOME (Good Touch Support)
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**Pros:**
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- Excellent touch and gesture support
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- Large, finger-friendly interface
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- Built-in on-screen keyboard (Caribou)
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- Modern, tablet-like experience
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- Good Wayland support
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**Cons:**
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- More resource-intensive than LXDE
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- May be slower on older Pi models
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**Installation:**
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```bash
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sudo apt-get update
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sudo apt-get install gnome-core
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# Or full GNOME:
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sudo apt-get install gnome
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```
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**After installation:**
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```bash
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# Set GNOME as default
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sudo update-alternatives --config x-session-manager
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# Select GNOME option
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# Enable touch optimizations in GNOME Settings
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# Settings > Universal Access > Enable on-screen keyboard
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```
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**Size**: ~1-1.5 GB
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---
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### 3. XFCE with Touch Optimizations
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**Pros:**
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- Lightweight but more touch-friendly than LXDE
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- Customizable
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- Good performance
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- Can be configured for touch
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**Installation:**
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```bash
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sudo apt-get update
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sudo apt-get install xfce4 xfce4-goodies
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# Install on-screen keyboard
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sudo apt-get install onboard
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```
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**Touch optimizations:**
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```bash
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# Increase icon sizes, touch targets
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# Configure in Settings > Appearance > Icons (set to 48px or larger)
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# Settings > Panel > Increase panel size
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```
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**Size**: ~200-300 MB
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---
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### 4. Phosh (Mobile-First Desktop)
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**Pros:**
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- Designed specifically for touch devices
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- Very lightweight
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- Mobile/tablet interface
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- Built-in on-screen keyboard
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**Cons:**
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- Less mature on Raspberry Pi
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- May require more configuration
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**Installation:**
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```bash
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sudo apt-get update
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sudo apt-get install phosh phosh-tour
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```
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**Size**: ~100-200 MB
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---
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### 5. Lomiri (Ubuntu Touch Desktop)
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**Pros:**
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- Designed for touch from the ground up
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- Mobile-first interface
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- Gesture-based navigation
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**Cons:**
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- May not be in Debian repositories
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- Requires more setup
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**Installation:**
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```bash
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# May need to add Ubuntu Touch repositories
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# Check availability in Debian repos first
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```
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---
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## Comparison Table
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| Desktop Environment | Touch Support | Performance | Size | Ease of Setup |
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|---------------------|---------------|-------------|------|---------------|
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| **KDE Plasma** | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | Medium | Easy |
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| **GNOME** | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | Large | Easy |
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| **XFCE** | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Small | Easy |
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| **Phosh** | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Small | Medium |
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| **LXDE (Current)** | ⭐⭐ | ⭐⭐⭐⭐⭐ | Very Small | N/A |
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---
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## Recommended: KDE Plasma
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For a 10-inch touchscreen, **KDE Plasma** offers the best balance of:
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- Touch-friendliness
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- Performance
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- Features
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- Ease of use
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## Installation Steps for KDE Plasma
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1. **Install KDE Plasma:**
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```bash
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sudo apt-get update
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sudo apt-get install kde-plasma-desktop
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```
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2. **Install on-screen keyboard:**
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```bash
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sudo apt-get install maliit-keyboard
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```
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3. **Set as default desktop:**
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```bash
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sudo update-alternatives --config x-session-manager
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# Select: /usr/bin/startplasma-wayland or /usr/bin/startplasma-x11
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```
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4. **Configure touch settings:**
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- System Settings > Input Devices > Touchpad/Touchscreen
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- Adjust touch sensitivity and gestures
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- Enable tap-to-click
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5. **Enable on-screen keyboard:**
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- System Settings > Input Devices > Virtual Keyboard
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- Enable "Show on-screen keyboard when needed"
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6. **Adjust UI scaling:**
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- System Settings > Display and Monitor
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- Set scale to 125% or 150% for better touch targets
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7. **Reboot:**
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```bash
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sudo reboot
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```
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## Switching Back to LXDE
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If you want to switch back:
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```bash
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sudo update-alternatives --config x-session-manager
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# Select LXDE option
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```
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## Touchscreen Calibration (if needed)
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```bash
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# Install calibration tool
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sudo apt-get install xinput-calibrator
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# Run calibration
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xinput_calibrator
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# Follow on-screen instructions to calibrate touch points
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```
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## Additional Touch Optimizations
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### Increase Touch Targets
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Edit `~/.gtkrc-2.0` and `~/.config/gtk-3.0/gtk.css`:
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```css
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* {
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min-width: 44px;
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min-height: 44px;
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}
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```
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### Enable Touch Gestures
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- Install `libinput-gestures`:
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```bash
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sudo apt-get install libinput-gestures
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```
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### Font Scaling
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- Increase system font size in desktop settings
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- Recommended: 12-14pt for 10-inch screens
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## Notes
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- **Wayland vs X11**: KDE Plasma and GNOME work well with Wayland, which has better touch support
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- **Performance**: KDE Plasma is well-optimized for Raspberry Pi 5
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- **Chromium**: Your existing Chromium setup will work with any desktop environment
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- **Autostart**: Your autostart configuration will work with any DE
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## Resources
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- KDE Plasma: https://kde.org/plasma-desktop/
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- GNOME: https://www.gnome.org/
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- Phosh: https://source.puri.sm/Librem5/phosh
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