Add Bambu Studio Flatpak NVIDIA fix, update driver version

cachy-overview.md

@@ -1,6 +1,6 @@
 # Main Desktop — CachyOS Overview
 
-> Last updated: 2026-06-11
+> Last updated: 2026-07-11
 
 ---
 
@@ -49,7 +49,7 @@
 |---|---|
 | **Model** | NVIDIA GeForce RTX 4060 Ti |
 | **VRAM** | 8 GB |
-| **Driver** | nvidia 610.43.02 |
+| **Driver** | nvidia 610.43.03 |
 | **Architecture** | Lovelace (AD106, TSMC 5nm) |
 | **APIs** | OpenGL 4.6, Vulkan 1.4.350, EGL 1.5 |
 | **PCIe** | Gen 4 x8 |
@@ -119,6 +119,7 @@
 | **Media** | VLC, Haruna, Jellyfin (server on homelab) |
 | **Graphics** | GIMP 3.2, Krita 6.0, Inkscape 1.4 |
 | **3D / CAD** | Blender 5.1, FreeCAD 1.1 |
+| **3D Printing** | Bambu Studio (Flatpak, `com.bambulab.BambuStudio`) |
 | **Video Editing** | Kdenlive 26.04 |
 | **Screen Recording** | OBS Studio 32.1 |
 | **Notes** | Obsidian 1.12 |
@@ -208,3 +209,36 @@ xkb_symbols "sk_custom" {
 - `include "sk"` causes infinite recursion when the file is named `sk` — use `include "sk(basic)"` instead
 - KDE reads `~/.config/xkb/`, not `~/.xkb/`
 - keyd was tested but doesn't work cleanly with non-US layouts on Wayland without switching the display server to US layout
+
+---
+
+## Troubleshooting
+
+### Bambu Studio (Flatpak) — model/build plate not rendering after NVIDIA driver update
+
+**Symptom:** Bambu Studio opens fine but the build plate and any loaded model are invisible/blank. Happened twice — once tied to a broken Flatpak install requiring a full reinstall, and again purely from a driver version mismatch.
+
+**Root cause (recurring pattern):** The Flatpak runtime bundles its own NVIDIA GL extension (`org.freedesktop.Platform.GL.nvidia-XXX`), which must exactly match the host NVIDIA driver version (down to the patch digit). CachyOS is rolling-release, so `nvidia-smi` driver version drifts ahead of the installed Flatpak extension after routine system updates — this silently breaks EGL/DRI2 initialization (`failed to create dri2 screen`, `driver (null)` in logs), even though nothing about Bambu Studio itself changed.
+
+**Diagnosis:**
+```bash
+# Host driver version
+nvidia-smi --query-gpu=driver_version --format=csv,noheader
+
+# Installed Flatpak NVIDIA GL extension
+flatpak list | grep nvidia
+```
+If these two versions don't match exactly (e.g. host `610.43.03` vs Flatpak extension `610-43-02`), that's the cause.
+
+**Fix:**
+```bash
+flatpak install org.freedesktop.Platform.GL.nvidia-<matching-version>
+```
+Then fully quit and relaunch Bambu Studio (a reboot isn't required, but doesn't hurt).
+
+**If Flathub hasn't published the matching extension version yet:** switch off Flatpak entirely and use the AUR binary instead, which uses the host driver directly and avoids this whole class of bug on future driver updates:
+```bash
+paru -S bambu-studio-bin
+```
+
+**Confirmed fix applied:** 2026-07-11, installing the matching `org.freedesktop.Platform.GL.nvidia-610-43-03` extension resolved it.