If you’re like me you woke up today with Prusaslicer having done an update in the background with Ubuntu’s Flatpak update mechanism hiding somewhere, and your Plater window showing nothing (just a blank area where the 3D field should be).
It took a bit of head scratching, but I realised that Flatpak has its own video drivers for Flatpak software, and these hadn’t been updated.
The fix was simple. Simply type:
flatpak updateIn a terminal, and you’ll see something like:
Looking for updates…
ID Branch Op Remote Download
1. [ ] org.freedesktop.Platform.GL.default 24.08 i flathub 1.0 kB / 145.4 MB
2. [ ] org.freedesktop.Platform.GL.default 24.08extra i flathub 1.0 kB / 145.4 MB
3. [ ] org.freedesktop.Platform.VAAPI.Intel 24.08 i flathub 1.0 kB / 15.0 MB
4. [ ] org.freedesktop.Platform.openh264 2.5.1 i flathub 620.2 kB / 971.4 kB
5. [ ] org.gnome.Platform.Locale 48 i flathub 1.0 kB / 394.5 MB
To which you press “y” to accept the updates. Bingo you should be back up and running.