Prusaslicer not showing Plater window after background update

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 update

In 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.