**System Information**
Operating system: Ubuntu 18.04
Graphics card: Nvidia 780
**Blender Version**
Broken: 2.80
(example: 2.79b release)
(example: 2.80, edbf15d3c044, blender2.8, 2018-11-28, as found on the splash screen)
Worked: (optional)
**Error Message after switching to texture paint**
Unfortunately the message cannot be copied.
Toolbox is not shown (Paint) at the left, instead a message.
**Exact steps for others to reproduce the error**
Based on the default startup or an attached .blend file (as simple as possible).