Qt5 backend gives missing icon errors on KDE Neon #8590
Description
Bug report
Bug summary
Using Qt5Agg backend produces missing icon errors on KDE Neon
Code for reproduction
Any code
import matplotlib.pyplot as plt
plt.plot([1, 2, 3])
plt.show()
Actual outcome
Invalid Context= "stock" line for icon theme: "/usr/share/icons/ubuntu-mono-dark/stock/16/"
Invalid Context= "stock" line for icon theme: "/usr/share/icons/ubuntu-mono-dark/stock/22/"
Invalid Context= "stock" line for icon theme: "/usr/share/icons/ubuntu-mono-dark/stock/24/"
Invalid Context= "stock" line for icon theme: "/usr/share/icons/ubuntu-mono-dark/stock/32/"
Invalid Context= "stock" line for icon theme: "/usr/share/icons/ubuntu-mono-dark/stock/48/"
Invalid Context= "stock" line for icon theme: "/usr/share/icons/ubuntu-mono-dark/stock/64/"
Invalid Context= "stock" line for icon theme: "/usr/share/icons/ubuntu-mono-dark/stock/128/"
Icon theme "Adwaita" not found.
Icon theme "Adwaita" not found.
Icon theme "Adwaita" not found.
Icon theme "Mint-X" not found.
Icon theme "elementary" not found.
Matplotlib version
- Operating System: KDE Neon 5.9
- Matplotlib Version: 2.0.1
- Python Version: 3.5
- Theme: Arc Dark KDE https://github.com/PapirusDevelopmentTeam/arc-kde
- Icon pack in use: Papyrus-Dark https://github.com/PapirusDevelopmentTeam/papirus-icon-theme
Everything installed with pip via Pycharm Community or apt
KDE Neon does not come with any of the expected icon packs. Installing one of them would likely resolve this issue
