Spurious error messages under ubuntu 20.04

[hannaybuchan]

Bug report

Bug summary

Code for reproduction

import matplotlib.pyplot as plt
x=[1,2]
plt.plot(x)
#

#

Invalid Context= "Legacy" line for icon theme: "/usr/share/icons/Adwaita/8x8/legacy/"
Invalid Context= "Legacy" line for icon theme: "/usr/share/icons/Adwaita/16x16/legacy/"
Invalid Context= "Legacy" line for icon theme: "/usr/share/icons/Adwaita/22x22/legacy/"
Invalid Context= "Legacy" line for icon theme: "/usr/share/icons/Adwaita/24x24/legacy/"
Invalid Context= "Legacy" line for icon theme: "/usr/share/icons/Adwaita/32x32/legacy/"
Invalid Context= "Legacy" line for icon theme: "/usr/share/icons/Adwaita/48x48/legacy/"
Invalid Context= "Legacy" line for icon theme: "/usr/share/icons/Adwaita/256x256/legacy/"
Invalid Context= "Legacy" line for icon theme: "/usr/share/icons/Adwaita/512x512/legacy/"
Invalid Context= "Legacy" line for icon theme: "/usr/share/icons/Adwaita/scalable/legacy/"
Invalid Context= "UI" line for icon theme: "/usr/share/icons/Adwaita/scalable/ui/"

# If applicable, paste the console output here
#
#

Expected outcome

Matplotlib version 3.2.1

• Operating system: lubuntu 20.04
• Matplotlib version:
• Matplotlib backend (print(matplotlib.get_backend())):
• Python version:3,8
• Jupyter version (if applicable):
• Other libraries:

[tacaswell]

Which backend are you using?

I suspect that this is an issue with an icon set that is being auto-discovered by the GUI framework on your system, I am not sure we can do thing about this on our side. It looks like Adwatia is a gnome theme and these files are owned by adwaita-icon-theme https://packages.ubuntu.com/focal/all/adwaita-icon-theme/filelist. Try removing that package or reporting this upstream.

[QuLogic]

Yea, this is a bug in the icon theme, there's nothing we can do about it, but you can try a different backend.

[hannaybuchan]

Backend is Qt5Agg,  Many thanks for the rapid response.  All the best,  -s

…

On 5/13/20 8:39 PM, Thomas A Caswell wrote: Which backend are you using? I suspect that this is an issue with an icon set that is being auto-discovered by the GUI framework on your system, I am not sure we can do thing about this on our side. It looks like Adwatia is a gnome theme and these files are owned by |adwaita-icon-theme| https://packages.ubuntu.com/focal/all/adwaita-icon-theme/filelist. Try removing that package or reporting this upstream. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#17406 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AD32UFCS7JD7UPIXWKRXUWDRRM4U5ANCNFSM4NADO7VA>.