I also tried linking in the icons from /usr/share/icons/Human/scalable/status/, including both notification-display-brightness and notification-keyboard-brightness, but nothing seems to work.
Changing the icon theme to Human however does allow brightness notifications to work, just as a sanity check.
I also tried linking in the icons from /usr/share/ icons/Human/ scalable/ status/ , including both notification- display- brightness and notification- keyboard- brightness, but nothing seems to work.
Changing the icon theme to Human however does allow brightness notifications to work, just as a sanity check.