lxqt-config-notificationd: set Qt::AA_UseHighDpiPixmaps to true
lxqt-config-notificationd: set Qt::AA_UseHighDpiPixmaps to true

lxde/lxqt-notificationd,stefonarch/lxqt-notificationd,stefonarch/lxqt-notificationd,lxde/lxqt-notificationd