A temporary workaround for KDE seems to be setting user fonts to "rgb true hintslight true" (->~/.fonts.conf) and "Ubuntu medium 9", from Kubuntu systemsettings.
I'm really not technically involved, so I damn do not know why, but it works. Ubuntu medium font is well displayed in plasma workspace (quite bold) and in firefox (not bold).
Hi again,
A temporary workaround for KDE seems to be setting user fonts to "rgb true hintslight true" (->~/.fonts.conf) and "Ubuntu medium 9", from Kubuntu systemsettings.
I'm really not technically involved, so I damn do not know why, but it works. Ubuntu medium font is well displayed in plasma workspace (quite bold) and in firefox (not bold).