Le 10/10/2018 à 20:43, Sven Joachim a écrit : > Try killing xfsettingsd, that helps according to > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=909818#15.
Thanks! I can confirm killing xfsettingsd fixes the issue (but Xfce is not really usable after that). I have launch again xfsettings with the debug option and use firefox, I have the following messages related to fontconfig. $ XFSETTINGSD_DEBUG=1 xfsettingsd --replace --no-daemon xfce4-settings(fontconfig): monitoring 131 paths xfce4-settings(workspaces): 4 desktop names set from xfconf xfce4-settings(fontconfig): timestamp updated (time=1539336916) xfce4-settings(xsettings): 33 settings changed (serial=1, len=1252) xfce4-settings(fontconfig): monitoring 131 paths xfce4-settings(fontconfig): timestamp updated (time=1539336919) xfce4-settings(xsettings): 33 settings changed (serial=2, len=1252) xfce4-settings(fontconfig): monitoring 131 paths Fontconfig warning: Directory/file mtime in the future. New fonts may not be detected. xfce4-settings(fontconfig): timestamp updated (time=1539336922) xfce4-settings(xsettings): 33 settings changed (serial=3, len=1252) xfce4-settings(fontconfig): monitoring 131 paths Fontconfig warning: Directory/file mtime in the future. New fonts may not be detected. xfce4-settings(fontconfig): timestamp updated (time=1539336925) xfce4-settings(xsettings): 33 settings changed (serial=4, len=1252) xfce4-settings(fontconfig): monitoring 131 paths xfce4-settings(fontconfig): timestamp updated (time=1539336928) xfce4-settings(xsettings): 33 settings changed (serial=5, len=1252) xfce4-settings(fontconfig): monitoring 131 paths xfce4-settings(fontconfig): timestamp updated (time=1539336931) xfce4-settings(xsettings): 33 settings changed (serial=6, len=1252) xfce4-settings(fontconfig): monitoring 131 paths xfce4-settings(fontconfig): timestamp updated (time=1539336934) xfce4-settings(xsettings): 33 settings changed (serial=7, len=1252) xfce4-settings(fontconfig): monitoring 131 paths xfce4-settings(fontconfig): timestamp updated (time=1539336937) xfce4-settings(xsettings): 33 settings changed (serial=8, len=1252) xfce4-settings(fontconfig): monitoring 131 paths