I have upgraded from the trusty-proposed repository on a Thinkpad X250 and after testing it for a day, it seems to fix the problem for me. No font corruption anymore, even google maps seems to work.
Comment: Might be related or not, but yesterday after the upgrade the minimize/maximize/switch off buttons were gone in the non-maximized windows in the external monitor, today they are back. Go figure.
I have upgraded from the trusty-proposed repository on a Thinkpad X250 and after testing it for a day, it seems to fix the problem for me. No font corruption anymore, even google maps seems to work.
Comment: Might be related or not, but yesterday after the upgrade the minimize/ maximize/ switch off buttons were gone in the non-maximized windows in the external monitor, today they are back. Go figure.
Many thanks!