because of the high screen resolution and small monitor size - all the screen content seemed too small. I had to change the dpi value in the file /etc/X11/Xresources/x11-common (in TemplateVM whonix-ws-17). So, now all my AppVMs with whonix-ws-17 get a custom DPI value.
Could this negatively affect my anonymity? could apps or websites get my dpi information and identify my different virtual machines as the same person? Thanks