>>>> Is there a way to digitally discover the true height and width of your >>>> screen in mm? >>> >>> >>> Yes. xdpyinfo shows the information: >>> >>> xdpyinfo | grep -B2 resolution >>> >>> If the information is wrong, that usually means one of two things >>> (sometimes >>> even both): a) the video driver is reporting the wrong size to Xorg, >>> and/or >>> b) the screen is reporting the wrong size to the driver. >> >> >> I'm getting strange results from xdpyinfo. I always get 96x96 DPI and >> the screen size changes along with the resolution. When I run 'xrandr >> --dpi 200x200' and check xdpyinfo, it reports correctly. But if I log >> out and back in to xfce4 without doing anything else, it gives me >> 96x96 again. > > > XFCE is probably forcing 96DPI by default. This is usually done by desktop > environments that don't support DPI scaling very well. I just found this > (sort of flame-war-ish) thread: > > https://forum.xfce.org/viewtopic.php?id=7734 > > and indeed XFCE doesn't seem to have very good support for this. Maybe you > can find some of the settings listed there useful though. > > Other than that, if you want working DPI scaling, you'll have much better > luck with KDE 5 / Plasma.
Won't I freak out if I'm an xfce4 guy and I try to switch to KDE? Is there a better choice for HiDPI migration for people who like xfce4? - Grant
