display physical dimensions (& DPI) inaccurate (as reported by xdyinfo from macports)
Submitted by sto
Assigned to Jeremy Huddleston Sequoia
XQuartz 2.7.11 on macOS Sierra 10.12.6, using 27-inch Apple LED Cinema display, with resolution set to 2048x1152.
using a browser I visit https://www.sven.de/dpi/ and enter diagonal=27 to get reasonable physical dimensions of the screen:
23.53" x 13.24" = 311.5in^2 (59.77cm x 33.62cm = 2009.68cm^2) at 87.03 PPI, 0.2919mm dot pitch, 7574 PPI^2
But using xdpyinfo (from macports) it reports:
dimensions: 2048x1152 pixels (541x303 millimeters) resolution: 96x97 dots per inch
The pixels are correct, but the millimeters are too small: so DPI is too high. The millimeters should be: 598x336.
Version: 2.7.11 (xserver-1.18.4)