Created attachment 32451 [details]
Upgrading to xorg-server 1.7 caused my intel driver to report the incorrect
screen size of 444 x 277 millimetres (96 x 96 DPI), as shown from the log
(II) intel(0): Using exact sizes for initial modes
(II) intel(0): Output LVDS1 using initial mode 1680x1050
(II) intel(0): Using default gamma of (1.0, 1.0, 1.0) unless otherwise stated.
(==) intel(0): DPI set to (96, 96)
(II) intel(0): Setting screen physical size to 444 x 277
However, xrandr reports the correct screen size of 331mm x 207mm, and running
xrandr --fbmm 331x207 results in the corect DPI (129x129) being configured.
The problem is reproducible on all my machines, two with intel and one with radeon -- they all get set to the incorrect DPI of 96x96. xorg-server 1.6 does not exhibit the issue.
*** This bug has been marked as a duplicate of bug 23705 ***