Hi All,
I'm jumping in this thread because I think this 'bug' is the source of
many scaling issues.
I'm the owner of a 13" laptop with a 3200x1800 native resolution. As
recommended elsewhere, I set the scale factor to 2 and most applications
are readable now. However, readable is does not mean correct.
Using 3 different tools, I get 3 different DPI. See below:
>get-edid | parse-edid
Section "Monitor"
Identifier ""
ModelName ""
VendorName "SDC"
# Monitor Manufactured week 0 of 2014
# EDID version 1.3
# Digital Display
DisplaySize 290 170
Gamma 2.20
Option "DPMS" "true"
Modeline "Mode 0" 361.31 3200 3248 3280 3316 1800 1802 1807 1816
-hsync -vsync
Modeline "Mode 1" 361.31 3200 3248 3280 3680 1800 1802 1807 2045
-hsync -vsync
EndSection
=> The above info results in about 280 DPI.
>xrdb -query | grep dpi
Xft.dpi: 192
>xdpyinfo | grep -B2 resolution
screen #0:
dimensions: 3200x1800 pixels (846x476 millimeters)
resolution: 96x96 dots per inch
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https://bugs.launchpad.net/bugs/589485
Title:
Ignores physical display size and calculates based on 96DPI
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