[Development] Qt 6 not seeing the same DPI as Qt 5

[Tor Arne Vestbø]

On 29 Nov 2021, at 23:43, Thiago Macieira <thiago.macieira at intel.com<mailto:thiago.macieira at intel.com>> wrote:

On Monday, 29 November 2021 13:20:58 PST Tor Arne Vestbø wrote:
If you know that the physical DPI being reported is correct you can use
QT_USE_PHYSICAL_DPI to override the behavior as documented.

I did, but that makes no difference:

$ QT_USE_PHYSICAL_DPI=1 ~/obj/qt/installed/bin/qtdiag | grep DPI
 QT_USE_PHYSICAL_DPI="1"
Screens: 2, High DPI scaling: active
 Physical DPI: 120.118,120 Logical DPI: 96,96 Subpixel_None
 High DPI scaling factor: 2 DevicePixelRatio: 2
 Physical DPI: 120.118,120 Logical DPI: 96,96 Subpixel_None
 High DPI scaling factor: 2 DevicePixelRatio: 2

The priority matters, so perhaps you have set one of the other things we might pick up? Xft/DPI or Xft.dpi?

https://doc-snapshots.qt.io/qt6-dev/highdpi.html#configuring-x11

Cheers,
Tor Arne

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